• Extreme heat forecast for weekend triggers Extreme Heat Watch in Southwest U.S.

    The National Weather Service issued an Extreme Heat Watch for parts of southern Arizona and far southeastern California from the morning of June 14 through the evening of June 16, 2025. Affected areas include the lower deserts of Arizona and southeastern California, where daily maximum temperatures are expected to reach 40°C to 46°C (104°F to 115°F).

  • High pressure ridge drives record heat in western USA

    A ridge of high pressure over the western United States is bringing unusually hot and dry conditions, with record temperatures expected from May 30 to 31, 2025. The hottest areas include southern Nevada, southeast California, and northwest Arizona. Cooler air and possible light rain from a Pacific cold front and Tropical Storm Alvin are forecast to arrive by early June.

  • Phoenix sets new heat record with above 37.8 °C (100 °F) for 100 days, Arizona

    On September 3, 2024, Phoenix shattered its previous heat record after enduring 100 consecutive days of temperatures above 37.8 °C (100 °F). The relentless heat, which began on May 27, continues to wreak havoc across the region, contributing to a surge in heat-related deaths and posing significant risks to vulnerable populations.