Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. 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 N 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 43°F (6°C)
Visibility 0.25 mi
Last update 07 Dec 09:53 PM PST
Extended Forecast for

Angwin CA

  • Tonight

    Tonight: Patchy fog between 1am and 2am.  Otherwise, mostly clear, with a low around 43. Light north wind.

    Low: 43 °F

    Patchy Fog

  • Monday

    Monday: Patchy dense fog before 9am.  Otherwise, sunny, with a high near 58. Calm wind.

    High: 58 °F

    Patchy Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 44. Light north wind.

    Low: 44 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am.  Otherwise, sunny, with a high near 62. Calm wind.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. Light north wind.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Wednesday Night

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

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Thursday Night

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

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog between 1am and 2am. Otherwise, mostly clear, with a low around 43. Light north wind.
Monday
Patchy dense fog before 9am. Otherwise, sunny, with a high near 58. Calm wind.
Monday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 44. Light north wind.
Tuesday
Patchy fog before 10am. Otherwise, sunny, with a high near 62. Calm wind.
Tuesday Night
Mostly clear, with a low around 46. Light north wind.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 66.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Angwin CA
 38.59°N 122.42°W (Elev. 1450 ft)
8:31 pm PST Dec 7, 2025
10pm PST Dec 7, 2025-6pm PST Dec 14, 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