Yuma County Climate
Yuma County, Arizona
Avg Annual Temp
74.1°F
Annual Precip
4.1"
Annual Snowfall
0.0"
Extreme Heat Days
180.34285714285716
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.