| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 65d - Southern Hilly Gulf Coastal Plain |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 36081 - Troy, AL | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 38 | 45 | 50 | 59 | 66 | 70 | 70 | 65 | 53 | 44 | 38 | 53 |
| Avg Max Temp (°F) | 57 | 62 | 69 | 76 | 83 | 89 | 91 | 90 | 86 | 77 | 68 | 60 | 76 |
| Avg Precip (In.) | 5.25 | 4.95 | 6.58 | 4.22 | 3.8 | 4.71 | 5.67 | 3.72 | 3.74 | 2.78 | 4.44 | 4.5 | 54.34 |