Lastrup, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 31.6 °F (low) to 52.2 °F (high). Annual precipitation averages 29.5 Inches. 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 | 0.2 °F | 19.7 °F | 0.7 in. |
| February | 3.6 °F | 25.3 °F | 0.78 in. |
| March | 16.8 °F | 38.1 °F | 1.42 in. |
| April | 30.6 °F | 52.7 °F | 2.46 in. |
| May | 43.9 °F | 66.4 °F | 3.56 in. |
| June | 54.4 °F | 75.8 °F | 4.51 in. |
| July | 58.7 °F | 80.5 °F | 4.2 in. |
| August | 56.2 °F | 78.3 °F | 3.81 in. |
| September | 48.0 °F | 70.1 °F | 2.91 in. |
| October | 35.5 °F | 55.3 °F | 2.83 in. |
| November | 22.5 °F | 38.6 °F | 1.33 in. |
| December | 9.1 °F | 25.2 °F | 0.97 in. |
| Annual | 31.6 °F | 52.2 °F | 29.48 in. |
| 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 : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |