textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 108 PM PST Fri Jan 16 2026

- Cool mornings, but very mild afternoons into the weekend

- Morning fog across the delta and interior valleys

SHORT TERM

Issued at 108 PM PST Fri Jan 16 2026 (This evening through Saturday)

Once again, the North Bay Valleys have cleared out of the fog with some still lingering across the far interior East Bay Valleys. With high pressure aloft, it is another very warm day across the region. This is especially so across the Central Coast with temperatures already in the upper 60s to low 70s. In the higher terrain across all of the region, temperatures range from the mid 70s to low 80s.

Tonight, expecting another round of fog to develop across the West Delta, North Bay Valleys, and East Bay Valleys as similar conditions are likely.

Tomorrow, similar conditions as today are expected across much of the region as the high pressure largely remains the dominate feature and offshore winds in the higher elevations persist.

LONG TERM

Issued at 1241 AM PST Fri Jan 16 2026 (Saturday through Thursday)

Nice, dry weather will continue for the next several days. Some high clouds will roll in from the south this weekend, which should moderate both max and min temperatures a bit, while producing some colorful sunrises and sunsets. Ensemble cluster analysis shows high confidence that the strong ridge at 500 mb over the Gulf of Alaska will gradually erode over the next 5-7 days. The uncertainty grows beyond the middle of next week, but either zonal flow or a troughing pattern seems more likely than continued ridging. While the change at the surface will be subtle, onshore flow will gradually return, high temperatures will cool a few degrees, and coastal clouds will start creeping back in by the middle of next week. If the pattern becomes more active, there is a chance for very light rain as early as next Thursday, with a stronger signal for more substantial precipitation by the middle of the following week (end of January).

AVIATION

(00Z TAFS) Issued at 438 PM PST Fri Jan 16 2026

Surface high pressure continues over the Great Basin resulting in offshore winds. The WMC-SFO pressure gradient is 11.3 mb and SAC- SFO is 0.6 mb. VFR continues in the 00z TAFs except for areas of hazy conditions reducing surface (and slantwise visibility especially at sunset/sunrise) visibility to MVFR. Patchy fog /VLIFR-IFR/ also developing tonight and Saturday morning.

Vicinity of SFO...VFR. Mainly light wind.

SFO Bridge Approach...Slantwise visibility may be reduced especially at sunset/sunrise, otherwise similar to SFO.

Monterey Bay Terminals...VFR. Light onshore winds becoming east to southeast 5 to 10 knots tonight and Saturday morning, then shifting to onshore 5 to 10 knots late Saturday afternoon.

MARINE

(Tonight through next Thursday) Issued at 409 PM PST Fri Jan 16 2026

Locally breezy winds expected across the San Pablo Bay, the delta, and through the Golden Gate Gap through this weekend. Elsewhere, light northeasterly to northerly winds persist through the forecast period. Light seas continue into early next week before our next round of long period swell arrives and brings light to moderate seas.

MTR WATCHES/WARNINGS/ADVISORIES

CA...None. PZ...None.