Dowagiac, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.1 °F (low) to 58.4 °F (high). Annual precipitation averages 40.6 Inches. 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 | 17.6 °F | 31.4 °F | 2.93 in. |
| February | 19.3 °F | 34.4 °F | 2.25 in. |
| March | 27.1 °F | 45.0 °F | 2.35 in. |
| April | 37.7 °F | 57.8 °F | 3.55 in. |
| May | 48.8 °F | 69.2 °F | 4.07 in. |
| June | 58.0 °F | 78.6 °F | 4.14 in. |
| July | 61.6 °F | 82.6 °F | 3.96 in. |
| August | 60.3 °F | 80.9 °F | 4.2 in. |
| September | 52.7 °F | 74.7 °F | 3.43 in. |
| October | 41.7 °F | 61.7 °F | 4.12 in. |
| November | 32.3 °F | 47.8 °F | 2.98 in. |
| December | 23.7 °F | 36.3 °F | 2.61 in. |
| Annual | 40.1 °F | 58.4 °F | 40.59 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |