Brook Park, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.4 °C (low) to 11.5 °C (high). Annual precipitation averages 806.4 Millimeters. Brook Park is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.3 °C | -6.1 °C | 19.3 mm |
| February | -15.2 °C | -3.1 °C | 21.84 mm |
| March | -8.1 °C | 3.8 °C | 39.62 mm |
| April | -0.9 °C | 11.7 °C | 68.07 mm |
| May | 5.9 °C | 19.2 °C | 94.49 mm |
| June | 11.7 °C | 24.4 °C | 114.05 mm |
| July | 14.3 °C | 26.8 °C | 115.57 mm |
| August | 12.9 °C | 25.8 °C | 103.12 mm |
| September | 8.2 °C | 21.3 °C | 81.53 mm |
| October | 1.6 °C | 13.2 °C | 77.72 mm |
| November | -5.3 °C | 4.2 °C | 41.15 mm |
| December | -12.5 °C | -3.2 °C | 29.97 mm |
| Annual | -0.4 °C | 11.5 °C | 806.43 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |