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.

Mist

45°F

7°C

Humidity 93%
Wind Speed SE 5 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill42°F (6°C)
Last update 10 Dec 04:15 AM PST
Extended Forecast for

8 Miles WSW Petaluma CA

  • Today

    Today: Patchy fog before 10am.  Otherwise, sunny, with a high near 52. Light east wind.

    High: 52 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Patchy dense fog before 7am.  Otherwise, sunny, with a high near 56. Light east wind.

    High: 56 °F

    Patchy Dense
    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog before 2am, then patchy fog after 3am.  Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am.  Otherwise, sunny, with a high near 59. East wind 3 to 5 mph.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, sunny, with a high near 52. Light east wind.
Tonight
Patchy dense fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Thursday
Patchy dense fog before 7am. Otherwise, sunny, with a high near 56. Light east wind.
Thursday Night
Patchy fog before 2am, then patchy fog after 3am. Otherwise, mostly clear, with a low around 43. Calm wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 59. East wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 62.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Sunday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 60.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Monday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 61.
Monday Night
Rain likely. Mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WSW Petaluma CA
 38.22°N 122.76°W (Elev. 397 ft)
12:26 am PST Dec 10, 2025
4am 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