| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 43783 - Somerset, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 19 | 27 | 36 | 47 | 56 | 60 | 58 | 51 | 38 | 30 | 22 | 38 |
| Avg Max Temp (°F) | 36 | 41 | 51 | 63 | 73 | 81 | 84 | 82 | 76 | 65 | 52 | 41 | 62 |
| Avg Precip (In.) | 2.77 | 2.5 | 3.21 | 3.57 | 4.29 | 4.25 | 4.44 | 4 | 2.84 | 2.54 | 3.22 | 3.01 | 40.64 |