Grand County Climate
Grand County, Utah
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
56.0°F
Annual Precip
8.5"
Annual Snowfall
10.8"
Extreme Heat Days
94
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
4,217
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Grand County
Climate Verdict
Grand County has a mild, with an average annual temperature of 56.0°F, arid conditions receiving just 8.5 inches of precipitation annually, significant summer heat with 93.92 days annually above 90°F, light snow averaging 10.8 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 30.3°F. summers are hot, with July averaging 81.9°F. Residents experience a substantial 52°F difference between winter and summer.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Grand County is 7.2°F warmer than the Utah statewide average of 48.9°F, it is also noticeably drier, receiving 5.2 inches less precipitation than the state average, the county experiences 50.90128190774744 more extreme heat days than the state average.
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.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.