Santa Cruz County Climate
Santa Cruz County, Arizona
Avg Annual Temp
61.7°F
Annual Precip
16.1"
Annual Snowfall
0.4"
Extreme Heat Days
90.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Santa Cruz County Weather
Mild and Moist Southern Borderlands
Santa Cruz County averages 61.7°F annually, which is warmer than the national median but cooler than much of the desert Southwest. It is one of the wettest regions in Arizona, receiving 16.1 inches of precipitation per year.
Cooler and Wetter Than the State Average
The county's 61.7°F average is nearly two degrees cooler than the Arizona state average of 63.5°F. It also exceeds the state's average rainfall by nearly 4 inches, making it a relatively lush environment for the region.
A Cooler Refuge Near Pima County
Santa Cruz is noticeably cooler than Pima County, which averages 68.1°F just to the north. It also receives significantly more moisture than Yuma, which survives on only 4.1 inches of rain compared to Santa Cruz's 16.1.
Moderate Summers and Soft Winters
July averages a temperate 78.2°F, supported by only 90 days of extreme heat per year. Winters are comfortable with a 47.0°F average and negligible snowfall of only 0.4 inches.
Plan for Rain and Moderate Sun
The 16.1 inches of rain mean residents should maintain good drainage systems and prepare for a vibrant growing season. While there are 90 heat days, the mild 78.2°F July average allows for more outdoor flexibility than neighboring counties.
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.