Herriman, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 17.1 °C (high). Annual precipitation averages 471.9 Millimeters. Herriman 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. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.4 °C | 3.8 °C | 42.93 mm |
| February | -3.6 °C | 6 °C | 43.43 mm |
| March | 0 °C | 11.4 °C | 49.78 mm |
| April | 2.8 °C | 15.3 °C | 59.18 mm |
| May | 7.3 °C | 20.8 °C | 55.12 mm |
| June | 11.9 °C | 27.3 °C | 28.96 mm |
| July | 16.8 °C | 32.6 °C | 20.57 mm |
| August | 16.4 °C | 31.6 °C | 23.11 mm |
| September | 11.2 °C | 25.7 °C | 32.51 mm |
| October | 4.7 °C | 17.7 °C | 40.39 mm |
| November | -0.7 °C | 9.7 °C | 36.83 mm |
| December | -5.3 °C | 3.8 °C | 39.12 mm |
| Annual | 4.7 °C | 17.1 °C | 471.93 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| 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 |