Mechanicsburg, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.2 °C (low) to 16.3 °C (high). Annual precipitation averages 1073.7 Millimeters. Mechanicsburg is located in USDA Plant Hardiness Zone 6a. 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 | -7.2 °C | 1.4 °C | 76.45 mm |
| February | -5.9 °C | 3.6 °C | 59.18 mm |
| March | -1.6 °C | 9.3 °C | 80.01 mm |
| April | 4.2 °C | 16.7 °C | 106.43 mm |
| May | 10.4 °C | 22.7 °C | 115.82 mm |
| June | 15.6 °C | 27.3 °C | 118.36 mm |
| July | 17.1 °C | 28.8 °C | 120.4 mm |
| August | 15.8 °C | 28.1 °C | 90.42 mm |
| September | 11.9 °C | 25.3 °C | 83.57 mm |
| October | 5.7 °C | 18.4 °C | 70.87 mm |
| November | 0.1 °C | 10.4 °C | 77.98 mm |
| December | -4 °C | 4.1 °C | 74.17 mm |
| Annual | 5.2 °C | 16.3 °C | 1073.66 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 6a : -23.3°C to -20.6°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 |