Halloween weekend forecast: a dry week, then 20–30% rain chances Saturday night into Sunday
The National Weather Service table shows highs near 59–63 on Halloween and the first rain chances of the week.
By the Bay Area Brief staff · Edited by Seamus McKenna · · 2 min read
Fog rolling over San Francisco. Photo: Brocken Inaglory / Wikimedia Commons, CC BY-SA 3.0 (cropped, resized and color-graded). Archive photo of the area; not a photo of the events in this story.
The National Weather Service's Bay Area forecast table, issued at 3:01 p.m. Monday, shows zero chance of rain Tuesday through Friday. Small chances arrive for Halloween weekend.
San Francisco: Saturday 51/59, 20% chance Saturday and Saturday night. Sunday 49/62, 30% overnight Saturday into Sunday.
San Jose: Saturday 44/61, 10–20%. Sunday 43/63, 20% overnight.
Santa Rosa: Saturday 36/62, 10–20%.
Hoodline reports that fog has returned to San Jose and that the pattern is turning cooler. Trick-or-treaters should plan for a cool, partly cloudy evening. Rain chances are highest overnight.
Sources
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A slow-moving low off the coast is expected to bring the Bay Area its first meaningful rain since May, mostly from midday Wednesday, Oct. 21, into early Thursday. The National Weather Service says the South Bay, Peninsula and Central Coast are favored, with thunderstorms possible near Big Sur.
After a cool start to the week, the National Weather Service expects highs 10 to 15 degrees above normal Thursday through Saturday, with the Santa Clara, East Bay and North Bay valleys reaching the 80s and 90s and fire weather turning elevated as the air dries out.
New tow vehicles, trailers, inflatable boats and protective gear are going to local fire departments whose teams can deploy anywhere in the state when floods hit.
