Heat wave to grip California: Here's where the Bay Area will sizzle

California is forecast to bake amid a potent heat wave this week, and while the hottest temperatures in Northern California will be in the Central Valley and Southern California, the high temperatures will bleed into the interior valleys of the Bay Area.

Widespread high 90s to low 100s are expected in inland areas Wednesday and Thursday, while the coast and locations along the bay will remain in the 70s to 80s with a light ocean breeze, according to the National Weather Service.

Thursday is expected to be the hottest day of the week.

"Wednesday, Thursday and Friday is when the temperatures really start to ramp up," said David King, a forecaster with the weather service. "The marine layer isn’t expected to entirely disappear. That will really help out for places like San Francisco and the East Bay shorelines."

It felt a bit like Hawaii in the San Francisco Bay Area Monday morning.

The air was warm and sticky with a drizzly marine layer pushing inland amid mild temperatures on Sunday and a similar scenario set up this morning.

"It is muggy today in San Francisco," wrote one Twitter use. "MUGGY. I protest!" 

A trough of low pressure dropping down from the Pacific Northwest coast drove clouds into the region and sidewalks were damp in many areas Monday morning. Relative humidity was 84% in San Francisco and 86% in Oakland. 

The clouds will dissipate over most inland areas today with temperatures warming into the 60s to low 70s near the coast to upper 70s or low 80s across the interior, according to the weather service.

Tuesday marks the start of a robust warming trend as high pressure currently parked over the Four Corners region of the Southwestern United States strengthens and expands across California.

The most extreme heat is forecast for interior portions of the...