| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68d - Southern Table Plateaus |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 35055 - Cullman, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 32 | 39 | 46 | 55 | 62 | 66 | 65 | 59 | 47 | 38 | 32 | 48 |
| Avg Max Temp (°F) | 52 | 57 | 66 | 74 | 81 | 87 | 91 | 91 | 85 | 75 | 64 | 55 | 73 |
| Avg Precip (In.) | 5.85 | 5.29 | 6.55 | 4.98 | 5.06 | 4.46 | 4.72 | 3.31 | 4.83 | 3.55 | 4.83 | 5.5 | 58.93 |