| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 65n - Chesapeake Rolling Coastal Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 20603 - Waldorf, MD | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 35 | 42 | 52 | 61 | 66 | 64 | 58 | 46 | 37 | 29 | 45 |
| Avg Max Temp (°F) | 45 | 49 | 59 | 69 | 76 | 83 | 87 | 86 | 80 | 69 | 58 | 48 | 67 |
| Avg Precip (In.) | 3.48 | 2.87 | 3.94 | 3.2 | 4.19 | 3.78 | 4.16 | 4.18 | 4.2 | 3.42 | 3.29 | 3.23 | 43.93 |