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 E 3 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 43°F (6°C)
Visibility 0.50 mi
Last update 09 Dec 03:00 AM PST
Extended Forecast for

4 Miles NW Santa Rosa CA

  • Overnight

    Overnight: Areas of dense fog.  Otherwise, mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Areas Dense
    Fog

  • Tuesday

    Tuesday: Areas of dense fog before noon.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 63. Calm wind.

    High: 63 °F

    Areas Dense
    Fog then
    Sunny

  • Tuesday Night

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

    Low: 43 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before 11am.  Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 11am.  Otherwise, sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Tuesday
Areas of dense fog before noon. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 63. Calm wind.
Tuesday Night
Patchy dense fog. Otherwise, mostly clear, with a low around 43. Calm wind.
Wednesday
Areas of dense fog before 11am. Otherwise, sunny, with a high near 66. Calm wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 45. Calm wind.
Thursday
Patchy fog before 11am. Otherwise, sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Sunday
Areas of 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 46.
Monday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Santa Rosa CA
 38.49°N 122.74°W (Elev. 151 ft)
2:42 am PST Dec 9, 2025
3am 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