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

Storm Impacting the Southwest U.S.

A slow moving weather disturbance will continue to bring periodic rain showers, a few isolated thunderstorms, and a localized flash flooding across the Southwest. The threat will expand into the Southern Plains Wednesday night. Moderate to heavy snow across the Sierra Nevada and southern Utah Ranges will continue into the overnight period. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

47°F

8°C

Humidity 92%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 18 Nov 08:54 PM PST
Extended Forecast for

Napa Co. Airport CA

  • Tonight

    Tonight: Areas of fog. Otherwise, increasing clouds, with a low around 47. Calm wind.

    Low: 47 °F

    Areas Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Rain, mainly after 10pm. Patchy fog after midnight. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain and
    Patchy Fog

  • Thursday

    Thursday: Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 58. Light and variable wind becoming west northwest 5 to 7 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 10pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Slight Chance
    Rain then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 44.

    Low: 44 °F

    Patchy Fog

Detailed Forecast

Tonight
Areas of fog. Otherwise, increasing clouds, with a low around 47. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming east southeast around 5 mph in the afternoon.
Wednesday Night
Rain, mainly after 10pm. Patchy fog after midnight. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 58. Light and variable wind becoming west northwest 5 to 7 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 20 percent chance of rain before 10pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42. Calm wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 43.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 63.
Saturday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 44.
Sunday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 62.
Sunday Night
Patchy fog. Otherwise, partly cloudy, with a low around 44.
Monday
Partly sunny, with a high near 62.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.22°N 122.3°W (Elev. 3 ft)
Last Update:
2:38 pm PST Nov 18, 2025
Forecast Valid:
9pm PST Nov 18, 2025-6pm PST Nov 25, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation