• Record heat spreads east as over 200 record highs are forecast across the U.S.

    Record heat is forecast to persist across parts of the western and central United States through March 25, 2026, with the National Weather Service warning that more than 200 daily record highs could be set as above-normal temperatures spread from the West back into the central and southern Plains. A brief cooldown over parts of the central and eastern U.S. on March 23 is expected to be short-lived. The Storm Prediction Center has issued a severe thunderstorm outlook for Thursday, March 26, covering areas from northeast Missouri to western and northern Ohio.

  • Extreme March heat reaches 44.4°C (112°F) as multiple states set records in the western United States

    An intense early-season heatwave pushed temperatures to extreme levels across the southwestern United States between March 18 and 22, 2026, as a persistent high-pressure ridge produced widespread daily and monthly March temperature records. Record heat was reported across Arizona, California, Nevada, and other parts of the western United States.

  • Las Vegas sets new March record as historic heat spreads across the U.S. Southwest

    A historic March heat event affected the U.S. Southwest on March 19 and 20, 2026, setting a new March temperature record in Las Vegas, Nevada, and a new highest March temperature ever recorded in the United States near Martinez Lake, Arizona. Multiple daily and monthly records were also broken across parts of Nevada, California, and Arizona, while authorities in Phoenix closed some hiking trails because of heat risk.

  • Early-season heatwave intensifies across western United States, Extreme Heat Warnings issued

    An anomalously early-season heatwave intensified across the western United States on March 18, 2026, with Extreme Heat Warnings in effect for parts of the Desert Southwest and temperatures forecast to expand east into the Rockies and Great Plains by March 20. Highs are expected to reach 40–44°C (104–112°F) in the hottest desert regions, with numerous daily and some monthly March records likely to be broken.

  • Severe multi-state heatwave drives extreme bushfire risk across southern Australia

    Australia is enduring one of its most intense heatwaves since the 2019–20 Black Summer, with extreme temperatures, strong winds and dry lightning fuelling catastrophic fire danger across multiple states. Emergency-level bushfires have been reported in South Australia and Victoria, while BOM forecasts indicate the threat will intensify through Friday, before cooler air reaches southern regions at the weekend.

  • Hazardous heat indices expected to exceed 43.3 °C (110 °F) from Plains to Southeast, dangerous heat building in the West

    The National Weather Service has forecasted hazardous heat spreading from the Plains through the Mississippi Valley to the Southeast starting this week and continuing into the next. High temperatures combined with high humidity are expected to produce dangerously high heat indices, potentially exceeding 43.3 °C (110 °F).

  • Intense, long-duration heatwave affecting SE Europe

    Southern and eastern Europe have endured a prolonged heatwave since early July, with temperatures forecast to remain high for at least another two weeks. The most intense heat was felt across the Balkan Peninsula and eastern Europe, where daily temperatures exceeded 40 °C (104 °F) in many areas. The Mediterranean Sea has also seen unprecedented warmth, with water temperatures reaching 30 °C (86 °F) in some areas.