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.

Fog

43°F

6°C

Humidity 100%
Wind Speed SE 4 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 43°F (6°C)
Visibility 0.50 mi
Wind Chill41°F (5°C)
Last update 09 Dec 03:55 AM PST
Extended Forecast for

2 Miles SE Guerneville CA

  • Today

    Today: Areas of dense fog before noon.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 64. Calm wind.

    High: 64 °F

    Areas Dense
    Fog then
    Sunny

  • Tonight

    Tonight: Patchy dense fog between 3am and 5am.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Patchy dense fog between 7am and 10am.  Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Patchy Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 68. Calm wind.

    High: 68 °F

    Sunny

  • Thursday Night

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

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Today
Areas of dense fog before noon. Otherwise, partly sunny, then gradually becoming sunny, with a high near 64. Calm wind.
Tonight
Patchy dense fog between 3am and 5am. Otherwise, mostly clear, with a low around 45. Calm wind.
Wednesday
Patchy dense fog between 7am and 10am. Otherwise, sunny, with a high near 66. Calm wind.
Wednesday Night
Mostly clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 68. Calm wind.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 45.
Saturday
Sunny, with a high near 63.
Saturday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45.
Sunday
Patchy fog. Otherwise, partly sunny, with a high near 62.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 47.
Monday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Guerneville CA
 38.5°N 122.98°W (Elev. 397 ft)
2:42 am PST Dec 9, 2025
4am 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