Mooresville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 17.1 °C (high). Annual precipitation averages 1154.7 Millimeters. Mooresville is located in USDA Plant Hardiness Zone 6b. 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 | -6.4 °C | 2.2 °C | 78.74 mm |
| February | -4.9 °C | 4.7 °C | 66.04 mm |
| March | -0.2 °C | 10.6 °C | 87.63 mm |
| April | 5.8 °C | 17.6 °C | 121.67 mm |
| May | 11.8 °C | 23.1 °C | 128.02 mm |
| June | 16.9 °C | 27.8 °C | 133.1 mm |
| July | 18.7 °C | 29.5 °C | 116.33 mm |
| August | 17.7 °C | 29 °C | 82.3 mm |
| September | 13.5 °C | 25.9 °C | 87.38 mm |
| October | 6.9 °C | 19.1 °C | 86.11 mm |
| November | 1.1 °C | 11.2 °C | 87.88 mm |
| December | -3.4 °C | 4.8 °C | 79.5 mm |
| Annual | 6.5 °C | 17.1 °C | 1154.7 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |