| 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. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70b - Monongahela Transition Zone |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 45769 - Pomeroy, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 30 | 38 | 48 | 57 | 62 | 60 | 53 | 41 | 32 | 25 | 41 |
| Avg Max Temp (°F) | 39 | 44 | 55 | 65 | 75 | 82 | 85 | 84 | 78 | 67 | 55 | 44 | 64 |
| Avg Precip (In.) | 3.25 | 2.94 | 3.66 | 3.33 | 4.1 | 4.01 | 4.43 | 3.73 | 2.91 | 2.61 | 3.1 | 3.13 | 41.2 |