Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

57°F

14°C

Humidity 62%
Wind Speed W 4 MPH
Barometer 30.18 in (1022.01 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 27 Dec 04:00 PM PST
Extended Forecast for

3 Miles ESE Guerneville CA

  • Tonight

    Tonight: Patchy fog between 4am and 5am.  Otherwise, partly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy dense fog between 7am and 9am.  Otherwise, sunny, with a high near 55. Calm wind.

    High: 55 °F

    Patchy Dense
    Fog then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39. Calm wind.

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. Calm wind.

    High: 57 °F

    Sunny

  • Monday Night

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

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 10pm.  Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Patchy Fog
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain.  Patchy fog.  Otherwise, mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 39. Calm wind.
Sunday
Patchy dense fog between 7am and 9am. Otherwise, sunny, with a high near 55. Calm wind.
Sunday Night
Mostly clear, with a low around 39. Calm wind.
Monday
Sunny, with a high near 57. Calm wind.
Monday Night
Mostly clear, with a low around 40. Calm wind.
Tuesday
Sunny, with a high near 59.
Tuesday Night
Patchy fog before 10pm. Otherwise, mostly clear, with a low around 40.
Wednesday
Mostly cloudy, with a high near 58.
Wednesday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 44.
New Year's Day
Rain likely, mainly after 10am. Areas of fog before 1pm. Otherwise, cloudy, with a high near 55.
Thursday Night
Rain likely. Patchy fog. Otherwise, cloudy, with a low around 46.
Friday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 54.
Friday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Saturday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Guerneville CA
 38.5°N 122.95°W (Elev. 79 ft)
12:27 pm PST Dec 27, 2025
4pm PST Dec 27, 2025-6pm PST Jan 3, 2026
 
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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