Lastrup, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.2 °C (low) to 11.2 °C (high). Annual precipitation averages 748.8 Millimeters. Lastrup is located in USDA Plant Hardiness Zone 4a. 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 | -17.7 °C | -6.8 °C | 17.78 mm |
| February | -15.8 °C | -3.7 °C | 19.81 mm |
| March | -8.4 °C | 3.4 °C | 36.07 mm |
| April | -0.8 °C | 11.5 °C | 62.48 mm |
| May | 6.6 °C | 19.1 °C | 90.42 mm |
| June | 12.4 °C | 24.3 °C | 114.55 mm |
| July | 14.8 °C | 26.9 °C | 106.68 mm |
| August | 13.4 °C | 25.7 °C | 96.77 mm |
| September | 8.9 °C | 21.2 °C | 73.91 mm |
| October | 1.9 °C | 12.9 °C | 71.88 mm |
| November | -5.3 °C | 3.7 °C | 33.78 mm |
| December | -12.7 °C | -3.8 °C | 24.64 mm |
| Annual | -0.2 °C | 11.2 °C | 748.77 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 4a : -34.4°C to -31.7°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 |