Jetmore, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.3 °C (low) to 20.6 °C (high). Annual precipitation averages 613.4 Millimeters. Jetmore 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 | -7.3 °C | 7.2 °C | 16.26 mm |
| February | -5.9 °C | 9.4 °C | 18.03 mm |
| March | -1.2 °C | 14.9 °C | 36.83 mm |
| April | 3.9 °C | 20.2 °C | 52.83 mm |
| May | 10.3 °C | 25.4 °C | 99.06 mm |
| June | 16.3 °C | 31.3 °C | 85.34 mm |
| July | 18.9 °C | 34 °C | 99.82 mm |
| August | 17.8 °C | 32.8 °C | 77.98 mm |
| September | 13.1 °C | 28.8 °C | 40.89 mm |
| October | 5.4 °C | 21.9 °C | 46.74 mm |
| November | -1.5 °C | 14 °C | 16.51 mm |
| December | -6.3 °C | 7.8 °C | 23.11 mm |
| Annual | 5.3 °C | 20.6 °C | 613.4 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |