Riverside, Utah has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 16 °C (high). Annual precipitation averages 411.2 Millimeters. Riverside is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.6 °C | 0.8 °C | 48.51 mm |
| February | -6.4 °C | 3.7 °C | 38.86 mm |
| March | -1.6 °C | 10.2 °C | 39.37 mm |
| April | 1.7 °C | 15.1 °C | 40.64 mm |
| May | 6.1 °C | 20.3 °C | 56.39 mm |
| June | 10.1 °C | 26.4 °C | 27.69 mm |
| July | 14.3 °C | 32 °C | 12.7 mm |
| August | 13.4 °C | 31.2 °C | 16 mm |
| September | 8.3 °C | 25.3 °C | 29.21 mm |
| October | 2.1 °C | 17.2 °C | 36.83 mm |
| November | -3.2 °C | 8.6 °C | 29.21 mm |
| December | -7.8 °C | 1.6 °C | 35.81 mm |
| Annual | 2.4 °C | 16 °C | 411.22 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |