Francesville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.6 °C (low) to 15.6 °C (high). Annual precipitation averages 1015 Millimeters. Francesville is located in USDA Plant Hardiness Zone 5b. 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 | -8.7 °C | 0 °C | 62.48 mm |
| February | -7.1 °C | 2.4 °C | 52.58 mm |
| March | -2.2 °C | 8.7 °C | 64.77 mm |
| April | 3.6 °C | 15.9 °C | 94.74 mm |
| May | 10.1 °C | 22.1 °C | 103.89 mm |
| June | 15.4 °C | 27.1 °C | 118.11 mm |
| July | 16.9 °C | 28.5 °C | 123.95 mm |
| August | 15.8 °C | 27.7 °C | 105.41 mm |
| September | 11.6 °C | 24.9 °C | 82.04 mm |
| October | 5.3 °C | 17.9 °C | 81.03 mm |
| November | -0.3 °C | 9.6 °C | 69.09 mm |
| December | -5.4 °C | 2.9 °C | 56.9 mm |
| Annual | 4.6 °C | 15.6 °C | 1014.99 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |