| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°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: | 55b - Loamy High Lime Till Plains |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 45335 - Jamestown, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 22 | 31 | 40 | 50 | 59 | 63 | 60 | 53 | 42 | 33 | 24 | 41 |
| Avg Max Temp (°F) | 35 | 40 | 51 | 62 | 72 | 80 | 84 | 82 | 76 | 65 | 52 | 40 | 62 |
| Avg Precip (In.) | 2.59 | 2.35 | 3.15 | 3.76 | 4.52 | 4.16 | 4.1 | 3.73 | 2.87 | 2.72 | 3.26 | 2.92 | 40.14 |