Laporte, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 9.8 °C (high). Annual precipitation averages 690.1 Millimeters. Laporte 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 | -18.7 °C | -8 °C | 17.78 mm |
| February | -17.2 °C | -4.8 °C | 16 mm |
| March | -9.4 °C | 2.3 °C | 29.97 mm |
| April | -1.7 °C | 10.2 °C | 50.04 mm |
| May | 5.6 °C | 17.5 °C | 82.8 mm |
| June | 11.5 °C | 22.6 °C | 110.49 mm |
| July | 14.2 °C | 25.3 °C | 103.38 mm |
| August | 12.7 °C | 24.4 °C | 79.5 mm |
| September | 8.1 °C | 19.4 °C | 77.47 mm |
| October | 1.3 °C | 11.2 °C | 66.8 mm |
| November | -5.9 °C | 2.3 °C | 31.24 mm |
| December | -13.8 °C | -5.1 °C | 24.64 mm |
| Annual | -1.1 °C | 9.8 °C | 690.11 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 |