| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| 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: | 70d - Knobs-Lower Scioto Dissected Plateau |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 45661 - Piketon, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 22 | 30 | 39 | 50 | 59 | 63 | 61 | 54 | 42 | 33 | 24 | 41 |
| Avg Max Temp (°F) | 38 | 43 | 53 | 64 | 74 | 81 | 85 | 84 | 77 | 66 | 54 | 43 | 64 |
| Avg Precip (In.) | 2.85 | 2.65 | 3.68 | 3.46 | 4.25 | 3.91 | 3.94 | 4.08 | 2.99 | 2.55 | 3.09 | 3.12 | 40.57 |