San Francisco woke up to clear skies and a brisk 51°F this morning, but a notable warmup is rolling in for the rest of the week. Interior neighborhoods will see the biggest shift, with afternoon readings climbing well above typical March levels as the days progress.
Week Ahead: Near-Record Warmth Possible
The National Weather Service is calling for highs in the low 70s today and tomorrow, followed by a steady climb toward near 80°F on Sunday and the mid 80s by Monday and Tuesday. Forecasters note a widespread minor heat risk through Saturday, with pockets of moderate heat risk from Sunday through Tuesday, particularly away from the immediate coast, according to the National Weather Service.
Coastal Versus Interior
The usual split is expected to show up in full force. A shallow marine layer will keep the immediate coast and bayfront cooler, while inland hills and neighborhoods warm fastest in the afternoon. Overnight lows should stay in the low 50s for most areas thanks to persistent onshore flow, which means evenings will still feel relatively comfortable even as daytime heat ramps up.
Winds, Seas And Boaters
Offshore waters are in for fresh to strong northerly breezes and choppy seas. Small Craft Advisories may affect portions of the central coast and offshore areas through Thursday, so recreational boaters should check the latest marine forecast before heading out. Afternoon gusts will be strongest near exposed shoreline spots, while most neighborhoods are expected to see light north-northwest winds around 2 to 7 mph.
How To Stay Cool
If you are sensitive to heat or do not have air conditioning, it is a good idea to shift outdoor plans to mornings or evenings, drink water frequently, and use fans or public cooling locations when needed. The City of San Francisco maintains a list of cooling centers and heat resources for residents; see the City of San Francisco for locations, hours, and tips.
