| 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 44044 - Grafton, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 28 | 37 | 47 | 57 | 61 | 60 | 53 | 42 | 33 | 23 | 40 |
| Avg Max Temp (°F) | 33 | 37 | 47 | 59 | 71 | 79 | 83 | 81 | 75 | 63 | 50 | 38 | 60 |
| Avg Precip (In.) | 2.33 | 2.12 | 2.72 | 3.27 | 3.56 | 4.02 | 3.71 | 3.7 | 3.4 | 2.54 | 3.12 | 2.94 | 37.42 |