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Historic March heatwave in US west shatters high-temperature records

Some highs in California, Nevada and Arizona recorded at 25-35F above normal, with widespread alerts and closures States across the US south-west recorded blistering temperatures at the tail end of winter, including…

1 report1 sourceMar 19, 2026, 11:56 PM
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The GuardianMar 19, 2026, 11:56 PM

Historic March heatwave in US west shatters high-temperature records

Some highs in California, Nevada and Arizona recorded at 25-35F above normal, with widespread alerts and closures States across the US south-west recorded blistering temperatures at the tail end of winter, including some of the hottest March temperatures ever recorded in the US, with forecasts indicating hotter days are still to come. California, Nevada and Arizona were all under heat warnings on Thursday amid record-breaking temperatures. Continue reading...

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