Garden City, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 4.6 °C (low) to 20.4 °C (high). Annual precipitation averages 497.3 Millimeters. Garden City is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.9 °C | 7.4 °C | 11.94 mm |
| February | -6.4 °C | 9.4 °C | 12.95 mm |
| March | -1.8 °C | 14.9 °C | 29.21 mm |
| April | 3 °C | 19.5 °C | 41.91 mm |
| May | 9.5 °C | 25.1 °C | 70.87 mm |
| June | 15.6 °C | 31 °C | 76.2 mm |
| July | 18.2 °C | 33.5 °C | 81.28 mm |
| August | 17.2 °C | 32.1 °C | 70.87 mm |
| September | 12.4 °C | 28.4 °C | 34.04 mm |
| October | 4.7 °C | 21.4 °C | 35.81 mm |
| November | -2.3 °C | 13.8 °C | 13.21 mm |
| December | -7.1 °C | 7.8 °C | 19.05 mm |
| Annual | 4.6 °C | 20.4 °C | 497.34 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |