This Arizona Town Shattered a 70-Year U.S. Heat Record

As I write this, today is the first day of spring. On the last day of Winter, Arizona smashed a decades-long heat record. While breaking records might be something to crow about under normal circumstances, this isn’t one we’re proud of.

A Winter Scorcher In The Yuma Desert

Arizona is hot. I’m not talking about the housing market or some other impressive trend. On the very last day of winter, the temperature hit a record‑setting 110°F, just outside of Martinez Lake.

Martinez Lake is deep in the Yuma Desert, and the heat smashing value was recorded during a winter heat wave that’s been making us feel like we’re living through midsummer, rather than early spring. According to the AP News, this is now the highest March temperature ever recorded in the United States.

READ: What Wildflowers Can You See In Southern Arizona This Spring?

Martinez Lake sits about 145 miles west of Phoenix, near the Arizona‑California border. This quiet desert community became the center of attention this week with this record-setting spike. The heat wave didn’t just break records; it obliterated them.

A New National Benchmark

Prior to this week, the March heat record stood at 108°F. It was set in Rio Grande City, Texas, a benchmark that has stood since 1954.

While the Midwest and Eastern United States are still digging out from under fresh snow, North Shore, California, tied a record on Wednesday, a day before Martinez Lake pushed the bar even higher.

READ MORE: What To Expect from Arizona's Summer Heat

What’s Behind The Heat?

According to the National Weather Service, La Niña is the force behind this year’s extreme weather patterns.

This global weather system cools the eastern Pacific, strengthens trade winds, and shifts the jet stream. This pattern is known to bring hotter, drier weather to Arizona and, at the same time, to steer the cold Arctic air into other U.S. regions, creating sharp temperature contrasts.

This isn’t just a one-off. Scientists warn the trend could signal a very hot, very dry summer in Arziona.