National Weather Service United States Department of Commerce
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Last Map Update: Sat, Oct 3, 2026 at 8:58:22 am PDT

A Heat Advisory is now in effect for portions of the Delta, Valley, and foothills from 11 am Today, October 3 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.
Keep your cool. Stay hydrated, don’t wait until you are thirsty. Dress for heat: wear light-weight layers, a hat, & sunglasses. Apply sunscreen: use sunscreen of 30 SPF or higher. Look before you lock: never leave children or pets in cars. Stay cool: take regular breaks in shaded or air-conditioned areas.

 

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