Windom, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 67 °F (high). Annual precipitation averages 30.8 Inches. Windom is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.1 °F | 42.2 °F | 0.81 in. |
| February | 23.5 °F | 45.8 °F | 1.15 in. |
| March | 33.4 °F | 56.7 °F | 2.15 in. |
| April | 42.5 °F | 66.2 °F | 2.71 in. |
| May | 53.7 °F | 75.7 °F | 5.01 in. |
| June | 64.2 °F | 86.6 °F | 4.1 in. |
| July | 68.3 °F | 90.8 °F | 3.93 in. |
| August | 66.3 °F | 89.0 °F | 3.61 in. |
| September | 57.8 °F | 81.9 °F | 2.45 in. |
| October | 45.0 °F | 69.5 °F | 2.43 in. |
| November | 32.5 °F | 55.7 °F | 1.39 in. |
| December | 23.4 °F | 43.7 °F | 1.09 in. |
| Annual | 44.3 °F | 67 °F | 30.83 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |