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

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

44°F

7°C

Humidity 95%
Wind Speed E 6 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 43°F (6°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 21 Jan 05:54 AM PST
Extended Forecast for

Napa Co. Airport CA

  • Today

    Today: Widespread dense fog, mainly between 8am and 9am.  Otherwise, cloudy, with a high near 56. Calm wind becoming east southeast around 6 mph in the morning.

    High: 56 °F

    Dense Fog
    then Cloudy

  • Tonight

    Tonight: Patchy fog before 9pm, then patchy fog after 5am.  Otherwise, cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 59. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am.  Otherwise, increasing clouds, with a low around 43. West southwest wind around 6 mph becoming calm  after midnight.

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 58. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

Detailed Forecast

Today
Widespread dense fog, mainly between 8am and 9am. Otherwise, cloudy, with a high near 56. Calm wind becoming east southeast around 6 mph in the morning.
Tonight
Patchy fog before 9pm, then patchy fog after 5am. Otherwise, cloudy, with a low around 44. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 59. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Patchy fog after 4am. Otherwise, increasing clouds, with a low around 43. West southwest wind around 6 mph becoming calm after midnight.
Friday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 58. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 57.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
2:13 am PST Jan 21, 2026
6am PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

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