La Prairie, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.4 °C (low) to 10.3 °C (high). Annual precipitation averages 731.8 Millimeters. La Prairie is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -18.8 °C | -7.8 °C | 23.11 mm |
| February | -17 °C | -4.1 °C | 20.32 mm |
| March | -9.6 °C | 3.1 °C | 31.24 mm |
| April | -1.9 °C | 10.8 °C | 52.32 mm |
| May | 5.1 °C | 18.3 °C | 82.8 mm |
| June | 10.8 °C | 23.3 °C | 114.81 mm |
| July | 13.5 °C | 25.9 °C | 105.16 mm |
| August | 12.3 °C | 24.9 °C | 84.58 mm |
| September | 7.8 °C | 20.1 °C | 82.55 mm |
| October | 1.3 °C | 11.8 °C | 69.34 mm |
| November | -6.1 °C | 2.4 °C | 37.59 mm |
| December | -14 °C | -4.9 °C | 27.94 mm |
| Annual | -1.4 °C | 10.3 °C | 731.76 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |