Pleasant Plain, 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 63.6 °F (high). Annual precipitation averages 44.4 Inches. Pleasant Plain is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.1 °F | 38.3 °F | 3.27 in. |
| February | 23.9 °F | 42.1 °F | 2.79 in. |
| March | 32.1 °F | 52.0 °F | 3.95 in. |
| April | 42.1 °F | 64.4 °F | 4.57 in. |
| May | 53.0 °F | 73.7 °F | 4.86 in. |
| June | 61.7 °F | 81.9 °F | 4.63 in. |
| July | 64.8 °F | 85.1 °F | 4.18 in. |
| August | 62.7 °F | 84.4 °F | 3.47 in. |
| September | 55.5 °F | 78.7 °F | 2.97 in. |
| October | 44.1 °F | 66.7 °F | 3.06 in. |
| November | 34.1 °F | 53.3 °F | 3.15 in. |
| December | 27.1 °F | 42.4 °F | 3.45 in. |
| Annual | 43.6 °F | 63.6 °F | 44.35 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |