| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 67d - Northern Dissected Ridges and Knobs | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 26764 - Terra Alta, WV | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 27 | 36 | 46 | 54 | 59 | 57 | 51 | 40 | 31 | 23 | 38 |
| Avg Max Temp (°F) | 34 | 38 | 47 | 59 | 67 | 75 | 78 | 77 | 70 | 60 | 49 | 39 | 58 |
| Avg Precip (In.) | 4.49 | 3.97 | 4.76 | 4.7 | 4.94 | 5.11 | 5.82 | 4.59 | 3.87 | 3.43 | 4.29 | 4.52 | 54.49 |