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

Novato / Gnoss Field (KDVO)

Lat: 38.14178°NLon: 122.55463°WElev: 3.0ft.

Overcast

45°F

7°C

Humidity 93%
Wind Speed SE 3 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Last update 09 Dec 11:35 PM PST
Extended Forecast for

2 Miles NE Petaluma CA

  • Tonight

    Tonight: Areas of dense fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before noon.  Otherwise, sunny, with a high near 62. Calm wind.

    High: 62 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Fog

  • Friday

    Friday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Areas of fog before 4am, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 39.

    Low: 39 °F

    Areas Fog

  • Saturday

    Saturday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Areas of fog.  Otherwise, partly cloudy, with a low around 40.

    Low: 40 °F

    Areas Fog

Detailed Forecast

Tonight
Areas of dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Wednesday
Areas of dense fog before noon. Otherwise, sunny, with a high near 62. Calm wind.
Wednesday Night
Areas of fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 63. Calm wind.
Thursday Night
Areas of fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 61.
Friday Night
Areas of fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 39.
Saturday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 59.
Saturday Night
Areas of fog. Otherwise, partly cloudy, with a low around 40.
Sunday
Areas of fog before noon. Otherwise, partly sunny, with a high near 58.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Monday
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 59.
Monday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 47.
Tuesday
A chance of rain. Areas of fog. Otherwise, partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Petaluma CA
 38.26°N 122.6°W (Elev. 108 ft)
12:26 pm PST Dec 9, 2025
11pm PST Dec 9, 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