National Weather Service United States Department of Commerce
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Last Map Update: Mon, May 18, 2026 at 4:54:27 pm PDT

Temperatures begin to increase Tuesday and are expected to peak Wednesday for the Inland Empire and Thursday for the lower deserts. Temperatures will be near to just above average for most places except the high deserts. The high deserts will see temperatures 5 to 10 degrees above average.
Peak high temperatures this week for inland areas - 80s for inland valleys and upper 80s-low 90s in the Inland Empire.

 

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