| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°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 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 70f - Ohio/Kentucky Carboniferous Plateau |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 45654 - New Plymouth, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 28 | 37 | 47 | 56 | 61 | 59 | 52 | 39 | 31 | 23 | 39 |
| Avg Max Temp (°F) | 37 | 41 | 52 | 63 | 73 | 81 | 84 | 83 | 77 | 66 | 53 | 42 | 63 |
| Avg Precip (In.) | 2.77 | 2.61 | 3.38 | 3.4 | 4.31 | 3.98 | 4.24 | 4.01 | 2.98 | 2.61 | 3.08 | 3.05 | 40.4 |