| 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 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Cfb - Oceanic Climate | |
| Ecoregion: | 66d - Southern Crystalline Ridges and Mountains | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 37687 - Roan Mountain, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 31 | 38 | 46 | 54 | 58 | 57 | 51 | 39 | 31 | 25 | 40 |
| Avg Max Temp (°F) | 44 | 48 | 56 | 64 | 72 | 78 | 81 | 80 | 76 | 66 | 56 | 48 | 64 |
| Avg Precip (In.) | 4.36 | 4.3 | 5.2 | 4.41 | 5.34 | 4.84 | 4.75 | 4.41 | 3.89 | 3.05 | 3.47 | 3.78 | 51.81 |