Inland heat is coming to put an end to comfortable Bay Area week

Warmer temperatures are expected this week, with parts of the Bay Area nearing 100 degrees by Wednesday afternoon. Warmer temperatures are expected this week, with parts of the Bay Area nearing 100 degrees by Wednesday afternoon. Photo: NWS Bay Area Photo: NWS Bay Area Image 1 of / 24 Caption Close Inland heat is coming to put an end to comfortable Bay Area week 1 / 24 Back to Gallery

A string of days with moderate or even below-average temperatures is expected to end this week as a warmup that started Sunday will push inland temperatures above normal by Wednesday, according to the National Weather Service.

Coastal morning clouds gave way to largely clear skies across most of the region over the last few days, bringing moderate and pleasant temperatures to the crowds at Outside Lands.

On Saturday, Livermore was a full seven degrees below normal for the season while Monterey was 10 degrees above normal, according to NWS. A change began Sunday that should push the weather pattern back to a more traditional split between the foggy coast and hot temperatures in the inland valleys.

"Look for temperatures to be 5 to 10 degrees above seasonal averages inland by Wednesday. Coastal temperatures will be slightly cooler as onshore flow persists," the National Weather Service wrote on Twitter.

ALSO: Warm temps become a highlight of Outside Lands 2019

A high-pressure system settling in to the area will bring temperatures above 100 degrees to much of the Central Valley by Wednesday with San Jose and Santa Rosa spiking into the mid or high 90s. San Francisco will warm up from a high of around 73 Monday to about 77 Wednesday before cooling slightly on Thursday.

Bill Disbrow is an SFGATE Senior Digital Editor. Contact: bill.disbrow@sfgate.com