Yolo County Climate
Yolo County, California
Avg Annual Temp
62.1°F
Annual Precip
21.1"
Annual Snowfall
0.0"
Extreme Heat Days
96.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Yolo County Weather
A Warmer Mediterranean Climate in Yolo
Yolo County's 62.1°F average annual temperature sits significantly higher than the national median, characterizing its classic Mediterranean climate. The county receives just 21.1 inches of annual precipitation, contributing to its dry and sun-drenched landscape.
Exceeding California's Average Warmth
At 62.1°F, Yolo maintains a warmer profile than the California state average of 58.7°F. This inland position prevents the cooling coastal effects found in many other California counties, keeping annual averages high.
Drier and Warmer Than Eastern Neighbors
Yolo is slightly warmer than neighboring Yuba County, which averages 61.7°F. While Yuba receives a substantial 35.8 inches of rain, Yolo operates on a much drier 21.1 inches annually.
Sizzling Summers and Snowless Winters
Summers are intense with 97 days reaching 90°F or higher and a July average of 76.4°F. Winters remain very mild at 48.4°F, with no annual snowfall recorded in the county.
Prepare for Prolonged Summer Heat
Residents must invest in robust HVAC systems to handle nearly 100 days of extreme heat each year. Outdoor planning is most flexible during the mild 46.9°F January days when temperatures remain well above freezing.
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.