Tooele, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.5 °C (low) to 16.9 °C (high). Annual precipitation averages 470.1 Millimeters. 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 | -5.9 °C | 3.6 °C | 39.12 mm |
| February | -4.1 °C | 6.2 °C | 43.43 mm |
| March | -0.3 °C | 11.6 °C | 54.86 mm |
| April | 2.8 °C | 14.8 °C | 59.94 mm |
| May | 7.3 °C | 20.3 °C | 60.45 mm |
| June | 12.3 °C | 26.6 °C | 26.92 mm |
| July | 17.3 °C | 32.1 °C | 19.05 mm |
| August | 16.6 °C | 31.2 °C | 16.51 mm |
| September | 11.1 °C | 25.3 °C | 28.45 mm |
| October | 4.4 °C | 17.2 °C | 37.34 mm |
| November | -1.3 °C | 9.6 °C | 40.89 mm |
| December | -5.8 °C | 3.8 °C | 43.18 mm |
| Annual | 4.5 °C | 16.9 °C | 470.14 mm |
| 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 : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |