Coolidge, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.3 °C (low) to 20.5 °C (high). Annual precipitation averages 446.3 Millimeters. Coolidge is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.2 °C | 7.6 °C | 8.89 mm |
| February | -7.4 °C | 9.8 °C | 9.4 mm |
| March | -2.9 °C | 15.2 °C | 23.37 mm |
| April | 1.8 °C | 20 °C | 37.85 mm |
| May | 8.2 °C | 25.2 °C | 57.15 mm |
| June | 14.4 °C | 31.2 °C | 67.82 mm |
| July | 17.2 °C | 33.6 °C | 73.66 mm |
| August | 16.3 °C | 32.3 °C | 78.74 mm |
| September | 11 °C | 28.6 °C | 29.21 mm |
| October | 2.7 °C | 21.5 °C | 36.07 mm |
| November | -3.9 °C | 13.7 °C | 12.45 mm |
| December | -8.7 °C | 7.8 °C | 11.68 mm |
| Annual | 3.3 °C | 20.5 °C | 446.29 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |