Cullison, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.5 °F (low) to 68.2 °F (high). Annual precipitation averages 27.8 Inches. Cullison 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 | 22.2 °F | 44.4 °F | 0.69 in. |
| February | 24.7 °F | 48.7 °F | 0.93 in. |
| March | 33.9 °F | 58.1 °F | 1.87 in. |
| April | 42.5 °F | 67.3 °F | 2.47 in. |
| May | 53.6 °F | 76.7 °F | 4.11 in. |
| June | 63.4 °F | 86.7 °F | 4.01 in. |
| July | 67.8 °F | 91.5 °F | 3.44 in. |
| August | 66.1 °F | 89.6 °F | 3.48 in. |
| September | 58.0 °F | 82.3 °F | 2.32 in. |
| October | 45.2 °F | 70.6 °F | 2.4 in. |
| November | 33.0 °F | 56.7 °F | 1.11 in. |
| December | 24.1 °F | 45.5 °F | 0.96 in. |
| Annual | 44.5 °F | 68.2 °F | 27.79 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |