| 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: | 67f - Southern Limestone/Dolomite Valleys and Low Rolling Hills |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 35961 - Collinsville, 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 | 66 | 60 | 47 | 39 | 32 | 48 |
| Avg Max Temp (°F) | 49 | 54 | 63 | 71 | 79 | 86 | 89 | 89 | 83 | 73 | 62 | 53 | 71 |
| Avg Precip (In.) | 5.54 | 5.18 | 6.17 | 4.77 | 4.48 | 3.93 | 4.45 | 3.39 | 4.22 | 3.13 | 4.65 | 5.06 | 54.99 |