Yuma County Climate
Yuma County, Arizona
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
74.1°F
Annual Precip
4.1"
Annual Snowfall
0.0"
Extreme Heat Days
180
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
10a
Minimum winter temperature range for plant survival
8,838
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Yuma County
Climate Verdict
Yuma County has a hot, with an average annual temperature of 74.1°F, arid conditions receiving just 4.1 inches of precipitation annually, extreme heat exposure with 180.34285714285716 days per year above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are exceptionally mild, with January averaging 56.7°F. summers are scorching with July averaging 93.2°F. The 36°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Yuma County is 10.6°F warmer than the Arizona statewide average of 63.5°F, it is also noticeably drier, receiving 8.3 inches less precipitation than the state average, the county experiences 66.92786555111556 more extreme heat days than the state average.
Climate Profile
About Yuma County Weather
One of the Sunniest, Hottest Spots
Yuma County’s annual average temperature of 74.1°F is roughly 20 degrees higher than the national median. It is one of the driest places in the country, receiving a mere 4.1 inches of annual precipitation.
Arizona's Hot Weather Leader
Yuma far exceeds the Arizona state average of 63.5°F, making it one of the warmest counties in the entire state. Its lack of rain is also extreme, falling well below the state average of 12.3 inches.
A League of Its Own for Heat
Yuma is significantly hotter than neighboring Mohave County (65.9°F) and Pinal County (70.1°F). It receives less than half the rainfall of Mohave, cementing its status as the most arid region in the area.
Half the Year in Extreme Heat
The county endures a staggering 180 days of temperatures at or above 90°F, with July averaging 93.2°F. Snow is non-existent, and even winter stays warm with a January average of 56.7°F.
Maximum Sun and Heat Defense Required
With 180 days of extreme heat, professional-grade cooling and high-reflectivity roofing are essential for any home. Residents must prioritize water conservation and extreme UV protection to manage the 74.1°F annual heat.
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.