San Francisco started today on the cool and muggy side, with temperatures hovering around 54°F and low clouds hugging the shoreline. Inland spots should see the sun punch through by midday, nudging highs into the low 70s, while the coastal neighborhoods and the western side of the city hang onto the gray, cooler air a bit longer. West winds stay on the light side this morning, then pick up slightly through the afternoon near the bay.
Afternoon Warmth, Morning Marine Layer
A modest marine layer keeps the immediate coast, along with neighborhoods like the Sunset and Richmond, socked in through mid-morning. Inland districts, meanwhile, are expected to warm to about 68-71°F by afternoon. West winds should run roughly 3-9 mph, with a few higher gusts near the waterfront. Late in the afternoon, look for temperatures to slip a few degrees as that marine layer tries to creep back in.
Late-Week Shift: Rain and Thunderstorms
From tomorrow until the weekend, the setup flips as a slow-moving Pacific cutoff low inches closer to the coast. There is a slight chance of light rain tomorrow, with rain becoming likely after about 11 PM and showers continuing into Friday morning. Showers and thunderstorms are most likely from Friday, April 10, through Sunday, April 12, and could bring brief heavy downpours, lightning, erratic wind gusts and small hail. Rainfall totals are expected to stay on the modest side, around 0.5 to 1.0 inches across the city, with higher amounts up to around 2 inches in the coastal ranges, according to NWS San Francisco.
Travel, Outdoor Plans and Boating
Commuters should find mainly dry conditions through Wednesday, but anyone planning outdoor events later in the week will want a wet-weather backup ready to go. Thunderstorms could drop sudden bursts of heavy rain, leading to localized street flooding, and sharp wind gusts, so event organizers and outdoor workers should keep a close eye on updated forecasts and know where to shelter if storms roll through. Boaters and small-craft operators should check marine advisories before heading out, as winds are expected to turn southwest Thursday and stay gusty into the weekend.
