Dowagiac, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 14.7 °C (high). Annual precipitation averages 1031 Millimeters. Dowagiac is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | -0.3 °C | 74.42 mm |
| February | -7.1 °C | 1.3 °C | 57.15 mm |
| March | -2.7 °C | 7.2 °C | 59.69 mm |
| April | 3.2 °C | 14.3 °C | 90.17 mm |
| May | 9.3 °C | 20.7 °C | 103.38 mm |
| June | 14.4 °C | 25.9 °C | 105.16 mm |
| July | 16.4 °C | 28.1 °C | 100.58 mm |
| August | 15.7 °C | 27.2 °C | 106.68 mm |
| September | 11.5 °C | 23.7 °C | 87.12 mm |
| October | 5.4 °C | 16.5 °C | 104.65 mm |
| November | 0.2 °C | 8.8 °C | 75.69 mm |
| December | -4.6 °C | 2.4 °C | 66.29 mm |
| Annual | 4.5 °C | 14.7 °C | 1030.98 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |