Rolla, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 40.7 °F (low) to 70.2 °F (high). Annual precipitation averages 17.9 Inches. Rolla 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 | 47.9 °F | 0.4 in. |
| February | 21.8 °F | 51.5 °F | 0.32 in. |
| March | 29.2 °F | 60.5 °F | 1.04 in. |
| April | 37.7 °F | 68.7 °F | 1.39 in. |
| May | 48.8 °F | 78.5 °F | 2.09 in. |
| June | 59.5 °F | 88.8 °F | 2.72 in. |
| July | 64.3 °F | 93.1 °F | 2.79 in. |
| August | 62.6 °F | 90.7 °F | 2.99 in. |
| September | 54.4 °F | 83.9 °F | 1.37 in. |
| October | 40.9 °F | 71.6 °F | 1.65 in. |
| November | 28.9 °F | 58.7 °F | 0.5 in. |
| December | 20.6 °F | 47.9 °F | 0.61 in. |
| Annual | 40.7 °F | 70.2 °F | 17.87 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |