Port Clinton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.6 °F (low) to 58.8 °F (high). Annual precipitation averages 36.3 Inches. Port Clinton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.8 °F | 33.0 °F | 2.34 in. |
| February | 21.1 °F | 35.6 °F | 1.97 in. |
| March | 28.9 °F | 44.4 °F | 2.4 in. |
| April | 39.7 °F | 57.3 °F | 3.74 in. |
| May | 51.9 °F | 68.6 °F | 3.57 in. |
| June | 62.4 °F | 78.5 °F | 3.76 in. |
| July | 66.6 °F | 82.6 °F | 3.44 in. |
| August | 65.3 °F | 80.6 °F | 3.48 in. |
| September | 58.7 °F | 74.6 °F | 3.29 in. |
| October | 46.7 °F | 63.2 °F | 3.08 in. |
| November | 35.9 °F | 49.3 °F | 2.76 in. |
| December | 26.4 °F | 38.1 °F | 2.44 in. |
| Annual | 43.6 °F | 58.8 °F | 36.27 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |