But even in summer, we have the marine layer with a lot more usually to the onshore flow,” National Weather Service meteorologist Lamont Bain said Wednesday. “This time, it’s been mostly sunny with offshore flow from the north and that’s keeping the marine layer and those things at bay.

Daytime highs will be mostly in the high 60s to low 70s on the coast, low 60s to low 70s around the bay, and mid 60s to high 70s inland. Overnight lows will be mostly in the low 40s, with some areas dipping into the 30s.