National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

45°F

7°C

Humidity 100%
Wind Speed E 12 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Wind Chill39°F (4°C)
Last update 10 Dec 05:20 PM PST
Extended Forecast for

Napa CA

  • Tonight

    Tonight: Widespread dense fog, mainly after 2am. Otherwise, partly cloudy, with a low around 40. Light and variable wind.

    Low: 40 °F

    Mostly Clear
    then Dense
    Fog

  • Thursday

    Thursday: Widespread dense fog, mainly before 9am. Otherwise, sunny, with a high near 56. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 56 °F

    Dense Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog between 10pm and 3am. Otherwise, mostly clear, with a low around 41. Light east wind.

    Low: 41 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog between 7am and 10am. Otherwise, sunny, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. East wind around 5 mph.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 40.

    Low: 40 °F

    Fog

  • Sunday

    Sunday: Widespread fog, mainly before 10am. Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Fog then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Widespread fog, mainly after 4am. Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Fog

Detailed Forecast

Tonight
Widespread dense fog, mainly after 2am. Otherwise, partly cloudy, with a low around 40. Light and variable wind.
Thursday
Widespread dense fog, mainly before 9am. Otherwise, sunny, with a high near 56. Calm wind becoming south southwest around 5 mph in the afternoon.
Thursday Night
Patchy fog between 10pm and 3am. Otherwise, mostly clear, with a low around 41. Light east wind.
Friday
Patchy fog between 7am and 10am. Otherwise, sunny, with a high near 58. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 40. East wind around 5 mph.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 60.
Saturday Night
Widespread fog, mainly after 5am. Otherwise, partly cloudy, with a low around 40.
Sunday
Widespread fog, mainly before 10am. Otherwise, mostly sunny, with a high near 59.
Sunday Night
Widespread fog, mainly after 4am. Otherwise, mostly cloudy, with a low around 42.
Monday
A slight chance of showers after 10am. Widespread fog, mainly before 10am. Otherwise, mostly cloudy, with a high near 58.
Monday Night
A chance of showers. Widespread fog. Otherwise, mostly cloudy, with a low around 48.
Tuesday
A chance of showers. Widespread fog. Otherwise, mostly cloudy, with a high near 60.
Tuesday Night
A chance of showers. Widespread fog. Otherwise, mostly cloudy, with a low around 49.
Wednesday
A slight chance of showers. Widespread fog. Otherwise, partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
12:37 pm PST Dec 10, 2025
Forecast Valid:
5pm PST Dec 10, 2025-6pm PST Dec 17, 2025
 
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Additional Resources

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Chance of Precipitation