Buhl, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2 °C (low) to 9.6 °C (high). Annual precipitation averages 736.6 Millimeters. Buhl is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -19.1 °C | -8.3 °C | 23.88 mm |
| February | -17.4 °C | -4.9 °C | 19.81 mm |
| March | -10.1 °C | 2.3 °C | 29.21 mm |
| April | -2.6 °C | 9.9 °C | 52.32 mm |
| May | 4.4 °C | 17.6 °C | 80.52 mm |
| June | 10.2 °C | 22.7 °C | 109.98 mm |
| July | 12.8 °C | 25.2 °C | 109.22 mm |
| August | 11.5 °C | 24.3 °C | 84.07 mm |
| September | 7.2 °C | 19.3 °C | 86.61 mm |
| October | 0.8 °C | 11.1 °C | 70.87 mm |
| November | -6.9 °C | 1.6 °C | 39.88 mm |
| December | -14.3 °C | -5.6 °C | 30.23 mm |
| Annual | -2 °C | 9.6 °C | 736.6 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |