Sandusky, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.9 °F (low) to 58.4 °F (high). Annual precipitation averages 36.2 Inches. Sandusky 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 | 20.2 °F | 33.0 °F | 2.5 in. |
| February | 21.5 °F | 35.4 °F | 2.11 in. |
| March | 29.1 °F | 44.2 °F | 2.68 in. |
| April | 40.2 °F | 56.4 °F | 3.77 in. |
| May | 52.3 °F | 67.9 °F | 3.28 in. |
| June | 62.6 °F | 77.5 °F | 3.88 in. |
| July | 66.8 °F | 81.7 °F | 3.38 in. |
| August | 65.7 °F | 79.8 °F | 3.24 in. |
| September | 58.8 °F | 74.1 °F | 2.85 in. |
| October | 47.0 °F | 62.9 °F | 3.19 in. |
| November | 36.1 °F | 49.4 °F | 2.79 in. |
| December | 26.6 °F | 37.9 °F | 2.57 in. |
| Annual | 43.9 °F | 58.4 °F | 36.24 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 |