Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

MIDDLE PEAK (MDEC1)

Lat: 37.92778°NLon: 122.58722°WElev: 2339.0ft.

NA

62°F

17°C

Humidity 41%
Wind Speed NNW 14 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 10 Dec 09:36 AM PST
Extended Forecast for

San Anselmo CA

  • Today

    Today: Patchy fog before 10am.  Otherwise, sunny, with a high near 50. Light northeast wind.

    High: 50 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy dense fog before 11pm, then patchy dense fog after midnight.  Otherwise, mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Patchy dense fog before 9am.  Otherwise, sunny, with a high near 54. Calm wind becoming northeast around 5 mph in the morning.

    High: 54 °F

    Patchy Dense
    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the morning.

    High: 56 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, sunny, with a high near 50. Light northeast wind.
Tonight
Patchy dense fog before 11pm, then patchy dense fog after midnight. Otherwise, mostly clear, with a low around 44. Calm wind.
Thursday
Patchy dense fog before 9am. Otherwise, sunny, with a high near 54. Calm wind becoming northeast around 5 mph in the morning.
Thursday Night
Mostly clear, with a low around 44. Calm wind.
Friday
Mostly sunny, with a high near 56. Calm wind becoming northeast around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 62.
Saturday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 45.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 62.
Monday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
San Anselmo CA
 37.98°N 122.55°W (Elev. 197 ft)
12:26 am PST Dec 10, 2025
9am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database