Southern California: Heat Advisories in Effect

news image
Top Stories
21 May 2025 11:45 PM

CALIFORNIA - The National Weather Service has issued a Heat Advisory through Thursday evening for southern California, including Santa Barbara, Ventura, and Los Angeles counties. Temperatures in these regions are expected to reach up to 100°F, with some locations potentially breaking record highs.

Areas that are expected to experience the most intense heat are the San Fernando, San Gabriel, and Santa Clarita valleys, where high temperatures may climb to 90 to 100°F over the next couple of afternoons. Even areas along the coast may see unusually high temperatures.

Here's a look at our forecasted temperatures for the Thursday to Saturday timeframe in southern California, the Mohave Desert, and into Arizona.

In addition to the heat, there is an increased fire risk. The combination of hot temperatures, lower humidity, and higher winds has led to fire weather alerts for Thursday in the San Joaquin Valley.

This heat wave is expected to persist through Thursday, with some relief this weekend as temperatures are expected to moderate. For the latest updates on weather conditions and advisories, be sure to join us on WeatherNation.

All Weather News
More
First Disturbance of the 2026 Atlantic Hurricane Season Identified in the Gulf

First Disturbance of the 2026 Atlantic Hurricane Season Identified in the Gulf

AtlanticThe first disturbance out into the At

12 Jun 2026 7:35 PM
Record Heat Fuels Severe Storms in the Northeast

Record Heat Fuels Severe Storms in the Northeast

Summer heat has been building around the East

12 Jun 2026 7:30 PM
Tropical Moisture to Raise Flooding and Severe Concerns Across Central U.S.

Tropical Moisture to Raise Flooding and Severe Concerns Across Central U.S.

A surge of tropical moisture streaming north

12 Jun 2026 7:25 PM
El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño Forms, Very Strong El Niño Likely Late 2026

El Niño has arrived! It didn't take long for

12 Jun 2026 11:15 AM
East & West Coast Weekend Heat

East & West Coast Weekend Heat

Heat advisories have been expanding across th

12 Jun 2026 10:00 AM
Tropical Moisture Brings Increased Flood Risk

Tropical Moisture Brings Increased Flood Risk

With multiple rounds of heavy downpours acros

9 Jun 2026 10:40 AM
Severe Storms Repeat Daily Across the Plains

Severe Storms Repeat Daily Across the Plains

Severe storms developed today, as a particula

8 Jun 2026 1:25 AM