Liberal, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.4 °C (low) to 21.3 °C (high). Annual precipitation averages 491.8 Millimeters. Liberal 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 | 8.7 °C | 11.18 mm |
| February | -5.4 °C | 10.7 °C | 9.4 mm |
| March | -1 °C | 16 °C | 29.97 mm |
| April | 3.9 °C | 20.8 °C | 44.2 mm |
| May | 10.1 °C | 26 °C | 58.17 mm |
| June | 16.1 °C | 31.7 °C | 75.18 mm |
| July | 18.7 °C | 34.1 °C | 76.2 mm |
| August | 17.8 °C | 32.9 °C | 66.04 mm |
| September | 13.2 °C | 29.1 °C | 36.32 mm |
| October | 5.6 °C | 22.2 °C | 49.28 mm |
| November | -1.4 °C | 15.1 °C | 14.48 mm |
| December | -6.2 °C | 8.7 °C | 21.34 mm |
| Annual | 5.4 °C | 21.3 °C | 491.76 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |