Milan, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8 °C (low) to 20.6 °C (high). Annual precipitation averages 855.5 Millimeters. Milan is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 6.9 °C | 24.38 mm |
| February | -3.3 °C | 9.4 °C | 32.77 mm |
| March | 1.7 °C | 15 °C | 60.71 mm |
| April | 6.9 °C | 20.3 °C | 81.03 mm |
| May | 13.2 °C | 25.2 °C | 124.46 mm |
| June | 18.8 °C | 30.9 °C | 127.25 mm |
| July | 21.2 °C | 33.7 °C | 97.79 mm |
| August | 20.2 °C | 32.8 °C | 94.49 mm |
| September | 15.6 °C | 28.6 °C | 67.31 mm |
| October | 8.5 °C | 21.9 °C | 74.93 mm |
| November | 1.8 °C | 14.5 °C | 37.08 mm |
| December | -3.6 °C | 7.8 °C | 33.27 mm |
| Annual | 8 °C | 20.6 °C | 855.47 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |