Cottonwood Heights, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.8 °F (low) to 63.8 °F (high). Annual precipitation averages 21.6 Inches. Cottonwood Heights is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.1 °F | 39.9 °F | 1.92 in. |
| February | 25.9 °F | 44.0 °F | 2.03 in. |
| March | 32.6 °F | 53.9 °F | 2.56 in. |
| April | 37.5 °F | 60.6 °F | 2.87 in. |
| May | 46.0 °F | 70.6 °F | 2.57 in. |
| June | 54.0 °F | 81.8 °F | 1.39 in. |
| July | 62.8 °F | 91.2 °F | 0.66 in. |
| August | 61.1 °F | 89.3 °F | 0.8 in. |
| September | 52.6 °F | 79.1 °F | 1.34 in. |
| October | 41.1 °F | 64.6 °F | 1.77 in. |
| November | 31.1 °F | 50.7 °F | 1.77 in. |
| December | 22.6 °F | 39.6 °F | 1.95 in. |
| Annual | 40.8 °F | 63.8 °F | 21.63 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |