Bay Area/ San Francisco/ Weather & Environment

Fog Then Fun in the Sun: Cool, Breezy Week Ahead for San Francisco

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Published on August 17, 2026
Fog Then Fun in the Sun: Cool, Breezy Week Ahead for San FranciscoSource: E bailey, CC BY-SA 4.0, via Wikimedia Commons

San Francisco is starting today on the cool side, with temperatures around 57 degrees under mostly cloudy skies before sunshine takes over later in the morning. The city should top out near 68 degrees, with a west-southwest breeze making the afternoon feel brisker than the calendar might suggest. Rain is not expected, so the main weather question is whether you're ready for the classic fog-to-sun wardrobe shuffle.

Clouds Clear As Afternoon Winds Pick Up

Patchy coastal fog and light drizzle remain possible near the shoreline, while most of the city should see improving skies by late morning. The National Weather Service says the marine layer is shallower than it was over the weekend, which should allow more sunshine into inland neighborhoods.

Today's west-southwest winds will run about 5 to 13 mph, with gusts reaching 18 mph. The breeziest stretch arrives during the afternoon and evening, when exposed spots near the waterfront, bridges and higher elevations could feel notably cooler.

A Mild Warm-Up Gives Way To Cooler Days

Tomorrow and Wednesday bring a modest warm-up, with highs near 69 and 70 degrees, respectively, while overnight lows settle around 58 degrees. Thursday stays close to that range with a high near 69, before temperatures ease back to about 66 on Friday and Saturday.

Next Sunday looks slightly milder again, with a high near 67 and mostly sunny skies. The extended forecast remains dry, with mostly sunny or partly sunny afternoons and mostly cloudy nights through the weekend.

Coastal Fog And Offshore Winds Stay In The Mix

Shoreline neighborhoods may hold onto low clouds longer than the rest of the city, and coastal stratus could briefly push inland during the afternoon. There are no watches or warnings for San Francisco, though a Small Craft Advisory is posted for waters from Point Arena to Point Reyes 10 to 60 nautical miles offshore from 3 AM to 3 PM tomorrow.