Vernon, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.4 °C (low) to 17.6 °C (high). Annual precipitation averages 273.6 Millimeters. Vernon is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | 4.9 °C | 22.35 mm |
| February | -7.4 °C | 6.8 °C | 24.89 mm |
| March | -3.8 °C | 11.6 °C | 26.92 mm |
| April | -1.1 °C | 15.1 °C | 26.92 mm |
| May | 3.3 °C | 20.8 °C | 31.5 mm |
| June | 8 °C | 27.6 °C | 19.05 mm |
| July | 12.4 °C | 32.8 °C | 18.8 mm |
| August | 11.6 °C | 31.7 °C | 17.53 mm |
| September | 6.5 °C | 26.2 °C | 19.05 mm |
| October | 0.2 °C | 18.2 °C | 23.88 mm |
| November | -5.6 °C | 10.6 °C | 21.84 mm |
| December | -9.9 °C | 4.7 °C | 20.83 mm |
| Annual | 0.4 °C | 17.6 °C | 273.56 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |