Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

KF6YUA Sebastopol (AR323)

Lat: 38.3803°NLon: 122.8242°WElev: 230.0ft.

NA

44°F

7°C

Humidity 98%
Wind Speed E 0 MPH
Barometer 30.36 in (1028.11 mb)
Dewpoint 43°F (6°C)
Visibility NA
Last update 08 Dec 05:54 PM PST
Extended Forecast for

3 Miles SW Cotati CA

  • Tonight

    Tonight: Patchy dense fog before 9pm, then patchy dense fog after midnight.  Otherwise, increasing clouds, with a low around 42. Light and variable wind.

    Low: 42 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Patchy fog before noon.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 43. Light north northeast wind.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before noon.  Otherwise, mostly sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before noon.  Otherwise, sunny, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 44.

    Low: 44 °F

    Areas Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Areas Fog

Detailed Forecast

Tonight
Patchy dense fog before 9pm, then patchy dense fog after midnight. Otherwise, increasing clouds, with a low around 42. Light and variable wind.
Tuesday
Patchy fog before noon. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Light and variable wind.
Tuesday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 43. Light north northeast wind.
Wednesday
Patchy fog before noon. Otherwise, mostly sunny, with a high near 63. Light and variable wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 44. Calm wind.
Thursday
Patchy fog before noon. Otherwise, sunny, with a high near 64.
Thursday Night
Areas of fog. Otherwise, partly cloudy, with a low around 44.
Friday
Patchy fog before 10am. Otherwise, sunny, with a high near 63.
Friday Night
Areas of fog. Otherwise, partly cloudy, with a low around 42.
Saturday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 62.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Sunday
Patchy fog. Otherwise, partly sunny, with a high near 60.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Monday
A chance of rain. Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Cotati CA
 38.31°N 122.75°W (Elev. 561 ft)
12:26 pm PST Dec 8, 2025
6pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database