West Valley City, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.5 °F (low) to 64.2 °F (high). Annual precipitation averages 16.8 Inches. West Valley City is located in USDA Plant Hardiness Zone 7b. 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 | 38.9 °F | 1.42 in. |
| February | 26.0 °F | 44.1 °F | 1.39 in. |
| March | 33.6 °F | 54.5 °F | 1.62 in. |
| April | 38.6 °F | 61.0 °F | 2.23 in. |
| May | 47.3 °F | 71.2 °F | 1.99 in. |
| June | 55.5 °F | 82.5 °F | 1.0 in. |
| July | 64.9 °F | 92.3 °F | 0.81 in. |
| August | 62.9 °F | 90.8 °F | 0.88 in. |
| September | 53.1 °F | 79.8 °F | 1.15 in. |
| October | 41.1 °F | 65.1 °F | 1.41 in. |
| November | 30.5 °F | 50.6 °F | 1.51 in. |
| December | 22.9 °F | 39.4 °F | 1.34 in. |
| Annual | 41.5 °F | 64.2 °F | 16.75 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 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |