Heavy Great Lakes Snow through Friday; Watching Potential for Major Winter Storm Late Week into this Weekend

Heavy lake effect snow will continue in the Great Lakes into Wednesday before another storm brings a widespread general snow followed by another round of heavy lake effect snow. A wide-ranging winter storm will produce great swaths of heavy snow, sleet, and treacherous freezing rain from the southern Rockies/Plains and Mid-South starting Friday and shifting toward the East Coast through Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Mist

42°F

6°C

Humidity 100%
Wind Speed ENE 8 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 42°F (6°C)
Visibility 4.00 mi
Wind Chill37°F (3°C)
Last update 20 Jan 06:54 AM PST
Extended Forecast for

Sonoma CA

  • Today

    Today: Areas of dense fog before 11am.  Otherwise, partly sunny, with a high near 59. Light and variable wind.

    High: 59 °F

    Areas Dense
    Fog then
    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog between 9pm and 2am.  Otherwise, mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, cloudy, with a high near 59. Calm wind.

    High: 59 °F

    Patchy Fog
    then Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after 10pm.  Otherwise, cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, partly sunny, with a high near 61. Calm wind.

    High: 61 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Areas Fog
    then Sunny

  • Friday Night

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

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Areas of dense fog before 11am. Otherwise, partly sunny, with a high near 59. Light and variable wind.
Tonight
Patchy fog between 9pm and 2am. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, cloudy, with a high near 59. Calm wind.
Wednesday Night
Patchy fog after 10pm. Otherwise, cloudy, with a low around 44. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 61. Calm wind.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 42.
Friday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40.
Monday
Areas of fog. Otherwise, mostly cloudy, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
12:26 am PST Jan 20, 2026
7am PST Jan 20, 2026-6pm PST Jan 26, 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