Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

MIDDLE PEAK (MDEC1)

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

NA

61°F

16°C

Humidity 40%
Wind Speed NNW 10 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 09 Dec 09:36 PM PST
Extended Forecast for

San Anselmo CA

  • Tonight

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

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog between 9am and 10am.  Otherwise, mostly sunny, with a high near 56. Light northeast wind.

    High: 56 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 61. Light northeast wind.

    High: 61 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45. Light north northeast wind.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60.

    High: 60 °F

    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 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 44. Calm wind.
Wednesday
Patchy fog between 9am and 10am. Otherwise, mostly sunny, with a high near 56. Light northeast wind.
Wednesday Night
Mostly clear, with a low around 45. Calm wind.
Thursday
Sunny, with a high near 61. Light northeast wind.
Thursday Night
Mostly clear, with a low around 45. Light north northeast wind.
Friday
Sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 44.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 59.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 47.
Monday
A chance of rain. Partly sunny, with a high near 60.
Monday Night
A chance of rain. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Partly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
San Anselmo CA
 37.97°N 122.58°W (Elev. 558 ft)
12:26 pm PST Dec 9, 2025
9pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database