Lanesboro, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.5 °F (low) to 58.5 °F (high). Annual precipitation averages 33.6 Inches. Lanesboro is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 27.8 °F | 0.76 in. |
| February | 13.9 °F | 32.3 °F | 1.06 in. |
| March | 25.3 °F | 45.7 °F | 1.94 in. |
| April | 36.3 °F | 60.1 °F | 3.56 in. |
| May | 48.9 °F | 70.9 °F | 4.84 in. |
| June | 59.6 °F | 80.8 °F | 5.14 in. |
| July | 63.2 °F | 84.0 °F | 3.89 in. |
| August | 60.4 °F | 81.6 °F | 4.09 in. |
| September | 51.1 °F | 75.9 °F | 3.02 in. |
| October | 38.9 °F | 63.0 °F | 2.56 in. |
| November | 26.3 °F | 46.4 °F | 1.51 in. |
| December | 15.8 °F | 33.0 °F | 1.27 in. |
| Annual | 37.5 °F | 58.5 °F | 33.64 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |