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.

Clear

48°F

9°C

Humidity 93%
Wind Speed E 11 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 46°F (8°C)
Visibility 8.00 mi
Wind Chill43°F (6°C)
Last update 21 Jan 01:35 PM PST
Extended Forecast for

Napa Co. Airport CA

  • This Afternoon

    This Afternoon: Cloudy, with a high near 56. East wind around 6 mph.

    High: 56 °F

    Cloudy

  • Tonight

    Tonight: Patchy fog before 9pm, then patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 59 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am.  Otherwise, increasing clouds, with a low around 42. West southwest wind around 6 mph becoming calm  after midnight.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 57. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 57 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Cloudy, with a high near 56. East wind around 6 mph.
Tonight
Patchy fog before 9pm, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 43. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Patchy fog after 4am. Otherwise, increasing clouds, with a low around 42. West southwest wind around 6 mph becoming calm after midnight.
Friday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 57. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Partly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
1:27 pm PST Jan 21, 2026
1pm PST Jan 21, 2026-6pm PST Jan 27, 2026
 
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Additional Resources

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