Monroeville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 15.4 °C (high). Annual precipitation averages 1017.8 Millimeters. Monroeville 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.4 °C | 0.8 °C | 68.58 mm |
| February | -6.7 °C | 2.3 °C | 57.91 mm |
| March | -2.2 °C | 7.7 °C | 72.64 mm |
| April | 3.4 °C | 15.1 °C | 100.33 mm |
| May | 9.9 °C | 21.4 °C | 100.08 mm |
| June | 15.3 °C | 26.3 °C | 107.44 mm |
| July | 17.3 °C | 28.4 °C | 103.38 mm |
| August | 16.2 °C | 27.4 °C | 90.93 mm |
| September | 12.2 °C | 24.2 °C | 91.44 mm |
| October | 6.1 °C | 17.4 °C | 83.06 mm |
| November | 0.8 °C | 9.9 °C | 72.64 mm |
| December | -4.1 °C | 3.6 °C | 69.34 mm |
| Annual | 5.1 °C | 15.4 °C | 1017.77 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |