East Sparta, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.1 °C (low) to 16.1 °C (high). Annual precipitation averages 1073.1 Millimeters. East Sparta 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 | -6.7 °C | 1.7 °C | 78.23 mm |
| February | -6.1 °C | 3.4 °C | 60.71 mm |
| March | -1.8 °C | 8.8 °C | 83.06 mm |
| April | 4 °C | 16.4 °C | 93.47 mm |
| May | 9.8 °C | 22.1 °C | 105.16 mm |
| June | 14.7 °C | 26.6 °C | 124.71 mm |
| July | 16.9 °C | 28.6 °C | 113.28 mm |
| August | 15.9 °C | 27.9 °C | 97.28 mm |
| September | 12 °C | 24.6 °C | 84.58 mm |
| October | 5.8 °C | 17.8 °C | 83.31 mm |
| November | 0.6 °C | 10.6 °C | 74.17 mm |
| December | -3.6 °C | 4.4 °C | 75.18 mm |
| Annual | 5.1 °C | 16.1 °C | 1073.14 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |