San Francisco woke to a gray, marine-layer ceiling and a cool 54°F today, with the ocean air keeping a lid on the warmth. The city is expected to stay on the cool side, with afternoon highs only reaching the low 60s before clouds hang on into the evening and a shot at light rain moves in late tonight.
What To Expect Today And Tonight
Look for a mostly cloudy day with a high near 63°F and west-southwest winds around 5-10 mph that should ease overnight. Rain chances stay low through most of the afternoon, then tick up tonight, with roughly a 30% chance of light rain tomorrow, according to the National Weather Service.
Where It Might Actually Rain
Most San Francisco neighborhoods will see only drizzle or a few hundredths of an inch. The real action, such as it is, will favor higher terrain where orographic lift can extract more moisture from the clouds. The Santa Cruz Mountains, the East Bay Hills and the Santa Lucia Range are most likely to pick up around 0.1-0.2 inches, with a modest chance of localized amounts up to about 0.5 inch in a higher-end scenario. Thunderstorms remain unlikely but not completely off the table.
Wind, Fog And The Commute
Morning stratus and patchy fog are possible across the North Bay valleys and along the coast, while breezy southwest winds pick up into the afternoon. Higher ridges and mountain gaps could see gusts of 25-35 mph. For most city commutes, though, showers should stay on the light side, meaning slick streets and wet bike lanes rather than widespread closures.
Looking Ahead
Showers should taper tomorrow afternoon, and then a warmer, drier pattern starts to build in early next week. Highs are expected to climb into the mid-60s next Monday and near 70°F by midweek.
If you are out tonight, a light rain jacket is a smart call, and a little extra caution on the roads would not hurt once the pavement turns slick. We will update readers if shower coverage or winds trend higher.
