Cassoday, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 19.2 °C (high). Annual precipitation averages 919 Millimeters. Cassoday 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 | -6.8 °C | 5.3 °C | 19.05 mm |
| February | -4.9 °C | 7.8 °C | 35.56 mm |
| March | 0.3 °C | 13.9 °C | 59.94 mm |
| April | 5.9 °C | 19.3 °C | 91.44 mm |
| May | 12 °C | 23.7 °C | 133.6 mm |
| June | 17.5 °C | 29 °C | 134.37 mm |
| July | 20 °C | 32.1 °C | 107.19 mm |
| August | 18.9 °C | 31.5 °C | 94.74 mm |
| September | 14.2 °C | 27.4 °C | 89.41 mm |
| October | 7.1 °C | 20.8 °C | 73.66 mm |
| November | 0.5 °C | 13.2 °C | 47.75 mm |
| December | -4.7 °C | 6.8 °C | 32.26 mm |
| Annual | 6.7 °C | 19.2 °C | 918.97 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |