| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68e - Dissected Plateau |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 35057 - Cullman, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 32 | 39 | 46 | 55 | 63 | 67 | 65 | 59 | 47 | 38 | 32 | 47 |
| Avg Max Temp (°F) | 52 | 57 | 66 | 74 | 81 | 87 | 91 | 90 | 85 | 75 | 64 | 55 | 73 |
| Avg Precip (In.) | 5.89 | 5.25 | 6.55 | 4.99 | 5.04 | 4.47 | 4.71 | 3.32 | 4.74 | 3.53 | 4.84 | 5.46 | 58.78 |