Brownlee Park, Michigan has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.9 °C (low) to 14.6 °C (high). Annual precipitation averages 980.2 Millimeters. 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 | -8.3 °C | -0.5 °C | 65.53 mm |
| February | -7.7 °C | 1 °C | 52.58 mm |
| March | -3.4 °C | 7 °C | 60.2 mm |
| April | 2.6 °C | 14.6 °C | 89.92 mm |
| May | 9 °C | 20.9 °C | 103.89 mm |
| June | 14 °C | 26 °C | 102.87 mm |
| July | 15.9 °C | 28.1 °C | 93.47 mm |
| August | 14.9 °C | 27 °C | 100.08 mm |
| September | 10.8 °C | 23.5 °C | 85.34 mm |
| October | 4.8 °C | 16.2 °C | 93.22 mm |
| November | -0.3 °C | 8.7 °C | 72.39 mm |
| December | -5 °C | 2.2 °C | 60.71 mm |
| Annual | 3.9 °C | 14.6 °C | 980.2 mm |
| 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 : -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 |