| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 67a - Northern Limestone/Dolomite Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 22821 - Dayton, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 23 | 30 | 38 | 49 | 58 | 62 | 60 | 53 | 41 | 32 | 25 | 41 |
| Avg Max Temp (°F) | 41 | 45 | 54 | 65 | 74 | 82 | 86 | 84 | 77 | 66 | 55 | 45 | 65 |
| Avg Precip (In.) | 2.54 | 2.15 | 2.86 | 2.63 | 3.63 | 3.52 | 3.71 | 3.38 | 3.48 | 2.82 | 2.74 | 2.37 | 35.84 |