San Francisco woke up today to another gray, low-ceiling morning, with patchy fog filling in the usual low-lying neighborhoods and temperatures hovering around 51°F. Visibility is reduced near dawn, so drivers heading out early should plan to take it slow and give themselves a little extra time.
Foggy Mornings, Sunny Afternoons
The murk will not last all day. Patchy fog is expected to thin out by mid to late morning, opening the door to partly sunny skies and a high near 64°F. By later in the afternoon, readings should settle back into the low 60s.
West winds will pick up to 6–12 mph, making exposed hilltops and bridge approaches feel a bit breezier. The upside is that after the late-morning commute, most of the day looks dry and workable for outdoor plans.
Tonight And Monday
Fog is not done with the city yet. Low clouds may redevelop overnight between about 11 PM and 5 AM, with lows near 51°F. There is a 20–40% chance of light rain in North Bay areas late tonight, while locations south of the North Bay have much lower odds of getting anything beyond drizzle.
A stronger system is set to roll in from Tuesday afternoon into Wednesday, bringing a likely round of rain. Showers, along with a slight chance of a few thunderstorms, are expected from Tuesday night into Wednesday morning.
New rainfall totals could range from a quarter to a half inch in many spots, with coastal areas and higher terrain favored for the higher amounts. Snow levels are expected to fall toward about 5,000 feet.
Out on the water, boaters should be ready for building seas and Small Craft Advisories around exposed coastal waters, and ferry crossings may turn choppy during the heaviest periods. According to the NWS San Francisco, confidence is growing that midweek will be the wettest stretch over the next several days.
What To Do
For now, keep a light rain jacket within reach, and consider shifting any beach time plans inland as the wetter pattern develops. Give yourself extra breathing room on morning commutes when fog hangs around.
If you are heading out on the water, check the latest marine forecasts and respect any Small Craft Advisories before you leave the harbor. A little caution goes a long way when the weather starts to turn.
