| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 65e - Northern Hilly Gulf Coastal Plain |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 38372 - Savannah, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 30 | 39 | 47 | 56 | 64 | 68 | 66 | 59 | 47 | 39 | 31 | 48 |
| Avg Max Temp (°F) | 49 | 54 | 64 | 73 | 80 | 87 | 90 | 90 | 84 | 74 | 62 | 52 | 72 |
| Avg Precip (In.) | 4.97 | 4.55 | 6.03 | 5.24 | 6.32 | 4.54 | 4.48 | 3.08 | 4.08 | 3.42 | 5.65 | 5.89 | 58.28 |