Ellis, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.8 °C (low) to 19.5 °C (high). Annual precipitation averages 610.6 Millimeters. Ellis is located in USDA Plant Hardiness Zone 6b. 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 | -8.2 °C | 5.7 °C | 14.22 mm |
| February | -6.7 °C | 7.8 °C | 19.3 mm |
| March | -1.7 °C | 13.8 °C | 34.29 mm |
| April | 3.4 °C | 18.8 °C | 53.34 mm |
| May | 9.8 °C | 24.2 °C | 93.47 mm |
| June | 15.9 °C | 30.6 °C | 85.34 mm |
| July | 18.8 °C | 33.4 °C | 90.68 mm |
| August | 17.7 °C | 32.1 °C | 78.99 mm |
| September | 12.5 °C | 27.7 °C | 50.29 mm |
| October | 4.8 °C | 20.6 °C | 44.45 mm |
| November | -2.1 °C | 12.9 °C | 22.86 mm |
| December | -7.1 °C | 6.4 °C | 23.37 mm |
| Annual | 4.8 °C | 19.5 °C | 610.6 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |