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

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Mist

41°F

5°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 39°F (4°C)
Visibility 3.00 mi
Last update 08 Dec 06:35 PM PST
Extended Forecast for

2 Miles SE Guerneville CA

  • Tonight

    Tonight: Areas of dense fog.  Otherwise, increasing clouds, with a low around 44. Calm wind.

    Low: 44 °F

    Areas Dense
    Fog

  • Tuesday

    Tuesday: Areas of fog before noon.  Otherwise, mostly sunny, with a high near 64. Calm wind.

    High: 64 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of dense fog before 10am.  Otherwise, sunny, with a high near 67. Calm wind.

    High: 67 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog before midnight, then patchy fog after 4am.  Otherwise, mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, sunny, with a high near 67.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of dense fog. Otherwise, increasing clouds, with a low around 44. Calm wind.
Tuesday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 64. Calm wind.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 46. Calm wind.
Wednesday
Areas of dense fog before 10am. Otherwise, sunny, with a high near 67. Calm wind.
Wednesday Night
Patchy fog before midnight, then patchy fog after 4am. Otherwise, mostly clear, with a low around 47. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 61.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 49.
Monday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Guerneville CA
 38.5°N 122.98°W (Elev. 397 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

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database