Brownsville, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.3 °C (low) to 13.7 °C (high). Annual precipitation averages 960.6 Millimeters. Brownsville is located in USDA Plant Hardiness Zone 5a. 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 | -12.4 °C | -3.3 °C | 30.73 mm |
| February | -10.4 °C | -0.7 °C | 29.46 mm |
| March | -4.1 °C | 6.1 °C | 52.32 mm |
| April | 2.8 °C | 14.2 °C | 100.58 mm |
| May | 9.3 °C | 21.1 °C | 127.76 mm |
| June | 15.1 °C | 26.3 °C | 149.35 mm |
| July | 17.3 °C | 28.3 °C | 104.65 mm |
| August | 16.1 °C | 27.3 °C | 114.3 mm |
| September | 11.5 °C | 23.2 °C | 98.55 mm |
| October | 4.7 °C | 15.7 °C | 71.63 mm |
| November | -1.9 °C | 6.9 °C | 45.72 mm |
| December | -8.4 °C | -0.4 °C | 35.56 mm |
| Annual | 3.3 °C | 13.7 °C | 960.61 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |