| 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. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 44090 - Wellington, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 18 | 27 | 36 | 47 | 56 | 60 | 58 | 51 | 40 | 32 | 22 | 39 |
| Avg Max Temp (°F) | 32 | 36 | 46 | 58 | 70 | 79 | 83 | 81 | 74 | 63 | 49 | 37 | 59 |
| Avg Precip (In.) | 2.29 | 2.06 | 2.73 | 3.28 | 3.68 | 3.95 | 3.81 | 3.61 | 3.31 | 2.42 | 3.09 | 2.8 | 37.02 |