Bay Area Cooldown Underway, But The Next Warm-Up Is Coming: Forecast

SAN FRANCISCO — After a holiday heat wave that brought triple-digit temps for some in the Bay Area, NorCal is forecast to flip the script and see afternoon highs trending several degrees below average late in the week.

Some relief already arrived for July 4, and forecasters anticipated cloud cover would creep over coastal areas before sunset and start to spill inland later in the evening — potentially putting a damper on fireworks displays for some.

Stark contrasts in temperatures between coastal and inland communities continued apace Tuesday, including a 20-degree difference in highs Tuesday between Half Moon Bay and San Jose.

According to the National Weather Service, Wednesday should still be on the toasty side further inland, hitting the 80s again around San Jose, while running cooler and cloudier along the coast. Most areas will shave off a few degrees into the early weekend before the next warming trend kicks off.

"An upper-level trough will persist from NorCal into the Pacific Northwest," NWS Bay Area wrote Tuesday. "This will bring steady onshore flow, cool temperatures, and night/morning clouds which will erode towards the coast each afternoon. High temperatures should be around 5 to 10 degrees below the seasonal averages."

Looking further down the line, forecasters are tracking another pattern that should bring more sunshine as a warming trend returns around Sunday and lingers into next week. New climate outlooks issued Tuesday show favorable odds for warmer weather sticking around through the middle of the month for most in the Golden State.