Dangerous Heatwave Across the Western U.S; Hot and Humid in the Southeast and Mid-Atlantic

A heatwave is poised to bring record-breaking temperatures across the Western United States through the weekend. Triple digit high temperatures are expected as Excessive Heat Warnings are in effect. Hot and humid conditions will spread into the Southeast and Mid-Atlantic through the weekend and into next week. Heat index values up to 110 degrees will be possible. Read More >

Click a location below for detailed forecast.

Last Map Update: Fri, Jul 5, 2024 at 7:48:22 pm PDT

Watches, Warnings & Advisories

Zoom Out

National Weather Service San Francisco Bay Area, CA

National Weather Service San Joaquin Valley, CA

Excessive Heat Warning

Red Flag Warning

Heat Advisory

Small Craft Advisory

Excessive Heat Watch

Fire Weather Watch

Heatwave Hazards

Heat Safety Tips

A long duration heatwave will bring a moderate to major heat risk across the Sierra and western Nevada through the middle of next week. An Excessive heat Warning goes into effect Saturday through Wednesday for western Nevada. A Heat Advisory goes into effect Saturday through Wednesday for the Sierra and NE California. Be sure take your heat safety precautions!