Extreme heat and humidity will affect large portions of the Southeastern United States from July 27 to 31, 2025, with over 30 million people under Level 4 Extreme HeatRisk alerts at the peak of the heatwave.
NOAA issued extreme heat alerts for over 90 million people across the Mid-Mississippi Valley and Mid-South on July 21, 2025, as a prolonged, dangerous heat wave continues across central and southeastern United States.
Two heat-related deaths were reported in Texas and Missouri between June 21 and 23, 2025, as a prolonged and intense heat wave driven by a persistent heat dome engulfed large parts of the central and eastern United States. Extreme heat will linger in the Ohio Valley through Friday, then we will finally see some relief from the heat this weekend.
A heat dome settled over the United States beginning June 23, 2025, driving record-breaking temperatures across the Northeast and Mid-Atlantic. More than 245 million people experienced daytime highs above 32 °C (90 °F), with 33 million facing extreme heat above 38 °C (100 °F) by June 24. Cities like New York and Philadelphia saw historic highs and record-warm nights, leading to heat advisories and health warnings across 2/3rd of the US states.
Camp Mabry broke a 100-year-old daily heat on Thursday, May 15, 2025, as an early-season heat wave caused multiple daily heat records to break across south-central Texas. The heat wave is forecast to continue through the weekend into the next week, with some areas expected to see the highest May temperatures on record.
An unseasonal heatwave is forecast to bring record-breaking temperatures of up to 44.5°C (112°F) to south-central Texas this week, prompting heat advisories across the region.
Las Vegas recorded its highest daytime temperature on Sunday, July 7, 2024, when the mercury reached 48.9 °C (120 °F) at the Harry Reid Airport. The extreme heat in the region claimed 2 lives and left one hospitalized.
NWS Weather Prediction Center is forecasting record-breaking heat to expand from the Midwest and Great Lakes to the Northeast this week, potentially lingering through early next week. The duration of this heat wave is notable and potentially the longest experienced in decades for some locations.
Southwestern U.S. is bracing for another dangerous heat wave, just a week after the region battled scorching temperatures. Excessive Heat Warnings are in effect for over 9 million people.
On June 28, 2023, an intense heatwave responsible for at least 13 deaths spread across the Southeast US, extending the reach of official warnings about hazardous temperatures. This comes as California anticipates its first significant heatwave of the year, and Texas faces record-high power demand due to the extreme conditions.
