Zaleski, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.2 °F (low) to 64.7 °F (high). Annual precipitation averages 44.2 Inches. Zaleski is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.6 °F | 39.5 °F | 3.4 in. |
| February | 23.3 °F | 43.3 °F | 3.03 in. |
| March | 30.4 °F | 53.2 °F | 4.03 in. |
| April | 40.5 °F | 66.5 °F | 4.12 in. |
| May | 50.9 °F | 75.0 °F | 4.5 in. |
| June | 59.5 °F | 82.7 °F | 4.34 in. |
| July | 63.4 °F | 85.9 °F | 4.44 in. |
| August | 61.6 °F | 84.9 °F | 3.38 in. |
| September | 54.1 °F | 79.1 °F | 3.41 in. |
| October | 41.9 °F | 67.2 °F | 3.11 in. |
| November | 32.4 °F | 54.7 °F | 3.08 in. |
| December | 26.5 °F | 43.8 °F | 3.31 in. |
| Annual | 42.2 °F | 64.7 °F | 44.15 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |