Vernon, Utah has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 32.7 °F (low) to 63.6 °F (high). Annual precipitation averages 10.8 Inches. 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 | 14.4 °F | 40.9 °F | 0.88 in. |
| February | 18.6 °F | 44.3 °F | 0.98 in. |
| March | 25.2 °F | 52.8 °F | 1.06 in. |
| April | 30.0 °F | 59.1 °F | 1.06 in. |
| May | 37.9 °F | 69.4 °F | 1.24 in. |
| June | 46.4 °F | 81.6 °F | 0.75 in. |
| July | 54.4 °F | 91.0 °F | 0.74 in. |
| August | 52.9 °F | 89.1 °F | 0.69 in. |
| September | 43.7 °F | 79.1 °F | 0.75 in. |
| October | 32.3 °F | 64.7 °F | 0.94 in. |
| November | 21.9 °F | 51.0 °F | 0.86 in. |
| December | 14.1 °F | 40.5 °F | 0.82 in. |
| Annual | 32.7 °F | 63.6 °F | 10.77 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |