Extreme Heat Overspreads the Central and Southern U.S., Pushing East Through Midweek; Severe Weather and Excessive Rain for Portions of the Upper Midwest

Dangerous heat is expected across portions of the Central and Southeast U.S. through July. Severe storms for parts of the northern Plains & upper Midwest tonight & Wednesday- threats include a few tornadoes, damaging winds & excessive rain. Heavy rain may impact portions of the Southeast and Southwest into tonight. A tropical disturbance brings heavy rain to Guam & the Marianas through Friday. Read More >

Click a location below for detailed forecast.

Last Map Update: Tue, Jul 22, 2025 at 4:18:32 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

Zoom Out

National Weather Service Los Angeles, CA

Small Craft Advisory

The Chance of reaching 90 degrees this Week

Chance for Sierra Thunderstorms Wednesday

Always be Weather-Ready for the Outdoors

Isolated Dry Thunderstorms

The chance of having San Joaquin Valley high temperatures reaching 90 degrees will drop during the week as we experience a cool down. A disturbance moving through the Pacific Northwest allowed cooler marine air into the region as the probability of reaching 90 degrees falls below 80 percent, at times, this week.

An upper level system moving through the Pacific Northwest this week will bring a 10 to 30 percent chance for afternoon thunderstorms along the Sierra crest as Pacific moisture moves over the area. The greatest probabilities for Wednesday afternoon are expected in the high Sierra in and around Yosemite National Park. Practice lightning safety and stay weather aware if visiting the area.

The Great Outdoors are wondrous, awe inspiring, and both physically and mentally beneficial to experience. However, the Great Outdoors bring with them various weather and environmental hazards that can ruin your adventure and even be very dangerous. It is important to know your risks, take action to prepare and minimize those risks, and serve as an example for others to emulate. Here are some fundamental actions you can take and safety content you can share with family, friends, and across social media.

Isolated Dry Thunderstorms are forecast by the Storm Prediction Center for Yosemite National Park, and the high Sierra of extreme eastern Mariposa, Madera and Fresno Counties, on Wednesday. Given the state of fuels in these areas, some potential for new ignitions exists.