San Francisco rolled in today with mostly clear skies, cool air, and temperatures around 52°F just after sunrise. By this afternoon, expect plenty of sun and a high near 67°F, with a light west‑southwest breeze picking up later in the day. Neighborhoods right on the water may stay a few degrees cooler if the marine layer lingers, while inland parts of the city may edge slightly warmer. A gradual cooling trend is set to kick in tomorrow and carry into the weekend.
Afternoon Winds And Temperatures
Skies are expected to clear through mid‑morning as the sun takes over. West‑southwest winds should run about 2–10 mph this afternoon, with shoreline spots slipping back into the low 60s by late day. Inland areas will be milder, but nothing out of line for late May, with downtown topping out in the mid 60s.
Boaters and mariners will want to pay closer attention than most. A Small Craft Advisory is in effect for the outer waters north of Pigeon Point into early Friday, according to the National Weather Service.
Foggy Mornings, Sunny Afternoons
A shallow marine layer has set up in Monterey Bay and has pushed up the Salinas Valley, so the immediate coast and parts of western San Mateo County could see low clouds or patchy fog early. Most San Francisco neighborhoods should shake off the gray by midday and turn sunny, with VFR conditions expected at local airports this afternoon. Winds may tick up slightly this evening, but should stay on the lighter side for most city blocks.
Fire Weather And Safety
Warm, dry conditions away from the shoreline are raising fire‑weather concerns for the interior Bay Area and Central Coast. If you are in hotter, drier foothill or valley locations, avoid running lawn mowers over dry grass, skip equipment that can spark, and be careful with cigarettes and towing chains that might drag and throw sparks. Local rules still apply, so be aware that open burning may require a permit or be restricted in some areas.
Legal Implications
Open burning rules and permit requirements are set by local agencies and the state. Check the current burn‑permit status with CAL FIRE before you plan any outdoor burn. Violating burn bans or burning without a required permit can lead to fines and civil liability if a fire escapes.
Weekend Outlook
Starting Friday, a gradual cooldown is expected as the upper‑level ridge weakens. Temperatures should slide closer to seasonal norms over the weekend, with a thicker marine layer possible along the coast. Looking ahead, there is a low‑confidence chance of light rain early next week from a Pacific system, although most forecast models currently keep any measurable precipitation north or east of the city.
In the meantime, plan on a sunny, mild Thursday. Layers will come in handy for the cool, foggy early hours, and it is worth checking official updates if you are heading to the coast or considering any open burning. For the latest advisories, consult the National Weather Service and local fire authorities before you head out.
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