| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°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: | Rare Over 86°F |
Annual Climate Data for ZIP Code 45331 - Greenville, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 18 | 28 | 38 | 48 | 58 | 61 | 59 | 51 | 39 | 31 | 21 | 39 |
| Avg Max Temp (°F) | 33 | 37 | 48 | 60 | 71 | 80 | 84 | 82 | 76 | 64 | 50 | 38 | 60 |
| Avg Precip (In.) | 2.24 | 2.11 | 2.93 | 3.57 | 4.1 | 4.13 | 4.12 | 3.37 | 2.58 | 2.71 | 3.11 | 2.74 | 37.72 |