Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

48°F

9°C

Humidity 92%
Wind Speed ENE 6 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Wind Chill45°F (7°C)
Last update 21 Jan 08:54 PM PST
Extended Forecast for

Napa Co. Airport CA

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, mostly cloudy, with a steady temperature around 48. Calm wind.

    Low: 48 °F

    Cloudy then
    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, mostly cloudy, then gradually becoming 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. West northwest wind around 6 mph becoming north after midnight.

    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

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a steady temperature around 48. 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, mostly cloudy, then gradually becoming 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. West northwest wind around 6 mph becoming north after midnight.
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.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 41.
Wednesday
A chance of rain. Mostly cloudy, 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)
2:22 pm PST Jan 21, 2026
9pm PST Jan 21, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database