Heat’s Last Stand: San Francisco Basks Before Big Cooldown Hits Bay

San Francisco gets one more relatively warm, mostly sunny day today before a noticeable cooldown takes over. Highs could reach 74 degrees, but a slight chance of light rain—and an outside chance of a morning thunderstorm—adds a wrinkle to the otherwise pleasant forecast.

Thursday Starts Mild Before Winds Pick Up

This morning may bring low clouds near the coast, with skies expected to turn mostly sunny as the day progresses. The National Weather Service puts the chance of rain at 20%, with southwest winds increasing from a few miles per hour in the morning to around 10 mph during the afternoon.

Temperatures should ease back toward 71 degrees late in the day, then slip to around 59 degrees Thursday night. Evening winds could gust up to 20 mph, especially in exposed neighborhoods and along the waterfront.

Friday Brings Cooler, Cloudier Conditions

Tomorrow will be a sharper turn, with a slight chance of rain before 11 AM, mostly cloudy skies, and a high near 68 degrees. West-southwest winds will run 6 to 16 mph, with gusts reaching 23 mph.

The latest forecast marks a substantive shift from the sunny weekend setup covered in an earlier Hoodline forecast, adding shower chances and a longer cooling trend into next week.

Sunny Weekend Still Feels More Like Fall

Saturday and next Sunday should be mostly sunny, but highs will stay near 66 degrees and nighttime temperatures will fall into the mid-50s. West and west-southwest winds will remain noticeable, so beach and park visitors may want more than a token jacket.

Next Monday looks like the coolest day of the stretch, with a high near 61 degrees and winds up to 16 mph. The forecast gradually rebounds to highs near 63 degrees next Tuesday and 65 degrees next Wednesday, while rain chances remain minimal.

Coastal And Outdoor Plans

Light layers should cover most city plans, with an extra windbreaker useful for evening walks, bridge crossings and waterfront outings. Boaters should also note that a Small Craft Advisory covers portions of the nearby coastal waters through 9 AM on Saturday, according to the National Weather Service.