Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest

Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >

Current conditions at

MIDDLE PEAK (MDEC1)

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

NA

61°F

16°C

Humidity 24%
Wind Speed NW 12 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 15 Dec 02:36 PM PST
Extended Forecast for

San Anselmo CA

  • Tonight

    Tonight: Patchy dense fog after 1am.  Otherwise, increasing clouds, with a low around 49. West northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 49 °F

    Partly Cloudy
    then Patchy
    Dense Fog

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm.  Areas of dense fog before 1pm.  Otherwise, cloudy, with a high near 60. Calm wind becoming west northwest around 6 mph in the afternoon.  Chance of precipitation is 60%.

    High: 60 °F

    Rain Likely
    and Areas
    Dense Fog

  • Tuesday Night

    Tuesday Night: Rain.  Low around 55. Southwest wind 3 to 5 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Rain

  • Wednesday

    Wednesday: Rain likely, mainly before 10am.  Cloudy, then gradually becoming mostly sunny, with a high near 62. West northwest wind around 6 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Rain Likely
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain, mainly between 10pm and 4am.  Mostly cloudy, with a low around 50. Light northwest wind.

    Low: 50 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain, mainly after 10am.  Patchy fog before 10am.  Otherwise, mostly cloudy, with a high near 60.

    High: 60 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: A 50 percent chance of rain.  Patchy fog before 9pm, then patchy fog after midnight.  Otherwise, cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: Rain.  Cloudy, with a high near 59.

    High: 59 °F

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 4am.  Cloudy, with a low around 52.

    Low: 52 °F

    Rain

Detailed Forecast

Tonight
Patchy dense fog after 1am. Otherwise, increasing clouds, with a low around 49. West northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Rain likely, mainly after 4pm. Areas of dense fog before 1pm. Otherwise, cloudy, with a high near 60. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
Rain. Low around 55. Southwest wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 62. West northwest wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of rain, mainly between 10pm and 4am. Mostly cloudy, with a low around 50. Light northwest wind.
Thursday
A 40 percent chance of rain, mainly after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 60.
Thursday Night
A 50 percent chance of rain. Patchy fog before 9pm, then patchy fog after midnight. Otherwise, cloudy, with a low around 52.
Friday
Rain. Cloudy, with a high near 59.
Friday Night
Rain, mainly before 4am. Cloudy, with a low around 52.
Saturday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 59.
Saturday Night
Rain likely. Mostly cloudy, with a low around 49.
Sunday
Rain likely. Cloudy, with a high near 56.
Sunday Night
Rain likely. Cloudy, with a low around 50.
Monday
Rain likely. Cloudy, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
San Anselmo CA
 38°N 122.56°W (Elev. 236 ft)
12:27 pm PST Dec 15, 2025
3pm PST Dec 15, 2025-6pm PST Dec 22, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database