National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

53°F

12°C

Humidity 73%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 11 Dec 02:53 PM PST
Extended Forecast for

Santa Rosa CA

  • Tonight

    Tonight: Areas of dense fog after 8pm. Otherwise, partly cloudy, with a low around 40. Light and variable wind.

    Low: 40 °F

    Areas Dense
    Fog

  • Friday

    Friday: Patchy dense fog before 11am. Otherwise, sunny, with a high near 60. Calm wind becoming south around 5 mph in the afternoon.

    High: 60 °F

    Patchy Dense
    Fog then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62. Light south wind.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog. Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Fog

  • Sunday

    Sunday: Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 64.

    High: 64 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Monday

    Monday: A slight chance of rain after 4pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 64.

    High: 64 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A chance of rain, mainly after 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Tonight
Areas of dense fog after 8pm. Otherwise, partly cloudy, with a low around 40. Light and variable wind.
Friday
Patchy dense fog before 11am. Otherwise, sunny, with a high near 60. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 40. Calm wind.
Saturday
Sunny, with a high near 62. Light south wind.
Saturday Night
Patchy fog. Otherwise, mostly clear, with a low around 41. Calm wind.
Sunday
Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 64.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Monday
A slight chance of rain after 4pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 64.
Monday Night
A chance of rain, mainly after 10pm. Patchy fog. Otherwise, mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Areas of fog before 10am. Otherwise, cloudy, with a high near 61.
Tuesday Night
Rain likely. Patchy fog. Otherwise, cloudy, with a low around 49.
Wednesday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 59.
Wednesday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Thursday
A chance of rain. Patchy fog. Otherwise, cloudy, with a high near 57.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa CA
 38.45°N 122.73°W (Elev. 131 ft)
Last Update:
12:26 pm PST Dec 11, 2025
Forecast Valid:
3pm PST Dec 11, 2025-6pm PST Dec 18, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation