Mullinville, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.3 °C (low) to 20.3 °C (high). Annual precipitation averages 639.3 Millimeters. Mullinville 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 | -6.3 °C | 7.2 °C | 17.02 mm |
| February | -4.8 °C | 9.5 °C | 19.05 mm |
| March | 0.1 °C | 14.7 °C | 40.39 mm |
| April | 5 °C | 19.7 °C | 55.37 mm |
| May | 11.3 °C | 24.9 °C | 87.63 mm |
| June | 17 °C | 30.5 °C | 97.28 mm |
| July | 19.3 °C | 33.3 °C | 88.9 mm |
| August | 18.5 °C | 32.2 °C | 83.57 mm |
| September | 13.8 °C | 28.2 °C | 45.97 mm |
| October | 6.5 °C | 21.5 °C | 57.4 mm |
| November | -0.3 °C | 13.8 °C | 22.86 mm |
| December | -5.1 °C | 7.8 °C | 23.88 mm |
| Annual | 6.3 °C | 20.3 °C | 639.32 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |