Garden City, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 28.4 °F (low) to 55.7 °F (high). Annual precipitation averages 13.8 Inches. Garden City is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.4 °F | 30.4 °F | 1.53 in. |
| February | 10.5 °F | 33.4 °F | 1.23 in. |
| March | 19.7 °F | 42.8 °F | 0.97 in. |
| April | 27.6 °F | 53.3 °F | 1.35 in. |
| May | 35.6 °F | 63.2 °F | 1.87 in. |
| June | 42.6 °F | 73.7 °F | 0.98 in. |
| July | 48.6 °F | 83.3 °F | 0.53 in. |
| August | 47.8 °F | 82.2 °F | 0.81 in. |
| September | 38.3 °F | 72.5 °F | 1.01 in. |
| October | 29.0 °F | 58.4 °F | 1.32 in. |
| November | 20.2 °F | 43.1 °F | 1.03 in. |
| December | 11.8 °F | 32.1 °F | 1.14 in. |
| Annual | 28.4 °F | 55.7 °F | 13.77 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |