Lansing, 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 57.5 °F (high). Annual precipitation averages 38.3 Inches. Lansing 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 27.1 °F | 1.38 in. |
| February | 13.4 °F | 31.7 °F | 1.26 in. |
| March | 24.9 °F | 44.1 °F | 2.07 in. |
| April | 36.4 °F | 58.5 °F | 4.08 in. |
| May | 47.9 °F | 70.3 °F | 5.18 in. |
| June | 58.2 °F | 79.8 °F | 5.59 in. |
| July | 62.3 °F | 83.3 °F | 4.41 in. |
| August | 60.3 °F | 81.4 °F | 4.11 in. |
| September | 51.9 °F | 74.3 °F | 3.78 in. |
| October | 39.9 °F | 61.1 °F | 2.7 in. |
| November | 27.9 °F | 45.3 °F | 2.16 in. |
| December | 17.1 °F | 32.6 °F | 1.57 in. |
| Annual | 37.5 °F | 57.5 °F | 38.29 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 |