Rain, Thunderstorms, Cold: Bay Area Weather Forecast For Halloween And Beyond

SAN FRANCISCO — A series of cold fronts will filter rain showers and chilly air into the Bay Area over the next few days but a break in the action should keep things dry for most on Halloween night, according to the latest forecasts.

Temperatures had already taken a dive by Wednesday morning, and forecasters expect they will stay unseasonably cool through Saturday. Afternoon highs will top out in the 60s for most, and dip into 50s on the coast, while overnight lows tumble into the 40s.

The first round of rain showers was on track to begin across the region Wednesday afternoon ahead of a stronger system due to welcome November. Forecasters said an intermission between the systems should keep most of the rain away over Halloween.

"Most locations will see accumulations around a tenth of an inch but favored locations across the North Bay may see locally higher totals up to half an inch," NWS Bay Area said Wednesday. "Outside of the North Bay, where light drizzle will persist, conditions will dry out by Thursday evening before a third cold frontal system arrives Friday. This third system will bring more widespread rainfall, up to half an inch, throughout the Bay Area and Central Coast while higher totals between half an inch to an inch are expected across the North Bay."

Forecasters also noted a small chance for thunderstorms to develop across the Bay Area and Central Coast Friday and Saturday and warned that gusty onshore winds will pick up as the cold front passes.

While the pattern shift should herald the return of warmer weather Sunday, the weather service said elevated winds could renew fire concerns around the beginning of next week. More details will be shared as the extended forecast takes shape.