Hesston, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.2 °C (low) to 19.5 °C (high). Annual precipitation averages 855.2 Millimeters. Hesston 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.1 °C | 5.5 °C | 20.07 mm |
| February | -4.3 °C | 7.9 °C | 31.75 mm |
| March | 0.9 °C | 13.8 °C | 59.69 mm |
| April | 6.2 °C | 19.1 °C | 70.36 mm |
| May | 12.4 °C | 24.3 °C | 133.35 mm |
| June | 18.1 °C | 30.2 °C | 119.63 mm |
| July | 20.4 °C | 32.8 °C | 113.03 mm |
| August | 19.4 °C | 31.9 °C | 99.82 mm |
| September | 14.8 °C | 27.7 °C | 73.66 mm |
| October | 7.7 °C | 20.8 °C | 62.48 mm |
| November | 0.9 °C | 13.3 °C | 40.13 mm |
| December | -4.4 °C | 6.7 °C | 31.24 mm |
| Annual | 7.2 °C | 19.5 °C | 855.21 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |