Browns Valley, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.6 °C (low) to 12.2 °C (high). Annual precipitation averages 657.9 Millimeters. Browns Valley is located in USDA Plant Hardiness Zone 4b. 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 | -16.2 °C | -5.9 °C | 21.34 mm |
| February | -14.3 °C | -3.5 °C | 20.83 mm |
| March | -7.2 °C | 3.6 °C | 33.02 mm |
| April | 0 °C | 12.5 °C | 63.75 mm |
| May | 7.4 °C | 20.2 °C | 74.17 mm |
| June | 13.6 °C | 25.6 °C | 107.7 mm |
| July | 15.8 °C | 28 °C | 100.08 mm |
| August | 14.2 °C | 26.9 °C | 68.83 mm |
| September | 9.1 °C | 22.7 °C | 60.96 mm |
| October | 1.9 °C | 14.3 °C | 60.96 mm |
| November | -5.4 °C | 5.1 °C | 24.89 mm |
| December | -12.3 °C | -2.8 °C | 21.34 mm |
| Annual | 0.6 °C | 12.2 °C | 657.87 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 4b : -31.7°C to -28.9°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 |