| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 63b - Chesapeake-Pamlico Lowlands and Tidal Marshes |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 20688 - Solomons, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 29 | 37 | 45 | 56 | 65 | 70 | 69 | 63 | 50 | 41 | 32 | 49 |
| Avg Max Temp (°F) | 43 | 47 | 55 | 66 | 75 | 83 | 87 | 86 | 79 | 68 | 58 | 49 | 66 |
| Avg Precip (In.) | 3.78 | 3.12 | 4.28 | 3.3 | 4.24 | 3.74 | 4.3 | 4.03 | 4.13 | 3.47 | 3.32 | 3.34 | 45.05 |