| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 55a - Clayey High Lime Till Plains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 43324 - Huntsville, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 28 | 38 | 49 | 59 | 62 | 60 | 53 | 42 | 32 | 22 | 40 |
| Avg Max Temp (°F) | 32 | 37 | 48 | 60 | 71 | 80 | 84 | 81 | 75 | 63 | 49 | 37 | 60 |
| Avg Precip (In.) | 2.03 | 1.9 | 2.63 | 3.5 | 3.85 | 4.1 | 4.15 | 3.47 | 2.73 | 2.47 | 3.04 | 2.5 | 36.36 |