West Haven, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.2 °F (low) to 62.8 °F (high). Annual precipitation averages 16.9 Inches. West Haven 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 | 21.5 °F | 36.7 °F | 1.86 in. |
| February | 25.5 °F | 42.3 °F | 1.54 in. |
| March | 33.4 °F | 53.1 °F | 1.72 in. |
| April | 39.2 °F | 60.4 °F | 1.91 in. |
| May | 47.6 °F | 70.5 °F | 2.19 in. |
| June | 55.5 °F | 81.5 °F | 0.98 in. |
| July | 63.8 °F | 91.3 °F | 0.43 in. |
| August | 62.1 °F | 89.4 °F | 0.67 in. |
| September | 52.4 °F | 78.7 °F | 1.14 in. |
| October | 40.7 °F | 63.9 °F | 1.67 in. |
| November | 30.5 °F | 48.9 °F | 1.22 in. |
| December | 22.7 °F | 37.3 °F | 1.6 in. |
| Annual | 41.2 °F | 62.8 °F | 16.93 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |