| 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 7b: 5F to 10F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Mar. 21 - Mar. 31 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 67g - Southern Shale Valleys |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 35954 - Attalla, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 33 | 40 | 47 | 56 | 64 | 69 | 68 | 62 | 49 | 40 | 33 | 49 |
| Avg Max Temp (°F) | 51 | 56 | 65 | 73 | 80 | 87 | 90 | 90 | 84 | 74 | 64 | 54 | 72 |
| Avg Precip (In.) | 5.72 | 4.89 | 6.4 | 5.06 | 4.5 | 4.15 | 4.49 | 3.54 | 4.13 | 2.98 | 4.53 | 4.86 | 55.26 |