| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 57d - Marblehead Drift/Limestone Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 43438 - Kelleys Island, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 21 | 29 | 39 | 51 | 61 | 66 | 65 | 58 | 46 | 36 | 25 | 43 |
| Avg Max Temp (°F) | 32 | 34 | 44 | 55 | 67 | 77 | 82 | 80 | 73 | 61 | 49 | 37 | 58 |
| Avg Precip (In.) | 1.75 | 1.58 | 2.4 | 3.04 | 3.36 | 3.76 | 3.18 | 3.49 | 3.12 | 2.42 | 2.65 | 2.32 | 33.05 |