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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

54°F

12°C

Humidity 87%
Wind Speed WSW 4 MPH
Barometer 29.65 in (1004.06 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 24 Dec 08:35 AM PST
Extended Forecast for

2 Miles N Napa Co. Airport CA

Flood Watch December 24, 08:46am until December 26, 10:00pm
Wind Advisory December 24, 08:00pm until December 25, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 24, 08:46am until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Today

    High: 57 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm, mainly after 11pm. Some of the storms could be severe. Steady temperature around 53. South southeast wind 13 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 53 °F

    Severe
    Thunderstorms

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. Some of the storms could be severe. High near 53. South wind 9 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 53 °F

    Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 48. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Severe
    Thunderstorms

  • Friday

    Friday: Showers, with thunderstorms also possible after 1pm. Patchy fog after 4pm. High near 53. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 53 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers
    Likely and
    Patchy Fog

  • Saturday

    Saturday: A 20 percent chance of showers before 10am. Areas of fog before noon. Otherwise, partly sunny, with a high near 52.

    High: 52 °F

    Slight Chance
    Showers and
    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Areas
    Frost

Detailed Forecast

Today
Showers and thunderstorms, mainly before 4pm, then showers and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 57. South southwest wind 7 to 10 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 11pm, then showers and possibly a thunderstorm, mainly after 11pm. Some of the storms could be severe. Steady temperature around 53. South southeast wind 13 to 21 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
Showers and possibly a thunderstorm before 7am, then showers between 7am and 1pm, then showers and possibly a thunderstorm after 1pm. Some of the storms could be severe. High near 53. South wind 9 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm. Some of the storms could be severe. Low around 48. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers, with thunderstorms also possible after 1pm. Patchy fog after 4pm. High near 53. South wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 42. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 20 percent chance of showers before 10am. Areas of fog before noon. Otherwise, partly sunny, with a high near 52.
Saturday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 36.
Sunday
Areas of frost before 7am. Otherwise, mostly sunny, with a high near 52.
Sunday Night
Patchy fog before 4am, then patchy fog after 5am. Patchy frost after 3am. Otherwise, mostly clear, with a low around 36.
Monday
Patchy fog. Patchy frost. Otherwise, sunny, with a high near 53.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 37.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Napa Co. Airport CA
 38.25°N 122.27°W (Elev. 59 ft)
Last Update:
8:40 am PST Dec 24, 2025
Forecast Valid:
8am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation