Fowler, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 16.3 °C (high). Annual precipitation averages 985 Millimeters. Fowler 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 | -8.2 °C | 0.2 °C | 55.88 mm |
| February | -6.6 °C | 2.9 °C | 47.75 mm |
| March | -1.7 °C | 9.4 °C | 66.04 mm |
| April | 4.1 °C | 17.1 °C | 101.09 mm |
| May | 10.6 °C | 23.1 °C | 104.65 mm |
| June | 16 °C | 27.7 °C | 126.75 mm |
| July | 17.6 °C | 28.9 °C | 114.81 mm |
| August | 16.4 °C | 28.2 °C | 85.34 mm |
| September | 12.1 °C | 25.7 °C | 76.45 mm |
| October | 5.9 °C | 18.7 °C | 80.77 mm |
| November | -0.1 °C | 10.2 °C | 69.34 mm |
| December | -5.3 °C | 3.1 °C | 56.13 mm |
| Annual | 5.1 °C | 16.3 °C | 985 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 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 |