Wheaton, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 17.5 °C (high). Annual precipitation averages 880.6 Millimeters. Wheaton is located in USDA Plant Hardiness Zone 6a. 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 | -9.3 °C | 2.6 °C | 19.81 mm |
| February | -7.4 °C | 5.2 °C | 29.97 mm |
| March | -1.6 °C | 11.6 °C | 53.09 mm |
| April | 4.1 °C | 17.4 °C | 87.12 mm |
| May | 10.8 °C | 22.6 °C | 124.97 mm |
| June | 16.6 °C | 27.9 °C | 124.46 mm |
| July | 19 °C | 31 °C | 116.84 mm |
| August | 17.7 °C | 30.2 °C | 101.35 mm |
| September | 12.2 °C | 25.9 °C | 82.8 mm |
| October | 5.3 °C | 19.6 °C | 68.33 mm |
| November | -1.4 °C | 11.2 °C | 40.13 mm |
| December | -7 °C | 4.5 °C | 31.75 mm |
| Annual | 4.9 °C | 17.5 °C | 880.62 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |