Rossville, 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 65.9 °F (high). Annual precipitation averages 36.2 Inches. Rossville 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 | 19.8 °F | 39.8 °F | 0.78 in. |
| February | 23.4 °F | 44.5 °F | 1.2 in. |
| March | 33.1 °F | 56.1 °F | 2.13 in. |
| April | 43.6 °F | 66.6 °F | 3.66 in. |
| May | 54.8 °F | 75.7 °F | 5.06 in. |
| June | 64.8 °F | 84.5 °F | 5.1 in. |
| July | 68.4 °F | 88.4 °F | 4.3 in. |
| August | 66.2 °F | 87.7 °F | 4.56 in. |
| September | 57.2 °F | 80.5 °F | 3.57 in. |
| October | 44.9 °F | 68.8 °F | 2.86 in. |
| November | 33.6 °F | 55.7 °F | 1.67 in. |
| December | 23.7 °F | 43.0 °F | 1.34 in. |
| Annual | 44.5 °F | 65.9 °F | 36.23 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |