| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Jan. 21 - Jan. 31 |
| Average Last Frost Date: | Jan. 21 - Jan. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 75f - Sea Island Flatwoods |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 31324 - Richmond Hill, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 39 | 46 | 51 | 60 | 66 | 70 | 70 | 66 | 55 | 45 | 39 | 54 |
| Avg Max Temp (°F) | 62 | 65 | 72 | 78 | 84 | 88 | 91 | 90 | 86 | 79 | 71 | 64 | 77 |
| Avg Precip (In.) | 4.16 | 3.12 | 3.81 | 3.11 | 3.46 | 5.36 | 5.78 | 6.77 | 4.93 | 3 | 2.54 | 2.96 | 48.99 |