Garden City, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 10.2 °C (low) to 25.3 °C (high). Annual precipitation averages 406.6 Millimeters. Garden City is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.9 °C | 14.4 °C | 20.07 mm |
| February | 1.1 °C | 17 °C | 19.3 mm |
| March | 5 °C | 21.6 °C | 26.92 mm |
| April | 9.4 °C | 26.1 °C | 26.42 mm |
| May | 15.2 °C | 30.6 °C | 40.13 mm |
| June | 19.8 °C | 33.9 °C | 40.89 mm |
| July | 21.1 °C | 34.9 °C | 45.47 mm |
| August | 20.7 °C | 34.4 °C | 48.51 mm |
| September | 16.7 °C | 30.3 °C | 60.96 mm |
| October | 10.8 °C | 25.8 °C | 36.32 mm |
| November | 4 °C | 19.4 °C | 24.38 mm |
| December | -0.4 °C | 14.8 °C | 17.27 mm |
| Annual | 10.2 °C | 25.3 °C | 406.64 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |