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Historic March Heat Wave For Southwest, California | Weather.com
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USA National Forecast

Historic heat will bring record high temperatures to much of the West. Numerous records are expected to fall. Here's the latest.

Jonathan Erdman
ByJonathan Erdman,Miriam GuthrieandRob Shackelford•
March 18, 2026Updated: March 18, 2026, 7:20 am EDTPublished: March 18, 2026, 7:20 am EDT

You Could See Highs In 90s/100s

A long-lived, historic March heat wave is underway. For the latest forecast and perspective, click here.

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