Lanesboro, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2 °C (low) to 13.1 °C (high). Annual precipitation averages 919 Millimeters. Lanesboro is located in USDA Plant Hardiness Zone 4b. 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 | -13.9 °C | -4.2 °C | 27.43 mm |
| February | -12.1 °C | -1.7 °C | 27.43 mm |
| March | -5.1 °C | 5.3 °C | 48.26 mm |
| April | 1.6 °C | 13.6 °C | 99.31 mm |
| May | 8.1 °C | 20.3 °C | 112.27 mm |
| June | 13.9 °C | 25.8 °C | 151.64 mm |
| July | 16.1 °C | 27.9 °C | 106.43 mm |
| August | 14.8 °C | 26.7 °C | 111 mm |
| September | 10.2 °C | 22.9 °C | 89.41 mm |
| October | 3.3 °C | 15.4 °C | 64.26 mm |
| November | -3.2 °C | 6.5 °C | 46.23 mm |
| December | -9.8 °C | -1 °C | 35.31 mm |
| Annual | 2 °C | 13.1 °C | 918.98 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |