| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 64c - Piedmont Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 20198 - The Plains, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 32 | 41 | 50 | 59 | 64 | 62 | 55 | 43 | 35 | 26 | 43 |
| Avg Max Temp (°F) | 42 | 45 | 55 | 65 | 73 | 81 | 86 | 85 | 78 | 67 | 56 | 46 | 65 |
| Avg Precip (In.) | 3.32 | 2.73 | 3.65 | 3.38 | 4.38 | 3.95 | 3.58 | 4.51 | 3.98 | 3.46 | 3.56 | 2.99 | 43.48 |