| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°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: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68a - Cumberland Plateau |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 37375 - Sewanee, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 30 | 38 | 46 | 54 | 62 | 66 | 65 | 59 | 47 | 38 | 30 | 47 |
| Avg Max Temp (°F) | 45 | 50 | 58 | 68 | 75 | 82 | 85 | 85 | 79 | 69 | 58 | 49 | 67 |
| Avg Precip (In.) | 5.97 | 5.03 | 6.85 | 4.97 | 5.46 | 4.7 | 5.41 | 4.01 | 4.89 | 4.28 | 6.04 | 5.87 | 63.48 |