| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 65l - Vidalia Upland |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 30401 - Swainsboro, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 38 | 44 | 50 | 59 | 67 | 70 | 69 | 65 | 53 | 44 | 38 | 53 |
| Avg Max Temp (°F) | 59 | 63 | 71 | 78 | 84 | 90 | 93 | 91 | 87 | 78 | 70 | 62 | 77 |
| Avg Precip (In.) | 4.69 | 3.98 | 4.71 | 3.17 | 2.61 | 4.25 | 4.68 | 5.01 | 3.55 | 2.72 | 2.78 | 3.39 | 45.54 |