Florence, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 18.7 °C (high). Annual precipitation averages 1186.4 Millimeters. Florence 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 | -4.7 °C | 4.9 °C | 85.34 mm |
| February | -3.6 °C | 7.3 °C | 76.96 mm |
| March | 0.4 °C | 12.7 °C | 102.11 mm |
| April | 5.9 °C | 19.5 °C | 117.6 mm |
| May | 11.6 °C | 24.3 °C | 133.6 mm |
| June | 16.3 °C | 28.4 °C | 121.92 mm |
| July | 18.7 °C | 30.3 °C | 108.46 mm |
| August | 18.1 °C | 29.8 °C | 89.15 mm |
| September | 13.8 °C | 26.7 °C | 83.31 mm |
| October | 7.2 °C | 20.3 °C | 84.58 mm |
| November | 1.3 °C | 13.3 °C | 87.12 mm |
| December | -2.3 °C | 7.4 °C | 96.27 mm |
| Annual | 6.9 °C | 18.7 °C | 1186.42 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |