| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°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: | 45e - Northern Inner Piedmont | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 22025 - Dumfries, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 35 | 43 | 54 | 63 | 68 | 66 | 59 | 46 | 37 | 30 | 46 |
| Avg Max Temp (°F) | 44 | 47 | 56 | 67 | 75 | 83 | 87 | 86 | 79 | 68 | 58 | 48 | 66 |
| Avg Precip (In.) | 3.36 | 2.8 | 3.75 | 3.16 | 4.09 | 3.63 | 3.97 | 3.77 | 4.05 | 3.44 | 3.31 | 3.19 | 42.53 |