Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

Novato / Gnoss Field (KDVO)

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

Overcast

46°F

8°C

Humidity 87%
Wind Speed N 4 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 43°F (6°C)
Visibility 9.00 mi
Wind Chill44°F (7°C)
Last update 09 Dec 11:35 AM PST
Extended Forecast for

Petaluma CA

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 49. Calm wind.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, partly cloudy, with a steady temperature around 44. Calm wind.

    Low: 44 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before noon.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog before midnight, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 49. Calm wind.
Tonight
Patchy dense fog. Otherwise, partly cloudy, with a steady temperature around 44. Calm wind.
Wednesday
Areas of dense fog before noon. Otherwise, partly sunny, then gradually becoming sunny, with a high near 63. Calm wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 43. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 65. Calm wind.
Thursday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 43.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 64.
Friday Night
Patchy fog before midnight, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 42.
Saturday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62.
Saturday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 42.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 62.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 45.
Monday
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Petaluma CA
 38.23°N 122.65°W (Elev. 98 ft)
9:23 am PST Dec 9, 2025
12pm PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database