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

43°F

6°C

Humidity 100%
Wind Speed ENE 3 MPH
Barometer 30.31 in (1026.41 mb)
Dewpoint 43°F (6°C)
Visibility 8.00 mi
Last update 09 Dec 12:20 AM PST
Extended Forecast for

2 Miles NW Napa Co. Airport CA

  • Overnight

    Overnight: Areas of fog.  Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Fog

  • Tuesday

    Tuesday: Areas of fog before 11am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 57. Light and variable wind.

    High: 57 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy dense fog.  Otherwise, partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before noon.  Otherwise, mostly sunny, with a high near 59. Light east wind.

    High: 59 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm.  Otherwise, partly cloudy, with a low around 41.

    Low: 41 °F

    Patchy Fog

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Tuesday
Areas of fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 57. Light and variable wind.
Tuesday Night
Patchy dense fog. Otherwise, partly cloudy, with a low around 41. Calm wind.
Wednesday
Areas of dense fog before noon. Otherwise, mostly sunny, with a high near 59. Light east wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Thursday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 63.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 42.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 60.
Friday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 41.
Saturday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 59.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 42.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 59.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Monday
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Napa Co. Airport CA
 38.22°N 122.3°W (Elev. 3 ft)
12:26 am PST Dec 9, 2025
12am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database