Madison, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.1 °F (low) to 65.6 °F (high). Annual precipitation averages 49.1 Inches. Madison is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.2 °F | 40.3 °F | 3.53 in. |
| February | 26.4 °F | 44.5 °F | 3.31 in. |
| March | 33.7 °F | 54.9 °F | 4.25 in. |
| April | 43.3 °F | 66.9 °F | 4.99 in. |
| May | 53.6 °F | 75.5 °F | 5.34 in. |
| June | 61.9 °F | 83.1 °F | 4.89 in. |
| July | 66.2 °F | 86.3 °F | 4.34 in. |
| August | 64.9 °F | 86.0 °F | 3.95 in. |
| September | 57.4 °F | 80.1 °F | 3.28 in. |
| October | 45.6 °F | 68.8 °F | 3.54 in. |
| November | 35.2 °F | 55.7 °F | 3.51 in. |
| December | 28.5 °F | 44.6 °F | 4.19 in. |
| Annual | 45.1 °F | 65.6 °F | 49.12 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |