| 2023 Hardiness Zone: | 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 | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 70b - Monongahela Transition Zone | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 26554 - Fairmont, WV | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 38 | 48 | 56 | 61 | 60 | 53 | 41 | 33 | 25 | 41 |
| Avg Max Temp (°F) | 38 | 42 | 53 | 64 | 73 | 80 | 84 | 82 | 76 | 65 | 53 | 43 | 63 |
| Avg Precip (In.) | 3.79 | 3.28 | 4.12 | 3.64 | 4.29 | 4.23 | 4.51 | 4.3 | 3.33 | 2.71 | 3.35 | 3.23 | 44.77 |