| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°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 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| 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 24441 - Grottoes, VA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 23 | 31 | 39 | 49 | 58 | 62 | 60 | 53 | 41 | 33 | 25 | 41 |
| Avg Max Temp (°F) | 42 | 46 | 55 | 65 | 73 | 81 | 85 | 84 | 77 | 67 | 56 | 46 | 65 |
| Avg Precip (In.) | 2.84 | 2.43 | 3.15 | 2.9 | 3.89 | 3.57 | 3.93 | 3.55 | 3.79 | 3.28 | 3.03 | 2.55 | 38.9 |