Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

45°F

7°C

Humidity 93%
Wind Speed E 8 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill41°F (5°C)
Last update 08 Dec 11:00 PM PST
Extended Forecast for

Napa Co. Airport CA

  • Tonight

    Tonight: Widespread fog, mainly between 4am and 5am.  Otherwise, mostly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Fog

  • Tuesday

    Tuesday: Widespread fog, mainly before 9am.  Otherwise, mostly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Widespread fog, mainly after 11pm.  Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Fog

  • Wednesday

    Wednesday: Widespread fog, mainly before 10am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 62. Light east wind.

    High: 62 °F

    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Widespread fog, mainly after 1am.  Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Fog

  • Thursday

    Thursday: Widespread fog, mainly before 7am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Fog then
    Sunny

  • Thursday Night

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

    Low: 42 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog.  Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Patchy Fog

Detailed Forecast

Tonight
Widespread fog, mainly between 4am and 5am. Otherwise, mostly cloudy, with a low around 41. Calm wind.
Tuesday
Widespread fog, mainly before 9am. Otherwise, mostly sunny, with a high near 55. Calm wind.
Tuesday Night
Widespread fog, mainly after 11pm. Otherwise, partly cloudy, with a low around 42. Calm wind.
Wednesday
Widespread fog, mainly before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 62. Light east wind.
Wednesday Night
Widespread fog, mainly after 1am. Otherwise, mostly clear, with a low around 43. Calm wind.
Thursday
Widespread fog, mainly before 7am. Otherwise, mostly sunny, with a high near 62.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 42.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 42.
Saturday
Widespread fog, mainly before 7am. Otherwise, mostly sunny, with a high near 62.
Saturday Night
Widespread fog. Otherwise, partly cloudy, with a low around 44.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 60.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Monday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.22°N 122.3°W (Elev. 3 ft)
12:26 pm PST Dec 8, 2025
11pm PST Dec 8, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

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