San Francisco is in for a classic Saturday, July 18, with partly sunny skies, a high near 66°F, and Karl the Fog doing his usual morning duty along the coast — grab a light jacket if you’re heading out before noon, because the marine layer isn’t in a hurry to leave.
Today’s Setup
Coastal stratus and patchy mist are moving inland this morning, part of the marine layer the National Weather Service says “prevails through the weekend.” Temperatures climb toward a high near 66°F by early afternoon, then actually slip back to around 64°F later in the day as onshore flow reasserts itself. West-southwest wind runs 6 to 13 mph, gusting as high as 18 mph — noticeable out on the Golden Gate but nothing dramatic. Tonight stays mostly cloudy with a low around 54°F.
Best Window To Be Outside
Aim for early-to-mid afternoon if you want the brightest skies, before the fog thickens back up toward evening. Ocean Beach and the Marina will likely stay grayer longer than inland pockets like the Mission or Noe Valley — that’s the Bay Area microclimate split at work. Winds stay light enough for a decent afternoon on the water; anglers dusting off tackle boxes might check the Strike King Crankbaits deal at Bass Pro Shops before heading out.
Fog, Wind, Or Any Bigger Risk
No severe weather is in play locally — there’s no Storm Prediction Center outlook for the area, and the Weather Prediction Center’s slight risk for excessive rainfall is confined to the Southwest and Four Corners, well outside the Bay Area. The real story is clouds: high clouds may drift in today from monsoonal moisture over the Southwest, and mid- and high-level clouds increase further early next week as weakening remnants of Tropical Storm Elida push north, though NWS forecasters expect minimal convective punch from that system here.
What To Wear Or Bring
Layer up. A hoodie or light jacket covers the 50s mornings and evenings, and it’s worth stashing a windbreaker if you’re near the water or the bridge. For more ideas on staying comfortable outdoors this weekend, browse outdoor gear deals.
Tonight’s Show And This Weekend’s Games
Ella Mai brings her “Do You Still Love Me?” tour to Bill Graham Civic Auditorium tonight, July 18 — Get tickets on SeatGeek or Find tickets on StubHub if you’re headed out, and an Ella Mai t-shirt or Ella Mai hoodie doubles as a smart layer once temps dip into the mid-50s after dark. Sunday, July 19, the Oakland Athletics host the Washington Nationals at Sutter Health Park; conditions should stay mild and dry for tailgating, a good excuse to grab an Oakland Athletics jersey or Oakland Athletics fitted cap. Monday, July 20, the Golden State Valkyries take on the Washington Mystics at Chase Center.
Dinner Idea
With that marine-layer chill sticking around into the evening, a warm bowl of pasta or a quick stir-fry is an easy call tonight. Need ingredients? You can order groceries on Amazon and have everything for tonight’s dinner delivered to your door.
Next Few Days
Sunday looks nearly identical — partly sunny, high near 67°F, overnight low around 56°F, same WSW breeze. Clouds build early next week as Elida’s remnants move through, and the NWS expects daytime highs near to slightly above normal through the week, though the marine layer should keep most neighborhoods on the cool side of that trend.
