Editor’s note (3/21/26): Four stations (two in Arizona and two in California) recorded temperatures of 112 degrees Fahrenheit (44.4 degrees Celsius) on Friday, March 20, besting the all-time U.S.

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A long-duration heat wave is taking shape over the western half of the U.S. and is forecast to stick around in the days ahead. A high-pressure system in place over the West is keeping precipitation ...

This is read by an automated voice. Please report any issues or inconsistencies here. It was another day of record-breaking temperatures as a heat wave that is not expected to break until the weekend ...

Temperatures reached record highs in multiple states on Wednesday, as a heat wave that has been scorching the West since last week expanded into the middle of the country. The unusually warm weather ...

After smashing March heat records in 14 states and the US as a whole, the gigantic heat dome that’s baked the Southwest is creeping eastward and may end up being one of the most expansive heat waves ...

This is read by an automated voice. Please report any issues or inconsistencies here. Southern California broke 28 temperature records Wednesday, with Indio reaching 107 degrees. Heat warnings ...

An early heat wave baking the West this week obliterated numerous records in California and Arizona on Wednesday and Thursday. Subscribe to read this story ad-free Get unlimited access to ad-free ...

People flock Baker Beach near the Golden Gate Bridge as heat advisory issued in San Francisco, California, on March 16, 2026. Reporter A historic March heat wave has brought record-breaking ...

An unprecedented heat wave in the West broke the record for the hottest March temperature anywhere in the United States: 108 degrees. It’s an alarming signal of how hot the planet is getting and how ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Thom Dunn Thom Dunn is a writer focusing on home heating and cooling. He once ...