| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F | |
| 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: | 45b - Southern Outer Piedmont | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 30034 - Decatur, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 34 | 41 | 48 | 57 | 65 | 69 | 68 | 62 | 50 | 41 | 34 | 50 |
| Avg Max Temp (°F) | 51 | 56 | 65 | 73 | 80 | 86 | 89 | 88 | 82 | 73 | 64 | 54 | 72 |
| Avg Precip (In.) | 5.37 | 4.79 | 5.6 | 3.92 | 4.08 | 3.78 | 4.7 | 3.91 | 3.72 | 3.23 | 4.03 | 4.04 | 51.19 |