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Southwestern US experiencing record-breaking heatwave in March, with Arizona recording highest US March temperature.

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The southwestern United States is currently experiencing an unusually early and intense heatwave, setting record temperatures for March. A community near Martinez Lake, Arizona, recorded 110°F (43.3°C), the highest March temperature ever recorded in the US. This extreme heat is attributed to a large heat dome trapping warm air. The heatwave is affecting a wide area, with temperatures exceeding 40°C in several southwestern states. The US Weather Service forecasts continued high temperatures across much of the country. This unseasonal heat is newsworthy due to its intensity, early occurrence, and potential impacts on public health and the environment. While Palm Springs is not specifically mentioned, the general region is affected.
Last updated: April 4, 2026