| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F | |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 65c - Sand Hills | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 30814 - Harlem, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 33 | 40 | 47 | 56 | 64 | 68 | 67 | 61 | 49 | 40 | 33 | 49 |
| Avg Max Temp (°F) | 55 | 59 | 67 | 75 | 82 | 89 | 92 | 90 | 85 | 76 | 67 | 57 | 74 |
| Avg Precip (In.) | 4.99 | 4.26 | 4.9 | 3.28 | 3.37 | 4.01 | 4.16 | 4.32 | 3.6 | 3.33 | 3.15 | 3.66 | 47.04 |