Leon, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.4 °C (low) to 20 °C (high). Annual precipitation averages 971.8 Millimeters. Leon 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 | -5.6 °C | 6.2 °C | 22.86 mm |
| February | -3.9 °C | 8.8 °C | 36.58 mm |
| March | 1.2 °C | 14.7 °C | 64.01 mm |
| April | 6.7 °C | 20.1 °C | 88.9 mm |
| May | 12.8 °C | 24.6 °C | 148.84 mm |
| June | 18.2 °C | 29.8 °C | 140.97 mm |
| July | 20.6 °C | 32.7 °C | 108.2 mm |
| August | 19.5 °C | 32.1 °C | 105.41 mm |
| September | 14.8 °C | 28.3 °C | 90.93 mm |
| October | 7.8 °C | 21.7 °C | 81.79 mm |
| November | 1.3 °C | 13.9 °C | 47.75 mm |
| December | -4.1 °C | 7.4 °C | 35.56 mm |
| Annual | 7.4 °C | 20 °C | 971.8 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |