| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F 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. 1 - Apr. 10 |
| 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 35078 - Harpersville, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 34 | 41 | 48 | 56 | 64 | 68 | 67 | 61 | 48 | 40 | 34 | 50 |
| Avg Max Temp (°F) | 56 | 61 | 69 | 77 | 83 | 89 | 92 | 91 | 86 | 77 | 67 | 59 | 76 |
| Avg Precip (In.) | 5.93 | 5.03 | 6.59 | 4.91 | 4.49 | 4.16 | 4.93 | 3.63 | 4.18 | 3.18 | 4.46 | 4.76 | 56.26 |