Fort Wayne, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.7 °C (high). Annual precipitation averages 973.8 Millimeters. Fort Wayne is located in USDA Plant Hardiness Zone 6a. 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 | -7.9 °C | 0.3 °C | 62.99 mm |
| February | -6.9 °C | 2.3 °C | 52.32 mm |
| March | -2.3 °C | 8.3 °C | 62.48 mm |
| April | 3.4 °C | 15.8 °C | 95.25 mm |
| May | 9.8 °C | 22.1 °C | 113.54 mm |
| June | 15.3 °C | 27.1 °C | 106.68 mm |
| July | 17 °C | 29.1 °C | 98.81 mm |
| August | 15.8 °C | 27.9 °C | 100.33 mm |
| September | 11.6 °C | 24.8 °C | 74.68 mm |
| October | 5.6 °C | 17.8 °C | 72.39 mm |
| November | 0 °C | 9.7 °C | 74.42 mm |
| December | -4.8 °C | 3.1 °C | 59.94 mm |
| Annual | 4.7 °C | 15.7 °C | 973.83 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 6a : -23.3°C to -20.6°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 |