National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

12NM W San Francisco CA

Marine Point Forecast

[NOTICE]

    • New Year's Day

      New Year's Day:SE wind 18 to 20 kt becoming S in the morning. Showers, with thunderstorms also possible after 1pm. Mixed swell...WNW 3 ft at 12 seconds and S 2 to 3 ft at 8 seconds. Wind waves around 3 ft.

      S 20kt
      5ft

    • Tonight

      Tonight:S wind 16 to 18 kt. Showers, mainly before 10pm. Mixed swell...W 3 ft at 11 seconds and SSW 3 ft at 7 seconds. Wind waves around 3 ft.

      S 18kt
      5ft

      Small Craft Advisory
      Small Craft Advisory

    • Friday

      Friday:SSE wind 22 to 26 kt, with gusts as high as 34 kt. Showers likely, mainly after 10am. Mixed swell...W 2 to 3 ft at 11 seconds and S 1 to 2 ft at 7 seconds. Wind waves 4 to 5 ft.

      SSE 26kt
      5ft

      Gale Warning
      Gale Warning

    • Friday Night

      Friday Night:S wind 30 to 33 kt, with gusts as high as 42 kt. Showers, with thunderstorms also possible after 1am. Mixed swell...WNW 1 to 2 ft and S 7 ft. Wind waves 5 to 6 ft.

      S 33kt
      7-9ft

      Gale Warning
      Gale Warning

    • Saturday

      Saturday:S wind 28 to 32 kt, with gusts as high as 40 kt. Showers. Mixed swell...WNW 2 ft and S 6 to 8 ft. Wind waves 5 to 6 ft.

      S 32kt
      8-10ft

    • Saturday Night

      Saturday Night:S wind 25 to 27 kt, with gusts as high as 33 kt. Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Mixed swell...WNW 3 ft and SSW 7 ft. Wind waves around 5 ft.

      S 27kt
      8-9ft

    • Sunday

      Sunday:S wind 21 to 24 kt, with gusts as high as 30 kt. Showers before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then showers after 4pm. Mixed swell...W 6 ft and SW 5 to 7 ft. Wind waves 4 to 5 ft.

      S 24kt
      9ft

    • Sunday Night

      Sunday Night:SSW wind 16 to 19 kt. Showers, with thunderstorms also possible after 10pm. Mixed swell...W 4 ft and SSW 5 to 6 ft. Wind waves around 3 ft.

      SSW 19kt
      7-8ft

    • Monday

      Monday:SSW wind 16 to 19 kt. Showers. Mixed swell...W 3 to 4 ft and SSW 4 ft becoming SW. Wind waves around 3 ft.

      SSW 19kt
      6ft


Associated Zone Forecast which includes this point

Last Update: 7:59 am PST Jan 1, 2026
Forecast Valid: 8am PST Jan 1, 2026-6pm PST Jan 7, 2026

View Nearby Observations

Detailed Forecast


New Year's Day
SE wind 18 to 20 kt becoming S in the morning. Showers, with thunderstorms also possible after 1pm. Mixed swell...WNW 3 ft at 12 seconds and S 2 to 3 ft at 8 seconds. Wind waves around 3 ft.
Tonight
S wind 16 to 18 kt. Showers, mainly before 10pm. Mixed swell...W 3 ft at 11 seconds and SSW 3 ft at 7 seconds. Wind waves around 3 ft.
Friday
SSE wind 22 to 26 kt, with gusts as high as 34 kt. Showers likely, mainly after 10am. Mixed swell...W 2 to 3 ft at 11 seconds and S 1 to 2 ft at 7 seconds. Wind waves 4 to 5 ft.
Friday Night
S wind 30 to 33 kt, with gusts as high as 42 kt. Showers, with thunderstorms also possible after 1am. Mixed swell...WNW 1 to 2 ft and S 7 ft. Wind waves 5 to 6 ft.
Saturday
S wind 28 to 32 kt, with gusts as high as 40 kt. Showers. Mixed swell...WNW 2 ft and S 6 to 8 ft. Wind waves 5 to 6 ft.
Saturday Night
S wind 25 to 27 kt, with gusts as high as 33 kt. Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Mixed swell...WNW 3 ft and SSW 7 ft. Wind waves around 5 ft.
Sunday
S wind 21 to 24 kt, with gusts as high as 30 kt. Showers before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then showers after 4pm. Mixed swell...W 6 ft and SW 5 to 7 ft. Wind waves 4 to 5 ft.
Sunday Night
SSW wind 16 to 19 kt. Showers, with thunderstorms also possible after 10pm. Mixed swell...W 4 ft and SSW 5 to 6 ft. Wind waves around 3 ft.
Monday
SSW wind 16 to 19 kt. Showers. Mixed swell...W 3 to 4 ft and SSW 4 ft becoming SW. Wind waves around 3 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 37.78°N 122.67°W
Last Update: 7:59 am PST Jan 1, 2026
Forecast Valid: 8am PST Jan 1, 2026-6pm PST Jan 7, 2026
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