Tooele, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.1 °F (low) to 62.3 °F (high). Annual precipitation averages 18.5 Inches. Tooele is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.3 °F | 38.4 °F | 1.54 in. |
| February | 24.7 °F | 43.2 °F | 1.71 in. |
| March | 31.4 °F | 52.8 °F | 2.16 in. |
| April | 37.0 °F | 58.7 °F | 2.36 in. |
| May | 45.1 °F | 68.5 °F | 2.38 in. |
| June | 54.1 °F | 79.9 °F | 1.06 in. |
| July | 63.1 °F | 89.8 °F | 0.75 in. |
| August | 61.8 °F | 88.1 °F | 0.65 in. |
| September | 52.0 °F | 77.6 °F | 1.12 in. |
| October | 40.0 °F | 62.9 °F | 1.47 in. |
| November | 29.6 °F | 49.2 °F | 1.61 in. |
| December | 21.5 °F | 38.8 °F | 1.7 in. |
| Annual | 40.1 °F | 62.3 °F | 18.51 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |