| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| 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: | 45a - Southern Inner Piedmont | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 30040 - Cumming, GA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 31 | 38 | 45 | 54 | 62 | 66 | 65 | 59 | 47 | 39 | 32 | 47 |
| Avg Max Temp (°F) | 49 | 54 | 62 | 70 | 77 | 84 | 87 | 86 | 80 | 71 | 61 | 52 | 69 |
| Avg Precip (In.) | 6.11 | 5.1 | 6.14 | 4.43 | 4.46 | 3.72 | 4.31 | 4.33 | 4.19 | 3.82 | 4.36 | 4.77 | 55.75 |