National Weather Service United States Department of Commerce
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Last Map Update: Tue, Oct 6, 2026 at 5:14:35 am PDT

A Heat Advisory is now in effect for the Delta, Valley, and foothills through 10 pm Wednesday, October 7.
Above normal high temperatures persist across interior NorCal through the weekend and into the week ahead with a potential return to seasonable weather late in the week.
With seasonably warm temperatures expected over the next several days, Moderate HeatRisk and isolated areas of Major HeatRisk are anticipated across much of the Delta, Valley, and foothills. Moderate HeatRisk means that this level of heat affects most individuals sensitive to heat, especially those without adequate cooling or hydration.
Chances for isolated thunderstorms today over the northeastern Sierra foothills and the length of the Sierra crest.

 

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