New Springfield, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 38.7 °F (low) to 59.8 °F (high). Annual precipitation averages 41.1 Inches. New Springfield is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.4 °F | 34.2 °F | 2.98 in. |
| February | 18.2 °F | 37.3 °F | 2.29 in. |
| March | 26.2 °F | 46.8 °F | 3.11 in. |
| April | 36.9 °F | 60.0 °F | 3.79 in. |
| May | 46.7 °F | 70.6 °F | 3.85 in. |
| June | 55.7 °F | 78.8 °F | 4.34 in. |
| July | 59.4 °F | 82.4 °F | 4.39 in. |
| August | 57.8 °F | 81.2 °F | 3.49 in. |
| September | 50.8 °F | 75.3 °F | 3.79 in. |
| October | 40.0 °F | 62.6 °F | 3.18 in. |
| November | 31.5 °F | 49.7 °F | 2.89 in. |
| December | 23.7 °F | 39.1 °F | 2.96 in. |
| Annual | 38.7 °F | 59.8 °F | 41.06 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Dfb - Humid Continental Mild Summer, Wet All Year |