Brownlee Park, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 39.1 °F (low) to 58.2 °F (high). Annual precipitation averages 38.6 Inches. Brownlee Park 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 | 17.1 °F | 31.1 °F | 2.58 in. |
| February | 18.1 °F | 33.8 °F | 2.07 in. |
| March | 25.8 °F | 44.6 °F | 2.37 in. |
| April | 36.6 °F | 58.2 °F | 3.54 in. |
| May | 48.2 °F | 69.7 °F | 4.09 in. |
| June | 57.2 °F | 78.8 °F | 4.05 in. |
| July | 60.7 °F | 82.6 °F | 3.68 in. |
| August | 58.9 °F | 80.6 °F | 3.94 in. |
| September | 51.5 °F | 74.3 °F | 3.36 in. |
| October | 40.7 °F | 61.2 °F | 3.67 in. |
| November | 31.5 °F | 47.6 °F | 2.85 in. |
| December | 23.0 °F | 35.9 °F | 2.39 in. |
| Annual | 39.1 °F | 58.2 °F | 38.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 |