| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F 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: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 67f - Southern Limestone/Dolomite Valleys and Low Rolling Hills |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 35235 - Birmingham, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 34 | 42 | 48 | 57 | 65 | 69 | 68 | 62 | 50 | 41 | 34 | 50 |
| Avg Max Temp (°F) | 52 | 57 | 66 | 73 | 80 | 87 | 90 | 90 | 84 | 74 | 64 | 55 | 73 |
| Avg Precip (In.) | 5.69 | 4.56 | 6.38 | 4.83 | 4.68 | 4.1 | 5.14 | 3.41 | 4.36 | 3.34 | 4.74 | 4.72 | 55.94 |