Grand County Climate
Grand County, Utah
Avg Annual Temp
56.0°F
Annual Precip
8.5"
Annual Snowfall
10.8"
Extreme Heat Days
93.92
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Grand County Weather
Arid Heat Above the National Median
Grand County's annual average temperature of 56.0°F sits well above the national median of 53°F. This desert climate is defined by intense heat and very low annual precipitation of just 8.5 inches.
One of Utah's Warmest Counties
At 56.0°F, Grand County is much warmer than the Utah state average of 48.9°F. It represents the hotter, lower-elevation canyon lands that define the state's southeastern corridor.
Stark Contrast to Mountain Neighbors
Grand County is roughly 10 degrees warmer on average than neighboring Garfield County. While nearby Juab County experiences 60 extreme heat days, Grand sees a staggering 94 days above 90°F.
Blistering Summers and Dry Winters
Summer temperatures average 78.9°F, with July often peaking around 81.9°F and featuring frequent triple-digit days. Winters are relatively dry with only 10.8 inches of annual snowfall, keeping the landscape accessible year-round.
Hydration and High-Efficiency Cooling
Residents must invest in high-performance HVAC systems to handle 94 days of extreme heat per year. With only 8.5 inches of rain, water conservation and sun protection are the top priorities for any outdoor activity.
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.