National Weather Service United States Department of Commerce
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Last Map Update: Fri, Oct 2, 2026 at 7:32:18 pm PDT

The calendar says Fall, but it will feel like Summer outside. A Heat Advisory is in effect 11 AM Saturday to 11 PM Tuesday for the San Joaquin Valley and surrounding foothills with temperatures 10-15 degrees above average. Much of the population will be at major risk of heat illness, especially the elderly, infants, and those without effective cooling or hydration.
🌡️Temperatures will heat up this weekend to near record values across California. The best chance for temperatures in the triple digits this Saturday will be along the western side of the San Joaquin Valley and in the Bakersfield area.
Major Heat Risk exists for portions of the San Joaquin Valley this weekend. The most affected areas will be Bakersfield, up along the Coastal Range and Merced County. Much of the population is affected by Major Heat Risk, especially those without effective cooling or hydration, as well as elderly and infants. Drink plenty of water or sports drink, limit time outdoors during the warmest parts of the day, and use air conditioning during the day.
A ridge of high pressure will begin building in California starting today. Because of this, temperatures will go up through the weekend, with Sunday being our warmest day for the week 🌡️🫠. As such, a Heat Advisory is in place starting Saturday morning through Sunday night. With chances for areas to see Major HeatRisk on Sunday up to 90 percent, it is important to take care of yourself. Limiting time outdoors during the hottest part of the day, hydrating properly, wearing light colored clothes are steps to take to protect yourself 🪭.
Higher than typical October temperatures will impact the Central Valley o California through next week. Moderate to Major HeatRisk is expected this weekend well into next week. Heat of this intensity can endanger anyone without adequate cooling or hydration.

 

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