Fresno County Climate
Fresno County, California
Avg Annual Temp
61.7°F
Annual Precip
20.4"
Annual Snowfall
0.4"
Extreme Heat Days
97.375
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fresno County Weather
Warm and Semi-Arid Central Valley
Fresno County averages 61.7°F annually, making it notably warmer than the typical American county. Its semi-arid climate delivers just 20.4 inches of rain, though it receives more moisture than the deep desert.
A Standard for Valley Heat
The county's 61.7°F average temperature ranks it as one of the warmer regions in California, exceeding the state average of 58.7°F. It represents the classic thermal profile of the central San Joaquin Valley.
Dry Heat Away From the Coast
Fresno shares its intense valley heat with Madera and Kings counties, though it receives slightly more precipitation at 20.4 inches. Unlike the coastal counties to the west, it lacks the cooling influence of the Pacific Ocean.
Hot Summers and Negligible Snow
Summer averages reach 77.3°F with 97 days topping 90°F. Winters are mild at 46.8°F, and snowfall is almost non-existent at just 0.4 inches per year.
Prioritize Cooling and Water Efficiency
Reliable air conditioning is a non-negotiable requirement for the three months of extreme summer heat. Gardeners should prioritize drought-tolerant landscaping to manage the modest 20.4 inches of annual rainfall.
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.