North Madison, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 42.9 °F (low) to 56.9 °F (high). Annual precipitation averages 41.9 Inches. North Madison 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 | 21.2 °F | 34.4 °F | 3.05 in. |
| February | 21.3 °F | 35.3 °F | 2.22 in. |
| March | 27.9 °F | 42.0 °F | 2.83 in. |
| April | 39.0 °F | 54.7 °F | 3.71 in. |
| May | 50.2 °F | 65.3 °F | 3.58 in. |
| June | 59.8 °F | 74.1 °F | 3.83 in. |
| July | 64.5 °F | 78.1 °F | 3.97 in. |
| August | 63.3 °F | 77.1 °F | 3.56 in. |
| September | 56.7 °F | 71.7 °F | 4.24 in. |
| October | 46.3 °F | 60.8 °F | 3.87 in. |
| November | 36.4 °F | 49.8 °F | 3.48 in. |
| December | 27.9 °F | 39.3 °F | 3.52 in. |
| Annual | 42.9 °F | 56.9 °F | 41.86 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |