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A Prolonged and Unusual March Heat Wave Is Gripping Cities Across the West

Record highs including nearly 90°F in San Francisco and earliest 100°F in Las Vegas reflect an unusually warm winter and reduced Colorado snowpack, officials said.

  • This week, a rare winter heat wave is baking the U.S. West, with records falling across Southern California and San Francisco experiencing its hottest March in at least two decades.
  • Experts say the current heat follows an unusually warm winter and low mountain snowpack in Colorado that supplies water for millions, with rare March heat episodes in 2004 and 2005.
  • With parks preparing for crowds, officials urged caution as White Sands National Park may reach mid 90s and the Grand Canyon faced extreme heat warnings with possible 104 F.
  • Water providers in the Denver area have enacted or are considering limits, and officials urged visitors to hydrate during the heat wave on Wednesday.
  • Forecasters say Las Vegas, Nevada could reach 100 F Saturday, the earliest triple-digit threat and possible March record, while Phoenix, Arizona may top 100 F this week.
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Center

Miami, 18 Mar (EFE).- The west of the United States, particularly on the border with Mexico, faces this week a heat wave with more typical summer temperatures that will exceed 100 degrees Fahrenheit (37 centigrade) and break records, warned the National Weather Service (NWS) this Wednesday. An “anomalous early heat wave began to intensify in the west of the United States,” said the NWS in its forecast, which predicted that the temperatures will …

Right

The National Weather Service (NWS) has issued a critical alert to an anomalously early heat wave that affects the west of the country, while at the same time the center of the United States faces conditions conducive to the spread of forest fires.Read more

KAKE NewsKAKE News
+29 Reposted by 29 other sources
Center

Heat wave strikes Southwest amid record March highs

(The Center Square) - Temperatures well into the 90s - and beyond - are expected from Los Angeles to Denver this week as record highs are felt across the Southwest.

The Washington PostThe Washington Post
+17 Reposted by 17 other sources
Lean Left

A prolonged and unusual March heat wave is gripping cities across the West

Telemundo Area de la Bahía 48Telemundo Area de la Bahía 48
+5 Reposted by 5 other sources

San Francisco residents displayed an unusual amount of skin for this time of year this week, as a city better known for its cool summers, drizzle, and fog experienced its hottest March in at least two decades—part of an unusual winter heat wave stifling the western United States. While the Bay Area flirted with highs near 90 degrees Fahrenheit (32.2°C), Phoenix was expected to climb above 100°F (37.7°C) this week, a phenomenon typically seen in …

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The Washington Post broke the news in on Tuesday, March 17, 2026.
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