| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F 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. 11 - Apr. 20 |
| 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 43452 - Port Clinton, OH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 20 | 29 | 39 | 51 | 61 | 65 | 64 | 56 | 45 | 35 | 25 | 42 |
| Avg Max Temp (°F) | 32 | 35 | 44 | 56 | 68 | 78 | 82 | 81 | 74 | 62 | 49 | 37 | 58 |
| Avg Precip (In.) | 1.86 | 1.66 | 2.49 | 3.11 | 3.39 | 3.91 | 3.23 | 3.6 | 3.12 | 2.41 | 2.79 | 2.49 | 34.06 |