| 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. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68b - Sequatchie Valley |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 37380 - South Pittsburg, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 31 | 38 | 45 | 54 | 63 | 67 | 66 | 60 | 46 | 38 | 31 | 47 |
| Avg Max Temp (°F) | 48 | 53 | 63 | 72 | 79 | 86 | 89 | 89 | 83 | 72 | 62 | 52 | 71 |
| Avg Precip (In.) | 5.69 | 5.04 | 6.35 | 4.17 | 4.28 | 4.32 | 4.67 | 3.44 | 4.8 | 3.37 | 4.76 | 5.42 | 56.32 |