River Heights, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.3 °C (low) to 15.5 °C (high). Annual precipitation averages 453.7 Millimeters. River Heights is located in USDA Plant Hardiness Zone 6a. 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 | -9.4 °C | 0.3 °C | 47.75 mm |
| February | -7.6 °C | 2.9 °C | 37.34 mm |
| March | -2.4 °C | 9.6 °C | 52.32 mm |
| April | 0.9 °C | 14.4 °C | 52.07 mm |
| May | 5.1 °C | 19.8 °C | 55.12 mm |
| June | 8.7 °C | 26 °C | 29.46 mm |
| July | 12.8 °C | 31.7 °C | 17.02 mm |
| August | 11.8 °C | 30.9 °C | 14.99 mm |
| September | 6.9 °C | 25 °C | 31.75 mm |
| October | 0.9 °C | 16.9 °C | 44.2 mm |
| November | -3.8 °C | 8.1 °C | 33.02 mm |
| December | -8.7 °C | 0.9 °C | 38.61 mm |
| Annual | 1.3 °C | 15.5 °C | 453.65 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 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |