Richmond, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.9 °C (low) to 15.6 °C (high). Annual precipitation averages 501.1 Millimeters. Richmond 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 | -9.9 °C | 0.2 °C | 51.56 mm |
| February | -7.9 °C | 2.9 °C | 46.99 mm |
| March | -2.7 °C | 9.6 °C | 51.31 mm |
| April | 0.7 °C | 14.6 °C | 59.44 mm |
| May | 4.7 °C | 19.9 °C | 61.21 mm |
| June | 8.2 °C | 26.1 °C | 28.96 mm |
| July | 12.1 °C | 31.7 °C | 16.26 mm |
| August | 11.2 °C | 31 °C | 18.03 mm |
| September | 6.4 °C | 25.2 °C | 35.56 mm |
| October | 0.7 °C | 16.9 °C | 48.51 mm |
| November | -4.2 °C | 8.1 °C | 39.37 mm |
| December | -8.8 °C | 0.9 °C | 43.94 mm |
| Annual | 0.9 °C | 15.6 °C | 501.14 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Dfb - Humid Continental Mild Summer, Wet All Year |