Mechanicsburg, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.3 °F (low) to 61.4 °F (high). Annual precipitation averages 42.3 Inches. 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 | 19.1 °F | 34.6 °F | 3.01 in. |
| February | 21.3 °F | 38.4 °F | 2.33 in. |
| March | 29.2 °F | 48.8 °F | 3.15 in. |
| April | 39.5 °F | 62.1 °F | 4.19 in. |
| May | 50.8 °F | 72.8 °F | 4.56 in. |
| June | 60.1 °F | 81.1 °F | 4.66 in. |
| July | 62.7 °F | 83.8 °F | 4.74 in. |
| August | 60.4 °F | 82.6 °F | 3.56 in. |
| September | 53.5 °F | 77.5 °F | 3.29 in. |
| October | 42.2 °F | 65.2 °F | 2.79 in. |
| November | 32.1 °F | 50.7 °F | 3.07 in. |
| December | 24.8 °F | 39.3 °F | 2.92 in. |
| Annual | 41.3 °F | 61.4 °F | 42.27 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 6a : -10°F to -5°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 |