French Lick, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 18.7 °C (high). Annual precipitation averages 1277.6 Millimeters. French Lick 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.7 °C | 4.7 °C | 92.71 mm |
| February | -4.1 °C | 7.4 °C | 86.87 mm |
| March | 0 °C | 12.8 °C | 115.82 mm |
| April | 5.6 °C | 19.3 °C | 137.92 mm |
| May | 11.3 °C | 24.3 °C | 143.76 mm |
| June | 16.3 °C | 28.5 °C | 129.03 mm |
| July | 17.9 °C | 30.3 °C | 109.22 mm |
| August | 16.8 °C | 29.9 °C | 73.66 mm |
| September | 12.6 °C | 26.9 °C | 91.95 mm |
| October | 5.8 °C | 20.4 °C | 93.22 mm |
| November | 0.5 °C | 13.2 °C | 104.65 mm |
| December | -3.3 °C | 7 °C | 98.81 mm |
| Annual | 6.1 °C | 18.7 °C | 1277.62 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 |