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 8:32:18 pm PDT

Watches, Warnings & Advisories

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National Weather Service San Joaquin Valley, CA

National Weather Service Los Angeles, CA

Excessive Heat Warning

Red Flag Warning

Heat Advisory

Small Craft Advisory

Marine Weather Statement

Excessive Heat Warning and Heat Advisory

Red Flag Warnings

Prolonged Heat Wave In Progress

Cold Water Safety Tips

An Excessive Heat Warning and Heat Advisory is in effect until Wednesday, July 10th at 11 PM.

A Red Flag Warning is in effect through 5 AM Friday for the Marin and Sonoma Coastal Ranges and through 9 PM Saturday for the North Bay Interior Mountains, Santa Cruz Mountains, and East Bay Hills. A Red Flag Warning will be in effect 9 AM Friday through 9 PM Saturday for the Interior Central Coast including the Southern Salinas Valley.

There's a major to EXTREME risk of heat related impacts to the general population including, including heat stress or illness to people and animals. The HIGH potential for prolonged excessive heat will translate to an increased risk for life-threatening heat exhaustion and heat stroke! Be sure to hydrate with plenty of water. Wear light clothing, use AC or visit a cooling center and never leave pets of children in cars! For additional heat safety tips, visit www.weather.gov/safety/heat.

Thinking of flocking to the coast to beat the heat? Cold water shock can be just as severe and dangerous from water temperatures of 50-60°F as it is from water at 35°F. For more information on cold water safety tips, visit weather.gov/safety/coldwater