Maryland Interactive Heat Zones Map
| Zone 1 < 1 days > 86°F | Zone 2 1 - 7 days > 86°F | Zone 3 8 - 14 days > 86°F | Zone 4 15 - 30 days > 86°F |
| Zone 5 31 - 45 days > 86°F | Zone 6 46 - 60 days > 86°F | Zone 7 61 - 90 days > 86°F |
To assist Maryland gardeners, Plantmaps has derived zones indicating the average number of days each year that an area experiences temperatures over 86 degrees F. These zones are derived from the historical climate data from the National Weather Service.
Heat Zone Maps for Neighboring States and Provinces
Related Maryland Maps:
Heat Zones for Cities and Towns in Maryland
| Location | Heat Zone |
|---|---|
| Abell | Heat Zone 6 46 - 60 days > 86°F |
| Aberdeen | Heat Zone 4 15 - 30 days > 86°F |
| Aberdeen Proving Ground | Heat Zone 4 15 - 30 days > 86°F |
| Abingdon | Heat Zone 4 15 - 30 days > 86°F |
| Accident | Heat Zone 1 < 1 days > 86°F |
| Accokeek | Heat Zone 5 31 - 45 days > 86°F |
| Adamstown | Heat Zone 5 31 - 45 days > 86°F |
| Adelphi | Heat Zone 6 46 - 60 days > 86°F |
| Algonquin | Heat Zone 6 46 - 60 days > 86°F |
| Allen | Heat Zone 4 15 - 30 days > 86°F |
| Andrews AFB | Heat Zone 5 31 - 45 days > 86°F |
| Annapolis | Heat Zone 6 46 - 60 days > 86°F |
| Annapolis Junction | Heat Zone 5 31 - 45 days > 86°F |
| Antietam | Heat Zone 4 15 - 30 days > 86°F |
| Aquasco | Heat Zone 4 15 - 30 days > 86°F |
| Arbutus | Heat Zone 5 31 - 45 days > 86°F |
| Arden on the Severn | Heat Zone 5 31 - 45 days > 86°F |
| Arnold | Heat Zone 6 46 - 60 days > 86°F |
| Ashton | Heat Zone 4 15 - 30 days > 86°F |
| Ashton-Sandy Spring | Heat Zone 4 15 - 30 days > 86°F |
| Aspen Hill | Heat Zone 4 15 - 30 days > 86°F |
| Assateague Island Natl Seashore | Heat Zone 2 1 - 7 days > 86°F |
| Avenue | Heat Zone 6 46 - 60 days > 86°F |
| Baden | Heat Zone 4 15 - 30 days > 86°F |
| Bagtown | Heat Zone 4 15 - 30 days > 86°F |
| Bakersville | Heat Zone 4 15 - 30 days > 86°F |
| Baldwin | Heat Zone 4 15 - 30 days > 86°F |
| Ballenger Creek | Heat Zone 6 46 - 60 days > 86°F |
| Baltimore | Heat Zone 5 31 - 45 days > 86°F |
| Baltimore Highlands | Heat Zone 5 31 - 45 days > 86°F |
| Baltimore/BWI Arpt | Heat Zone 5 31 - 45 days > 86°F |
| Baltimore/Inner Harbor | Heat Zone 5 31 - 45 days > 86°F |
| Baltimore/Martin Arpt | Heat Zone 4 15 - 30 days > 86°F |
| Barclay | Heat Zone 4 15 - 30 days > 86°F |
| Barnesville | Heat Zone 3 8 - 14 days > 86°F |
| Barrelville | Heat Zone 4 15 - 30 days > 86°F |
| Barstow | Heat Zone 4 15 - 30 days > 86°F |
| Barton | Heat Zone 2 1 - 7 days > 86°F |
| Bartonsville | Heat Zone 5 31 - 45 days > 86°F |
| Beallsville | Heat Zone 4 15 - 30 days > 86°F |
| Beaver Creek | Heat Zone 4 15 - 30 days > 86°F |
| Bel Air | Heat Zone 4 15 - 30 days > 86°F |
| Bel Air North | Heat Zone 4 15 - 30 days > 86°F |
| Bel Air South | Heat Zone 4 15 - 30 days > 86°F |
| Bel Alton | Heat Zone 4 15 - 30 days > 86°F |
| Belcamp | Heat Zone 4 15 - 30 days > 86°F |
| Beltsville | Heat Zone 5 31 - 45 days > 86°F |
| Benedict | Heat Zone 4 15 - 30 days > 86°F |
| Bennsville | Heat Zone 4 15 - 30 days > 86°F |
| Benson | Heat Zone 4 15 - 30 days > 86°F |
| Berlin | Heat Zone 3 8 - 14 days > 86°F |
| Berwyn Heights | Heat Zone 5 31 - 45 days > 86°F |
| Bethesda | Heat Zone 6 46 - 60 days > 86°F |
| Bethlehem | Heat Zone 6 46 - 60 days > 86°F |
| Betterton | Heat Zone 4 15 - 30 days > 86°F |
| Bier | Heat Zone 4 15 - 30 days > 86°F |
| Big Pool | Heat Zone 4 15 - 30 days > 86°F |
| Big Spring | Heat Zone 4 15 - 30 days > 86°F |
| Bishopville | Heat Zone 4 15 - 30 days > 86°F |
| Bittinger | Heat Zone 1 < 1 days > 86°F |
| Bivalve | Heat Zone 5 31 - 45 days > 86°F |
| Bladensburg | Heat Zone 6 46 - 60 days > 86°F |
| Bloomington | Heat Zone 2 1 - 7 days > 86°F |
| Boonsboro | Heat Zone 4 15 - 30 days > 86°F |
| Boring | Heat Zone 3 8 - 14 days > 86°F |
| Bowie | Heat Zone 5 31 - 45 days > 86°F |
| Bowleys Quarters | Heat Zone 5 31 - 45 days > 86°F |
| Bowling Green | Heat Zone 5 31 - 45 days > 86°F |
| Bowmans Addition | Heat Zone 5 31 - 45 days > 86°F |
| Boyds | Heat Zone 3 8 - 14 days > 86°F |
| Bozman | Heat Zone 6 46 - 60 days > 86°F |
| Braddock Heights | Heat Zone 5 31 - 45 days > 86°F |
| Brandywine | Heat Zone 4 15 - 30 days > 86°F |
| Breathedsville | Heat Zone 4 15 - 30 days > 86°F |
| Brentwood | Heat Zone 6 46 - 60 days > 86°F |
| Bridgeport | Heat Zone 4 15 - 30 days > 86°F |
| Brinklow | Heat Zone 4 15 - 30 days > 86°F |
| Brock Hall | Heat Zone 4 15 - 30 days > 86°F |
| Brookeville | Heat Zone 4 15 - 30 days > 86°F |
| Brooklandville | Heat Zone 4 15 - 30 days > 86°F |
| Brooklyn | Heat Zone 5 31 - 45 days > 86°F |
| Brooklyn Park | Heat Zone 5 31 - 45 days > 86°F |
| Brookmont | Heat Zone 7 61 - 90 days > 86°F |
| Brookview | Heat Zone 6 46 - 60 days > 86°F |
| Broomes Island | Heat Zone 4 15 - 30 days > 86°F |
| Brownsville | Heat Zone 5 31 - 45 days > 86°F |
| Brunswick | Heat Zone 6 46 - 60 days > 86°F |
| Bryans Road | Heat Zone 5 31 - 45 days > 86°F |
| Bryantown | Heat Zone 4 15 - 30 days > 86°F |
| Buckeystown | Heat Zone 5 31 - 45 days > 86°F |
| Burkittsville | Heat Zone 5 31 - 45 days > 86°F |
| Burtonsville | Heat Zone 5 31 - 45 days > 86°F |
| Bushwood | Heat Zone 5 31 - 45 days > 86°F |
| Butler | Heat Zone 2 1 - 7 days > 86°F |
| Butlertown | Heat Zone 4 15 - 30 days > 86°F |
| Cabin John | Heat Zone 6 46 - 60 days > 86°F |
| California | Heat Zone 4 15 - 30 days > 86°F |
| Callaway | Heat Zone 5 31 - 45 days > 86°F |
| Calvert Beach | Heat Zone 4 15 - 30 days > 86°F |
| Calverton | Heat Zone 5 31 - 45 days > 86°F |
| Cambridge | Heat Zone 6 46 - 60 days > 86°F |
| Camp David | Heat Zone 1 < 1 days > 86°F |
| Camp Springs | Heat Zone 6 46 - 60 days > 86°F |
| Cape St. Claire | Heat Zone 6 46 - 60 days > 86°F |
| Capitol Heights | Heat Zone 6 46 - 60 days > 86°F |
| Carlos | Heat Zone 2 1 - 7 days > 86°F |
| Carney | Heat Zone 4 15 - 30 days > 86°F |
| Cascade | Heat Zone 2 1 - 7 days > 86°F |
| Catonsville | Heat Zone 5 31 - 45 days > 86°F |
| Cavetown | Heat Zone 3 8 - 14 days > 86°F |
| Cearfoss | Heat Zone 4 15 - 30 days > 86°F |
| Cecilton | Heat Zone 4 15 - 30 days > 86°F |
| Cedarville | Heat Zone 4 15 - 30 days > 86°F |
| Centreville | Heat Zone 5 31 - 45 days > 86°F |
| Chance | Heat Zone 4 15 - 30 days > 86°F |
| Chaptico | Heat Zone 5 31 - 45 days > 86°F |
| Charlestown | Heat Zone 4 15 - 30 days > 86°F |
| Charlotte Hall | Heat Zone 4 15 - 30 days > 86°F |
| Charlton | Heat Zone 4 15 - 30 days > 86°F |
| Chase | Heat Zone 4 15 - 30 days > 86°F |
| Cheltenham | Heat Zone 4 15 - 30 days > 86°F |
| Chesapeake Beach | Heat Zone 4 15 - 30 days > 86°F |
| Chesapeake City | Heat Zone 4 15 - 30 days > 86°F |
| Chesapeake Ranch Estates | Heat Zone 4 15 - 30 days > 86°F |
| Chester | Heat Zone 5 31 - 45 days > 86°F |
| Chestertown | Heat Zone 4 15 - 30 days > 86°F |
| Cheverly | Heat Zone 6 46 - 60 days > 86°F |
| Chevy Chase | Heat Zone 6 46 - 60 days > 86°F |
| Chevy Chase Section Five | Heat Zone 6 46 - 60 days > 86°F |
| Chevy Chase Section Three | Heat Zone 7 61 - 90 days > 86°F |
| Chevy Chase View | Heat Zone 5 31 - 45 days > 86°F |
| Chevy Chase Village | Heat Zone 6 46 - 60 days > 86°F |
| Chewsville | Heat Zone 4 15 - 30 days > 86°F |
| Childs | Heat Zone 4 15 - 30 days > 86°F |
| Chillum | Heat Zone 6 46 - 60 days > 86°F |
| Choptank | Heat Zone 6 46 - 60 days > 86°F |
| Church Creek | Heat Zone 6 46 - 60 days > 86°F |
| Church Hill | Heat Zone 4 15 - 30 days > 86°F |
| Churchton | Heat Zone 5 31 - 45 days > 86°F |
| Churchville | Heat Zone 4 15 - 30 days > 86°F |
| Claiborne | Heat Zone 6 46 - 60 days > 86°F |
| Clarksburg | Heat Zone 3 8 - 14 days > 86°F |
| Clarksville | Heat Zone 4 15 - 30 days > 86°F |
| Clarysville | Heat Zone 2 1 - 7 days > 86°F |
| Clear Spring | Heat Zone 4 15 - 30 days > 86°F |
| Clements | Heat Zone 4 15 - 30 days > 86°F |
| Clinton | Heat Zone 6 46 - 60 days > 86°F |
| Clover Hill | Heat Zone 6 46 - 60 days > 86°F |
| Cloverly | Heat Zone 4 15 - 30 days > 86°F |
| Cobb Island | Heat Zone 7 61 - 90 days > 86°F |
| Cockeysville | Heat Zone 4 15 - 30 days > 86°F |
| Colesville | Heat Zone 5 31 - 45 days > 86°F |
| College Park | Heat Zone 6 46 - 60 days > 86°F |
| Colmar Manor | Heat Zone 6 46 - 60 days > 86°F |
| Colora | Heat Zone 4 15 - 30 days > 86°F |
| Coltons Point | Heat Zone 6 46 - 60 days > 86°F |
| Columbia | Heat Zone 4 15 - 30 days > 86°F |
| Compton | Heat Zone 5 31 - 45 days > 86°F |
| Conowingo | Heat Zone 4 15 - 30 days > 86°F |
| Cooksville | Heat Zone 4 15 - 30 days > 86°F |
| Coral Hills | Heat Zone 6 46 - 60 days > 86°F |
| Cordova | Heat Zone 5 31 - 45 days > 86°F |
| Corriganville | Heat Zone 5 31 - 45 days > 86°F |
| Cottage City | Heat Zone 6 46 - 60 days > 86°F |
| Crapo | Heat Zone 6 46 - 60 days > 86°F |
| Crellin | Heat Zone 1 < 1 days > 86°F |
| Cresaptown | Heat Zone 5 31 - 45 days > 86°F |
| Crisfield | Heat Zone 2 1 - 7 days > 86°F |
| Crocheron | Heat Zone 5 31 - 45 days > 86°F |
| Crofton | Heat Zone 5 31 - 45 days > 86°F |
| Croom | Heat Zone 4 15 - 30 days > 86°F |
| Crownsville | Heat Zone 6 46 - 60 days > 86°F |
| Crumpton | Heat Zone 4 15 - 30 days > 86°F |
| Cumberland | Heat Zone 6 46 - 60 days > 86°F |
| Curtis Bay | Heat Zone 5 31 - 45 days > 86°F |
| Damascus | Heat Zone 3 8 - 14 days > 86°F |
| Dameron | Heat Zone 5 31 - 45 days > 86°F |
| Dames Quarter | Heat Zone 4 15 - 30 days > 86°F |
| Danville | Heat Zone 3 8 - 14 days > 86°F |
| Dargan | Heat Zone 5 31 - 45 days > 86°F |
| Darlington | Heat Zone 4 15 - 30 days > 86°F |
| Darnestown | Heat Zone 4 15 - 30 days > 86°F |
| Davidsonville | Heat Zone 5 31 - 45 days > 86°F |
| Dawson | Heat Zone 3 8 - 14 days > 86°F |
| Dayton | Heat Zone 4 15 - 30 days > 86°F |
| Deal Island | Heat Zone 3 8 - 14 days > 86°F |
| Deale | Heat Zone 4 15 - 30 days > 86°F |
| Deer Park | Heat Zone 1 < 1 days > 86°F |
| Delmar | Heat Zone 5 31 - 45 days > 86°F |
| Denton | Heat Zone 5 31 - 45 days > 86°F |
| Derwood | Heat Zone 4 15 - 30 days > 86°F |
| Detmold | Heat Zone 2 1 - 7 days > 86°F |
| Dickerson | Heat Zone 4 15 - 30 days > 86°F |
| District Heights | Heat Zone 5 31 - 45 days > 86°F |
| Dodge Park | Heat Zone 5 31 - 45 days > 86°F |
| Dowell | Heat Zone 4 15 - 30 days > 86°F |
| Downsville | Heat Zone 4 15 - 30 days > 86°F |
| Drayden | Heat Zone 5 31 - 45 days > 86°F |
| Drum Point | Heat Zone 4 15 - 30 days > 86°F |
| Dundalk | Heat Zone 5 31 - 45 days > 86°F |
| Dunkirk | Heat Zone 4 15 - 30 days > 86°F |
| Dunkirk Town Center | Heat Zone 4 15 - 30 days > 86°F |
| Eagle Harbor | Heat Zone 4 15 - 30 days > 86°F |
| Earleville | Heat Zone 4 15 - 30 days > 86°F |
| East New Market | Heat Zone 6 46 - 60 days > 86°F |
| East Riverdale | Heat Zone 6 46 - 60 days > 86°F |
| Easton | Heat Zone 5 31 - 45 days > 86°F |
| Eckhart Mines | Heat Zone 2 1 - 7 days > 86°F |
| Eden | Heat Zone 4 15 - 30 days > 86°F |
| Edesville | Heat Zone 4 15 - 30 days > 86°F |
| Edgemere | Heat Zone 5 31 - 45 days > 86°F |
| Edgemont | Heat Zone 2 1 - 7 days > 86°F |
| Edgewater | Heat Zone 6 46 - 60 days > 86°F |
| Edgewood | Heat Zone 4 15 - 30 days > 86°F |
| Edmonston | Heat Zone 6 46 - 60 days > 86°F |
| Eldersburg | Heat Zone 4 15 - 30 days > 86°F |
| Eldorado | Heat Zone 6 46 - 60 days > 86°F |
| Elk Mills | Heat Zone 4 15 - 30 days > 86°F |
| Elkridge | Heat Zone 5 31 - 45 days > 86°F |
| Elkton | Heat Zone 4 15 - 30 days > 86°F |
| Ellerslie | Heat Zone 5 31 - 45 days > 86°F |
| Ellicott City | Heat Zone 4 15 - 30 days > 86°F |
| Elliott | Heat Zone 5 31 - 45 days > 86°F |
| Emmitsburg | Heat Zone 3 8 - 14 days > 86°F |
| Ernstville | Heat Zone 4 15 - 30 days > 86°F |
| Essex | Heat Zone 5 31 - 45 days > 86°F |
| Ewell | Heat Zone 4 15 - 30 days > 86°F |
| Fairland | Heat Zone 5 31 - 45 days > 86°F |
| Fairlee | Heat Zone 4 15 - 30 days > 86°F |
| Fairmount | Heat Zone 3 8 - 14 days > 86°F |
| Fairmount Heights | Heat Zone 6 46 - 60 days > 86°F |
| Fairplay | Heat Zone 4 15 - 30 days > 86°F |
| Fairview | Heat Zone 2 1 - 7 days > 86°F |
| Fallston | Heat Zone 4 15 - 30 days > 86°F |
| Faulkner | Heat Zone 5 31 - 45 days > 86°F |
| Federalsburg | Heat Zone 5 31 - 45 days > 86°F |
| Ferndale | Heat Zone 5 31 - 45 days > 86°F |
| Finksburg | Heat Zone 4 15 - 30 days > 86°F |
| Finzel | Heat Zone 2 1 - 7 days > 86°F |
| Fishing Creek | Heat Zone 6 46 - 60 days > 86°F |
| Flintstone | Heat Zone 5 31 - 45 days > 86°F |
| Forest Glen | Heat Zone 5 31 - 45 days > 86°F |
| Forest Heights | Heat Zone 6 46 - 60 days > 86°F |
| Forest Hill | Heat Zone 4 15 - 30 days > 86°F |
| Forestville | Heat Zone 6 46 - 60 days > 86°F |
| Fork | Heat Zone 4 15 - 30 days > 86°F |
| Fort George G Mead Junction | Heat Zone 5 31 - 45 days > 86°F |
| Fort George G Meade | Heat Zone 5 31 - 45 days > 86°F |
| Fort Howard | Heat Zone 5 31 - 45 days > 86°F |
| Fort Ritchie | Heat Zone 2 1 - 7 days > 86°F |
| Fort Washington | Heat Zone 6 46 - 60 days > 86°F |
| Fountainhead-Orchard Hills | Heat Zone 4 15 - 30 days > 86°F |
| Four Corners | Heat Zone 6 46 - 60 days > 86°F |
| Franklin | Heat Zone 2 1 - 7 days > 86°F |
| Frederick | Heat Zone 6 46 - 60 days > 86°F |
| Freeland | Heat Zone 2 1 - 7 days > 86°F |
| Frenchtown-Rumbly | Heat Zone 2 1 - 7 days > 86°F |
| Friendly | Heat Zone 6 46 - 60 days > 86°F |
| Friendship | Heat Zone 4 15 - 30 days > 86°F |
| Friendship Village | Heat Zone 7 61 - 90 days > 86°F |
| Friendsville | Heat Zone 1 < 1 days > 86°F |
| Frostburg | Heat Zone 1 < 1 days > 86°F |
| Fruitland | Heat Zone 5 31 - 45 days > 86°F |
| Fulton | Heat Zone 5 31 - 45 days > 86°F |
| Funkstown | Heat Zone 4 15 - 30 days > 86°F |
| Gaithersburg | Heat Zone 4 15 - 30 days > 86°F |
| Galena | Heat Zone 4 15 - 30 days > 86°F |
| Galestown | Heat Zone 6 46 - 60 days > 86°F |
| Galesville | Heat Zone 5 31 - 45 days > 86°F |
| Gambrills | Heat Zone 5 31 - 45 days > 86°F |
| Gapland | Heat Zone 5 31 - 45 days > 86°F |
| Garrett Park | Heat Zone 5 31 - 45 days > 86°F |
| Garretts Mill | Heat Zone 5 31 - 45 days > 86°F |
| Garrison | Heat Zone 5 31 - 45 days > 86°F |
| Georgetown | Heat Zone 4 15 - 30 days > 86°F |
| Germantown | Heat Zone 3 8 - 14 days > 86°F |
| Gibson Island | Heat Zone 6 46 - 60 days > 86°F |
| Gilmore | Heat Zone 2 1 - 7 days > 86°F |
| Girdletree | Heat Zone 3 8 - 14 days > 86°F |
| Glassmanor | Heat Zone 6 46 - 60 days > 86°F |
| Glen Arm | Heat Zone 4 15 - 30 days > 86°F |
| Glen Burnie | Heat Zone 5 31 - 45 days > 86°F |
| Glen Echo | Heat Zone 6 46 - 60 days > 86°F |
| Glen Echo Heights | Heat Zone 6 46 - 60 days > 86°F |
| Glenarden | Heat Zone 5 31 - 45 days > 86°F |
| Glenelg | Heat Zone 4 15 - 30 days > 86°F |
| Glenmont | Heat Zone 4 15 - 30 days > 86°F |
| Glenn Dale | Heat Zone 6 46 - 60 days > 86°F |
| Glenwood | Heat Zone 6 46 - 60 days > 86°F |
| Glyndon | Heat Zone 4 15 - 30 days > 86°F |
| Goddard | Heat Zone 5 31 - 45 days > 86°F |
| Golden Beach | Heat Zone 4 15 - 30 days > 86°F |
| Goldsboro | Heat Zone 5 31 - 45 days > 86°F |
| Gorman | Heat Zone 1 < 1 days > 86°F |
| Grahamtown | Heat Zone 2 1 - 7 days > 86°F |
| Grantsville | Heat Zone 1 < 1 days > 86°F |
| Grasonville | Heat Zone 5 31 - 45 days > 86°F |
| Great Mills | Heat Zone 5 31 - 45 days > 86°F |
| Greater Upper Marlboro | Heat Zone 4 15 - 30 days > 86°F |
| Green Haven | Heat Zone 5 31 - 45 days > 86°F |
| Green Valley | Heat Zone 4 15 - 30 days > 86°F |
| Greenbelt | Heat Zone 4 15 - 30 days > 86°F |
| Greensboro | Heat Zone 5 31 - 45 days > 86°F |
| Greensburg | Heat Zone 2 1 - 7 days > 86°F |
| Gunpowder | Heat Zone 4 15 - 30 days > 86°F |
| Gwynn Oak | Heat Zone 5 31 - 45 days > 86°F |
| Hagerstown | Heat Zone 4 15 - 30 days > 86°F |
| Halethorpe | Heat Zone 5 31 - 45 days > 86°F |
| Halfway | Heat Zone 4 15 - 30 days > 86°F |
| Hampstead | Heat Zone 3 8 - 14 days > 86°F |
| Hampton | Heat Zone 4 15 - 30 days > 86°F |
| Hancock | Heat Zone 2 1 - 7 days > 86°F |
| Hanover | Heat Zone 5 31 - 45 days > 86°F |
| Harmans | Heat Zone 5 31 - 45 days > 86°F |
| Harwood | Heat Zone 5 31 - 45 days > 86°F |
| Havre de Grace | Heat Zone 4 15 - 30 days > 86°F |
| Hebron | Heat Zone 5 31 - 45 days > 86°F |
| Helen | Heat Zone 4 15 - 30 days > 86°F |
| Henderson | Heat Zone 5 31 - 45 days > 86°F |
| Henryton | Heat Zone 4 15 - 30 days > 86°F |
| Herald Harbor | Heat Zone 6 46 - 60 days > 86°F |
| Highfield-Cascade | Heat Zone 2 1 - 7 days > 86°F |
| Highland | Heat Zone 4 15 - 30 days > 86°F |
| Highland Beach | Heat Zone 6 46 - 60 days > 86°F |
| Hillandale | Heat Zone 5 31 - 45 days > 86°F |
| Hillcrest Heights | Heat Zone 6 46 - 60 days > 86°F |
| Hillsboro | Heat Zone 5 31 - 45 days > 86°F |
| Hillsmere Shores | Heat Zone 6 46 - 60 days > 86°F |
| Hollywood | Heat Zone 4 15 - 30 days > 86°F |
| Hughesville | Heat Zone 4 15 - 30 days > 86°F |
| Hunt Valley | Heat Zone 4 15 - 30 days > 86°F |
| Huntingtown | Heat Zone 4 15 - 30 days > 86°F |
| Huntingtown Town Center | Heat Zone 4 15 - 30 days > 86°F |
| Hurlock | Heat Zone 6 46 - 60 days > 86°F |
| Hutton | Heat Zone 1 < 1 days > 86°F |
| Hyattsville | Heat Zone 6 46 - 60 days > 86°F |
| Hydes | Heat Zone 4 15 - 30 days > 86°F |
| Ijamsville | Heat Zone 4 15 - 30 days > 86°F |
| Ilchester | Heat Zone 5 31 - 45 days > 86°F |
| Indian Head | Heat Zone 5 31 - 45 days > 86°F |
| Indian Springs | Heat Zone 4 15 - 30 days > 86°F |
| Ingleside | Heat Zone 5 31 - 45 days > 86°F |
| Ironsides | Heat Zone 5 31 - 45 days > 86°F |
| Issue | Heat Zone 7 61 - 90 days > 86°F |
| Jarrettsville | Heat Zone 4 15 - 30 days > 86°F |
| Jefferson | Heat Zone 5 31 - 45 days > 86°F |
| Jennings | Heat Zone 1 < 1 days > 86°F |
| Jessup | Heat Zone 5 31 - 45 days > 86°F |
| Jesterville | Heat Zone 5 31 - 45 days > 86°F |
| Joppa | Heat Zone 4 15 - 30 days > 86°F |
| Joppatowne | Heat Zone 4 15 - 30 days > 86°F |
| Jugtown | Heat Zone 4 15 - 30 days > 86°F |
| Keedysville | Heat Zone 4 15 - 30 days > 86°F |
| Kemp Mill | Heat Zone 5 31 - 45 days > 86°F |
| Kennedyville | Heat Zone 4 15 - 30 days > 86°F |
| Kensington | Heat Zone 5 31 - 45 days > 86°F |
| Kent Narrows | Heat Zone 5 31 - 45 days > 86°F |
| Kentland | Heat Zone 6 46 - 60 days > 86°F |
| Kettering | Heat Zone 4 15 - 30 days > 86°F |
| Keymar | Heat Zone 3 8 - 14 days > 86°F |
| Kingstown | Heat Zone 4 15 - 30 days > 86°F |
| Kingsville | Heat Zone 4 15 - 30 days > 86°F |
| Kitzmiller | Heat Zone 1 < 1 days > 86°F |
| Klondike | Heat Zone 2 1 - 7 days > 86°F |
| Knoxville | Heat Zone 5 31 - 45 days > 86°F |
| La Plata | Heat Zone 4 15 - 30 days > 86°F |
| La Vale | Heat Zone 5 31 - 45 days > 86°F |
| Ladiesburg | Heat Zone 3 8 - 14 days > 86°F |
| Lake Arbor | Heat Zone 5 31 - 45 days > 86°F |
| Lake Shore | Heat Zone 6 46 - 60 days > 86°F |
| Landover | Heat Zone 6 46 - 60 days > 86°F |
| Landover Hills | Heat Zone 5 31 - 45 days > 86°F |
| Langley Park | Heat Zone 6 46 - 60 days > 86°F |
| Lanham | Heat Zone 5 31 - 45 days > 86°F |
| Lansdowne | Heat Zone 5 31 - 45 days > 86°F |
| Largo | Heat Zone 5 31 - 45 days > 86°F |
| Laurel | Heat Zone 5 31 - 45 days > 86°F |
| Lawsonia | Heat Zone 2 1 - 7 days > 86°F |
| Layhill | Heat Zone 4 15 - 30 days > 86°F |
| Laytonsville | Heat Zone 4 15 - 30 days > 86°F |
| Leisure World | Heat Zone 4 15 - 30 days > 86°F |
| Leitersburg | Heat Zone 4 15 - 30 days > 86°F |
| Leonardtown | Heat Zone 5 31 - 45 days > 86°F |
| Lexington Park | Heat Zone 4 15 - 30 days > 86°F |
| Libertytown | Heat Zone 3 8 - 14 days > 86°F |
| Lineboro | Heat Zone 2 1 - 7 days > 86°F |
| Linganore | Heat Zone 3 8 - 14 days > 86°F |
| Linkwood | Heat Zone 6 46 - 60 days > 86°F |
| Linthicum | Heat Zone 5 31 - 45 days > 86°F |
| Linthicum Heights | Heat Zone 5 31 - 45 days > 86°F |
| Linwood | Heat Zone 4 15 - 30 days > 86°F |
| Lisbon | Heat Zone 4 15 - 30 days > 86°F |
| Little Orleans | Heat Zone 3 8 - 14 days > 86°F |
| Loch Lynn Heights | Heat Zone 1 < 1 days > 86°F |
| Lochearn | Heat Zone 5 31 - 45 days > 86°F |
| Lonaconing | Heat Zone 2 1 - 7 days > 86°F |
| Londontowne | Heat Zone 6 46 - 60 days > 86°F |
| Long Beach | Heat Zone 4 15 - 30 days > 86°F |
| Long Green | Heat Zone 4 15 - 30 days > 86°F |
| Long Meadow | Heat Zone 4 15 - 30 days > 86°F |
| Lothian | Heat Zone 5 31 - 45 days > 86°F |
| Loveville | Heat Zone 4 15 - 30 days > 86°F |
| Luke | Heat Zone 2 1 - 7 days > 86°F |
| Lusby | Heat Zone 4 15 - 30 days > 86°F |
| Lutherville | Heat Zone 4 15 - 30 days > 86°F |
| Lutherville-Timonium | Heat Zone 4 15 - 30 days > 86°F |
| Madison | Heat Zone 6 46 - 60 days > 86°F |
| Manchester | Heat Zone 3 8 - 14 days > 86°F |
| Manokin | Heat Zone 4 15 - 30 days > 86°F |
| Mapleville | Heat Zone 4 15 - 30 days > 86°F |
| Marbury | Heat Zone 5 31 - 45 days > 86°F |
| Mardela Springs | Heat Zone 6 46 - 60 days > 86°F |
| Mariners | Heat Zone 3 8 - 14 days > 86°F |
| Marlboro Meadows | Heat Zone 4 15 - 30 days > 86°F |
| Marlow Heights | Heat Zone 6 46 - 60 days > 86°F |
| Marlton | Heat Zone 4 15 - 30 days > 86°F |
| Marriottsville | Heat Zone 4 15 - 30 days > 86°F |
| Martin's Additions | Heat Zone 6 46 - 60 days > 86°F |
| Marydel | Heat Zone 5 31 - 45 days > 86°F |
| Maryland City | Heat Zone 5 31 - 45 days > 86°F |
| Maryland Line | Heat Zone 2 1 - 7 days > 86°F |
| Massey | Heat Zone 4 15 - 30 days > 86°F |
| Maugansville | Heat Zone 4 15 - 30 days > 86°F |
| Mayo | Heat Zone 6 46 - 60 days > 86°F |
| Mays Chapel | Heat Zone 4 15 - 30 days > 86°F |
| McCoole | Heat Zone 3 8 - 14 days > 86°F |
| McDaniel | Heat Zone 6 46 - 60 days > 86°F |
| McHenry | Heat Zone 1 < 1 days > 86°F |
| Mechanicsville | Heat Zone 4 15 - 30 days > 86°F |
| Mellwood | Heat Zone 5 31 - 45 days > 86°F |
| Mercersville | Heat Zone 4 15 - 30 days > 86°F |
| Middle River | Heat Zone 4 15 - 30 days > 86°F |
| Middleburg | Heat Zone 3 8 - 14 days > 86°F |
| Middletown | Heat Zone 5 31 - 45 days > 86°F |
| Midland | Heat Zone 2 1 - 7 days > 86°F |
| Midlothian | Heat Zone 2 1 - 7 days > 86°F |
| Milford Mill | Heat Zone 5 31 - 45 days > 86°F |
| Millersville | Heat Zone 5 31 - 45 days > 86°F |
| Millington | Heat Zone 4 15 - 30 days > 86°F |
| Mitchellville | Heat Zone 5 31 - 45 days > 86°F |
| Monkton | Heat Zone 2 1 - 7 days > 86°F |
| Monrovia | Heat Zone 4 15 - 30 days > 86°F |
| Montgomery Village | Heat Zone 4 15 - 30 days > 86°F |
| Morganza | Heat Zone 4 15 - 30 days > 86°F |
| Morningside | Heat Zone 6 46 - 60 days > 86°F |
| Moscow | Heat Zone 2 1 - 7 days > 86°F |
| Mount Aetna | Heat Zone 4 15 - 30 days > 86°F |
| Mount Airy | Heat Zone 3 8 - 14 days > 86°F |
| Mount Briar | Heat Zone 5 31 - 45 days > 86°F |
| Mount Lena | Heat Zone 4 15 - 30 days > 86°F |
| Mount Rainier | Heat Zone 6 46 - 60 days > 86°F |
| Mount Savage | Heat Zone 2 1 - 7 days > 86°F |
| Mount Vernon | Heat Zone 5 31 - 45 days > 86°F |
| Mount Victoria | Heat Zone 6 46 - 60 days > 86°F |
| Mountain Lake Park | Heat Zone 1 < 1 days > 86°F |
| Myersville | Heat Zone 4 15 - 30 days > 86°F |
| Nanjemoy | Heat Zone 5 31 - 45 days > 86°F |
| Nanticoke | Heat Zone 5 31 - 45 days > 86°F |
| Nanticoke Acres | Heat Zone 4 15 - 30 days > 86°F |
| National | Heat Zone 2 1 - 7 days > 86°F |
| Naval Academy | Heat Zone 6 46 - 60 days > 86°F |
| Neavitt | Heat Zone 6 46 - 60 days > 86°F |
| New Carrollton | Heat Zone 5 31 - 45 days > 86°F |
| New Market | Heat Zone 4 15 - 30 days > 86°F |
| New Midway | Heat Zone 4 15 - 30 days > 86°F |
| New Windsor | Heat Zone 4 15 - 30 days > 86°F |
| Newark | Heat Zone 4 15 - 30 days > 86°F |
| Newburg | Heat Zone 6 46 - 60 days > 86°F |
| Newcomb | Heat Zone 6 46 - 60 days > 86°F |
| Nikep | Heat Zone 2 1 - 7 days > 86°F |
| North Beach | Heat Zone 4 15 - 30 days > 86°F |
| North Bel Air | Heat Zone 4 15 - 30 days > 86°F |
| North Bethesda | Heat Zone 4 15 - 30 days > 86°F |
| North Brentwood | Heat Zone 6 46 - 60 days > 86°F |
| North Chevy Chase | Heat Zone 6 46 - 60 days > 86°F |
| North East | Heat Zone 4 15 - 30 days > 86°F |
| North Kensington | Heat Zone 5 31 - 45 days > 86°F |
| North Laurel | Heat Zone 5 31 - 45 days > 86°F |
| North Potomac | Heat Zone 4 15 - 30 days > 86°F |
| Nottingham | Heat Zone 4 15 - 30 days > 86°F |
| Oakland | Heat Zone 1 < 1 days > 86°F |
| Ocean | Heat Zone 2 1 - 7 days > 86°F |
| Ocean City | Heat Zone 3 8 - 14 days > 86°F |
| Ocean Pines | Heat Zone 3 8 - 14 days > 86°F |
| Odenton | Heat Zone 5 31 - 45 days > 86°F |
| Oldtown | Heat Zone 5 31 - 45 days > 86°F |
| Olney | Heat Zone 4 15 - 30 days > 86°F |
| Overlea | Heat Zone 4 15 - 30 days > 86°F |
| Owings | Heat Zone 4 15 - 30 days > 86°F |
| Owings Mills | Heat Zone 5 31 - 45 days > 86°F |
| Oxford | Heat Zone 6 46 - 60 days > 86°F |
| Oxon Hill | Heat Zone 6 46 - 60 days > 86°F |
| Palmer Park | Heat Zone 5 31 - 45 days > 86°F |
| Paramount-Long Meadow | Heat Zone 4 15 - 30 days > 86°F |
| Park Hall | Heat Zone 4 15 - 30 days > 86°F |
| Parkton | Heat Zone 1 < 1 days > 86°F |
| Parkville | Heat Zone 4 15 - 30 days > 86°F |
| Parole | Heat Zone 6 46 - 60 days > 86°F |
| Parsonsburg | Heat Zone 4 15 - 30 days > 86°F |
| Pasadena | Heat Zone 5 31 - 45 days > 86°F |
| Patuxent River | Heat Zone 5 31 - 45 days > 86°F |
| Pecktonville | Heat Zone 3 8 - 14 days > 86°F |
| Peppermill Village | Heat Zone 6 46 - 60 days > 86°F |
| Perry Hall | Heat Zone 4 15 - 30 days > 86°F |
| Perry Point | Heat Zone 4 15 - 30 days > 86°F |
| Perryman | Heat Zone 4 15 - 30 days > 86°F |
| Perryville | Heat Zone 4 15 - 30 days > 86°F |
| Phoenix | Heat Zone 4 15 - 30 days > 86°F |
| Pikesville | Heat Zone 5 31 - 45 days > 86°F |
| Pinesburg | Heat Zone 4 15 - 30 days > 86°F |
| Piney Point | Heat Zone 6 46 - 60 days > 86°F |
| Pinto | Heat Zone 5 31 - 45 days > 86°F |
| Pittsville | Heat Zone 4 15 - 30 days > 86°F |
| Pleasant Grove | Heat Zone 3 8 - 14 days > 86°F |
| Pleasant Hills | Heat Zone 4 15 - 30 days > 86°F |
| Pocomoke City | Heat Zone 3 8 - 14 days > 86°F |
| Point Of Rocks | Heat Zone 5 31 - 45 days > 86°F |
| Pokomoke City | Heat Zone 3 8 - 14 days > 86°F |
| Pomfret | Heat Zone 4 15 - 30 days > 86°F |
| Pondsville | Heat Zone 4 15 - 30 days > 86°F |
| Poolesville | Heat Zone 4 15 - 30 days > 86°F |
| Port Deposit | Heat Zone 4 15 - 30 days > 86°F |
| Port Republic | Heat Zone 4 15 - 30 days > 86°F |
| Port Tobacco | Heat Zone 4 15 - 30 days > 86°F |
| Potomac | Heat Zone 5 31 - 45 days > 86°F |
| Potomac Heights | Heat Zone 5 31 - 45 days > 86°F |
| Potomac Park | Heat Zone 5 31 - 45 days > 86°F |
| Powellville | Heat Zone 4 15 - 30 days > 86°F |
| Preston | Heat Zone 6 46 - 60 days > 86°F |
| Price | Heat Zone 4 15 - 30 days > 86°F |
| Prince Frederick | Heat Zone 4 15 - 30 days > 86°F |
| Princess Anne | Heat Zone 4 15 - 30 days > 86°F |
| Pumphrey | Heat Zone 5 31 - 45 days > 86°F |
| Pylesville | Heat Zone 4 15 - 30 days > 86°F |
| Quantico | Heat Zone 5 31 - 45 days > 86°F |
| Queen Anne | Heat Zone 5 31 - 45 days > 86°F |
| Queenstown | Heat Zone 5 31 - 45 days > 86°F |
| Randallstown | Heat Zone 5 31 - 45 days > 86°F |
| Rawlings | Heat Zone 4 15 - 30 days > 86°F |
| Redland | Heat Zone 4 15 - 30 days > 86°F |
| Rehobeth | Heat Zone 3 8 - 14 days > 86°F |
| Reid | Heat Zone 4 15 - 30 days > 86°F |
| Reisterstown | Heat Zone 4 15 - 30 days > 86°F |
| Rhodesdale | Heat Zone 6 46 - 60 days > 86°F |
| Riderwood | Heat Zone 4 15 - 30 days > 86°F |
| Ridge | Heat Zone 5 31 - 45 days > 86°F |
| Ridgely | Heat Zone 5 31 - 45 days > 86°F |
| Ringgold | Heat Zone 3 8 - 14 days > 86°F |
| Rising Sun | Heat Zone 4 15 - 30 days > 86°F |
| Riva | Heat Zone 6 46 - 60 days > 86°F |
| Riverdale | Heat Zone 6 46 - 60 days > 86°F |
| Riverdale Park | Heat Zone 6 46 - 60 days > 86°F |
| Riverside | Heat Zone 4 15 - 30 days > 86°F |
| Riviera Beach | Heat Zone 5 31 - 45 days > 86°F |
| Robinwood | Heat Zone 4 15 - 30 days > 86°F |
| Rock Hall | Heat Zone 5 31 - 45 days > 86°F |
| Rock Point | Heat Zone 7 61 - 90 days > 86°F |
| Rockville | Heat Zone 4 15 - 30 days > 86°F |
| Rocky Ridge | Heat Zone 3 8 - 14 days > 86°F |
| Rohrersville | Heat Zone 5 31 - 45 days > 86°F |
| Rosaryville | Heat Zone 4 15 - 30 days > 86°F |
| Rosedale | Heat Zone 4 15 - 30 days > 86°F |
| Rosemont | Heat Zone 6 46 - 60 days > 86°F |
| Rossmoor | Heat Zone 4 15 - 30 days > 86°F |
| Rossville | Heat Zone 4 15 - 30 days > 86°F |
| Royal Oak | Heat Zone 6 46 - 60 days > 86°F |
| Sabillasville | Heat Zone 2 1 - 7 days > 86°F |
| Saint George Island | Heat Zone 6 46 - 60 days > 86°F |
| Saint Inigoes | Heat Zone 5 31 - 45 days > 86°F |
| Saint James | Heat Zone 4 15 - 30 days > 86°F |
| Saint Leonard | Heat Zone 4 15 - 30 days > 86°F |
| Saint Marys City | Heat Zone 5 31 - 45 days > 86°F |
| Saint Michaels | Heat Zone 6 46 - 60 days > 86°F |
| Salisbury | Heat Zone 5 31 - 45 days > 86°F |
| San Mar | Heat Zone 4 15 - 30 days > 86°F |
| Sandy Hook | Heat Zone 5 31 - 45 days > 86°F |
| Sandy Spring | Heat Zone 4 15 - 30 days > 86°F |
| Savage | Heat Zone 5 31 - 45 days > 86°F |
| Scotland | Heat Zone 5 31 - 45 days > 86°F |
| Seabrook | Heat Zone 5 31 - 45 days > 86°F |
| Seat Pleasant | Heat Zone 6 46 - 60 days > 86°F |
| Secretary | Heat Zone 6 46 - 60 days > 86°F |
| Selby-on-the-Bay | Heat Zone 6 46 - 60 days > 86°F |
| Severn | Heat Zone 5 31 - 45 days > 86°F |
| Severna Park | Heat Zone 6 46 - 60 days > 86°F |
| Shady Side | Heat Zone 5 31 - 45 days > 86°F |
| Sharpsburg | Heat Zone 4 15 - 30 days > 86°F |
| Sharptown | Heat Zone 6 46 - 60 days > 86°F |
| Sherwood | Heat Zone 6 46 - 60 days > 86°F |
| Showell | Heat Zone 3 8 - 14 days > 86°F |
| Silver Hill | Heat Zone 6 46 - 60 days > 86°F |
| Silver Spring | Heat Zone 6 46 - 60 days > 86°F |
| Simpsonville | Heat Zone 4 15 - 30 days > 86°F |
| Smith Island | Heat Zone 4 15 - 30 days > 86°F |
| Smithsburg | Heat Zone 3 8 - 14 days > 86°F |
| Snow Hill | Heat Zone 4 15 - 30 days > 86°F |
| Solomons | Heat Zone 4 15 - 30 days > 86°F |
| Somerset | Heat Zone 6 46 - 60 days > 86°F |
| South Bel Air | Heat Zone 4 15 - 30 days > 86°F |
| South Gate | Heat Zone 5 31 - 45 days > 86°F |
| South Kensington | Heat Zone 5 31 - 45 days > 86°F |
| South Laurel | Heat Zone 4 15 - 30 days > 86°F |
| Southern MD Facility | Heat Zone 4 15 - 30 days > 86°F |
| Sparks Glencoe | Heat Zone 2 1 - 7 days > 86°F |
| Sparrows Point | Heat Zone 5 31 - 45 days > 86°F |
| Spencerville | Heat Zone 4 15 - 30 days > 86°F |
| Spring Gap | Heat Zone 5 31 - 45 days > 86°F |
| Spring Ridge | Heat Zone 5 31 - 45 days > 86°F |
| Springdale | Heat Zone 5 31 - 45 days > 86°F |
| St. Charles | Heat Zone 4 15 - 30 days > 86°F |
| Stevenson | Heat Zone 5 31 - 45 days > 86°F |
| Stevensville | Heat Zone 6 46 - 60 days > 86°F |
| Stevensville South | Heat Zone 6 46 - 60 days > 86°F |
| Still Pond | Heat Zone 4 15 - 30 days > 86°F |
| Stockton | Heat Zone 2 1 - 7 days > 86°F |
| Street | Heat Zone 4 15 - 30 days > 86°F |
| Sudlersville | Heat Zone 4 15 - 30 days > 86°F |
| Suitland | Heat Zone 6 46 - 60 days > 86°F |
| Sunderland | Heat Zone 4 15 - 30 days > 86°F |
| Swanton | Heat Zone 1 < 1 days > 86°F |
| Sykesville | Heat Zone 4 15 - 30 days > 86°F |
| Takoma Park | Heat Zone 6 46 - 60 days > 86°F |
| Tall Timbers | Heat Zone 5 31 - 45 days > 86°F |
| Taneytown | Heat Zone 3 8 - 14 days > 86°F |
| Taylors Island | Heat Zone 5 31 - 45 days > 86°F |
| Temple Hills | Heat Zone 6 46 - 60 days > 86°F |
| Templeville | Heat Zone 4 15 - 30 days > 86°F |
| Thurmont | Heat Zone 3 8 - 14 days > 86°F |
| Tilghman | Heat Zone 6 46 - 60 days > 86°F |
| Tilghman Island | Heat Zone 6 46 - 60 days > 86°F |
| Tilghmanton | Heat Zone 4 15 - 30 days > 86°F |
| Timonium | Heat Zone 4 15 - 30 days > 86°F |
| Toddville | Heat Zone 5 31 - 45 days > 86°F |
| Tolchester | Heat Zone 4 15 - 30 days > 86°F |
| Towson | Heat Zone 4 15 - 30 days > 86°F |
| Tracys Landing | Heat Zone 4 15 - 30 days > 86°F |
| Trappe | Heat Zone 6 46 - 60 days > 86°F |
| Travilah | Heat Zone 4 15 - 30 days > 86°F |
| Tuscarora | Heat Zone 4 15 - 30 days > 86°F |
| Tyaskin | Heat Zone 5 31 - 45 days > 86°F |
| Tylerton | Heat Zone 4 15 - 30 days > 86°F |
| Union Bridge | Heat Zone 4 15 - 30 days > 86°F |
| Unionville | Heat Zone 3 8 - 14 days > 86°F |
| University Park | Heat Zone 6 46 - 60 days > 86°F |
| Upper Fairmount | Heat Zone 3 8 - 14 days > 86°F |
| Upper Falls | Heat Zone 4 15 - 30 days > 86°F |
| Upper Marlboro | Heat Zone 4 15 - 30 days > 86°F |
| Upperco | Heat Zone 3 8 - 14 days > 86°F |
| Urbana | Heat Zone 4 15 - 30 days > 86°F |
| Vale Summit | Heat Zone 2 1 - 7 days > 86°F |
| Valley Lee | Heat Zone 5 31 - 45 days > 86°F |
| Vienna | Heat Zone 6 46 - 60 days > 86°F |
| Waldorf | Heat Zone 4 15 - 30 days > 86°F |
| Walker Mill | Heat Zone 6 46 - 60 days > 86°F |
| Walkersville | Heat Zone 5 31 - 45 days > 86°F |
| Warwick | Heat Zone 5 31 - 45 days > 86°F |
| Washington Grove | Heat Zone 4 15 - 30 days > 86°F |
| Waterview | Heat Zone 4 15 - 30 days > 86°F |
| Welcome | Heat Zone 4 15 - 30 days > 86°F |
| Wenona | Heat Zone 3 8 - 14 days > 86°F |
| West Denton | Heat Zone 5 31 - 45 days > 86°F |
| West Elkridge | Heat Zone 5 31 - 45 days > 86°F |
| West Friendship | Heat Zone 4 15 - 30 days > 86°F |
| West Laurel | Heat Zone 5 31 - 45 days > 86°F |
| West Ocean City | Heat Zone 3 8 - 14 days > 86°F |
| West Pocomoke | Heat Zone 3 8 - 14 days > 86°F |
| West River | Heat Zone 5 31 - 45 days > 86°F |
| Westernport | Heat Zone 2 1 - 7 days > 86°F |
| Westminster | Heat Zone 5 31 - 45 days > 86°F |
| Westminster South | Heat Zone 5 31 - 45 days > 86°F |
| Westover | Heat Zone 4 15 - 30 days > 86°F |
| Westphalia | Heat Zone 4 15 - 30 days > 86°F |
| Whaleyville | Heat Zone 4 15 - 30 days > 86°F |
| Wheaton | Heat Zone 5 31 - 45 days > 86°F |
| White Hall | Heat Zone 2 1 - 7 days > 86°F |
| White Marsh | Heat Zone 4 15 - 30 days > 86°F |
| White Oak | Heat Zone 5 31 - 45 days > 86°F |
| White Plains | Heat Zone 4 15 - 30 days > 86°F |
| Whiteford | Heat Zone 3 8 - 14 days > 86°F |
| Whitehaven | Heat Zone 5 31 - 45 days > 86°F |
| Willards | Heat Zone 4 15 - 30 days > 86°F |
| Williamsport | Heat Zone 4 15 - 30 days > 86°F |
| Williston | Heat Zone 5 31 - 45 days > 86°F |
| Wilson-Conococheague | Heat Zone 4 15 - 30 days > 86°F |
| Windsor Mill | Heat Zone 5 31 - 45 days > 86°F |
| Wingate | Heat Zone 5 31 - 45 days > 86°F |
| Wisp Four Seasons Resort | Heat Zone 1 < 1 days > 86°F |
| Wittman | Heat Zone 6 46 - 60 days > 86°F |
| Woodbine | Heat Zone 4 15 - 30 days > 86°F |
| Woodland | Heat Zone 2 1 - 7 days > 86°F |
| Woodlawn | Heat Zone 5 31 - 45 days > 86°F |
| Woodmore | Heat Zone 5 31 - 45 days > 86°F |
| Woodsboro | Heat Zone 4 15 - 30 days > 86°F |
| Woodstock | Heat Zone 4 15 - 30 days > 86°F |
| Woolford | Heat Zone 6 46 - 60 days > 86°F |
| Worton | Heat Zone 4 15 - 30 days > 86°F |
| Wye Mills | Heat Zone 5 31 - 45 days > 86°F |
| Yarrowsburg | Heat Zone 5 31 - 45 days > 86°F |
| Zihlman | Heat Zone 1 < 1 days > 86°F |