Mankato, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 64.6 °F (high). Annual precipitation averages 27.6 Inches. Mankato is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.4 °F | 37.7 °F | 0.67 in. |
| February | 19.2 °F | 42.4 °F | 0.79 in. |
| March | 28.1 °F | 53.8 °F | 1.48 in. |
| April | 38.6 °F | 64.1 °F | 2.63 in. |
| May | 49.8 °F | 74.0 °F | 4.24 in. |
| June | 61.1 °F | 84.8 °F | 3.67 in. |
| July | 65.6 °F | 89.9 °F | 4.28 in. |
| August | 63.4 °F | 87.3 °F | 3.44 in. |
| September | 53.5 °F | 80.1 °F | 2.32 in. |
| October | 41.1 °F | 67.4 °F | 1.86 in. |
| November | 28.6 °F | 52.7 °F | 1.29 in. |
| December | 19.0 °F | 40.4 °F | 0.96 in. |
| Annual | 40.3 °F | 64.6 °F | 27.63 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |