Brian Head, Utah has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.6 °C (low) to 9.4 °C (high). Annual precipitation averages 828.3 Millimeters. Brian Head is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jul. 21 - Jul. 31 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.3 °C | -0.1 °C | 87.12 mm |
| February | -10.2 °C | 0.4 °C | 96.52 mm |
| March | -8.1 °C | 3.7 °C | 104.9 mm |
| April | -5.7 °C | 6.8 °C | 84.84 mm |
| May | -1.2 °C | 11.7 °C | 39.62 mm |
| June | 4.1 °C | 18.3 °C | 17.02 mm |
| July | 7.8 °C | 21.7 °C | 56.64 mm |
| August | 7.3 °C | 20.6 °C | 68.07 mm |
| September | 3.6 °C | 16.6 °C | 50.04 mm |
| October | -1.8 °C | 10.3 °C | 66.29 mm |
| November | -6.7 °C | 3.8 °C | 68.07 mm |
| December | -10.4 °C | -0.5 °C | 89.15 mm |
| Annual | -2.6 °C | 9.4 °C | 828.28 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jul. 21 - Jul. 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |