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

Snow Squalls from the Upper Midwest to Great Lakes; High Winds in the Northern and Central Plains

An Arctic front will bring widespread snow squalls through Friday from the Upper Midwest to the Ohio Valley. Heavy snow rates and strong winds will lead to near-zero visibility and dangerous travel conditions. High winds will continue across the northern and central High Plains through Friday, with wind gusts above 60 mph likely, leading to hazardous travel conditions. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

39°F

4°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 39°F (4°C)
Visibility 8.00 mi
Last update 16 Jan 12:00 AM PST
Extended Forecast for

Sonoma CA

Dense Fog Advisory until January 16, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until January 16, 09:00am

    NOW until 9:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 41 °F

    Patchy Dense
    Fog

  • Friday

    Friday: Sunny, with a high near 65. East northeast wind 5 to 11 mph, with gusts as high as 21 mph.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41. North northeast wind around 5 mph becoming calm after midnight.

    Low: 41 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 64. Calm wind becoming southeast around 5 mph in the morning.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Partly Cloudy
    then Patchy
    Fog

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy dense fog before 2am. Otherwise, mostly clear, with a low around 41. East northeast wind 5 to 7 mph.
Friday
Sunny, with a high near 65. East northeast wind 5 to 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 41. North northeast wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 64. Calm wind becoming southeast around 5 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 41. Calm wind.
Sunday
Partly sunny, with a high near 64.
Sunday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 40.
M.L.King Day
Mostly sunny, with a high near 63.
Monday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 40.
Tuesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 61.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Wednesday
Areas of fog. Otherwise, partly sunny, with a high near 59.
Wednesday Night
Widespread fog. Otherwise, mostly cloudy, with a low around 42.
Thursday
Widespread fog. Otherwise, partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
11:45 pm PST Jan 15, 2026
Forecast Valid:
12am PST Jan 16, 2026-6pm PST Jan 22, 2026
 
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