San Francisco started today with cool, damp air, with the official station at SFO around 51°F, but the day is shaping up to be a pretty solid one for anyone itching to get outside. Mostly sunny skies will make for a pleasant afternoon, with inland areas climbing into the low to mid 70s while the city and coast stay comfortably mild. The calm stretch will be short-lived, though, as rain chances creep back in late Sunday and a more organized system moves through Monday into Tuesday.
Foggy Mornings, Sunny Afternoons
Today will be dominated by sunshine, with highs near 74°F inland and mid 60s closer to the water, along with light southwest breezes generally under 10 mph. Overnight, patchy low clouds and valley fog are likely to reform and return tomorrow morning again, cutting visibility near the waterfront and bridge approaches. The National Weather Service has the full breakdown on the marine layer and the timing of those afternoon winds.
Rain Returns Monday Into Midweek
Tomorrow, there is a chance of light showers after about 11 PM, with the odds increasing next Monday, when showers are likely, and many spots could see new rainfall totals of roughly a half to three-quarters of an inch. Next Monday night into Tuesday may bring steadier showers, with a few embedded thunderstorms, and training bands could set up heavier bursts of rain. The Weather Prediction Center is highlighting parts of the North Bay in an excessive rain outlook for early next week. That bumps up the risk of minor, localized flooding in low-lying parts of Sonoma County and nearby valleys, and drivers should plan on puddled roads and slower traffic.
Impacts And Planning
Wet roads and slower commutes are likely next Monday morning and again Tuesday afternoon, so if you can shift outdoor plans today or tomorrow, you will be in better shape. Mariners, ferry riders and outdoor workers should keep an eye on carrier advisories and updated forecasts as southerly winds pick up from next Monday through Tuesday. Bring an umbrella, build in extra travel time, and check official alerts, and we will update if any watches or warnings are issued.
