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

Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

63°F

17°C

Humidity 77%
Wind Speed E 12 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 13 Nov 02:20 AM PST
Extended Forecast for

2 Miles NNW Napa CA

Wind Advisory until November 13, 10:00am
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until November 13, 10:00am

    NOW until 10:00am Thu

    Wind Advisory

  • Overnight

    Low: 58 °F

    Heavy Rain

  • Thursday

    Thursday: Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 62. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 62 °F

    Heavy Rain
    and Breezy

  • Thursday Night

    Thursday Night: Rain likely, mainly before 10pm. Areas of fog after 4am. Otherwise, mostly cloudy, with a low around 51. South southwest wind 10 to 15 mph becoming light south southeast after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Rain Likely
    and Areas Fog

  • Friday

    Friday: A 30 percent chance of rain, mainly before 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 62. Calm wind becoming northeast around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Rain
    and Patchy
    Fog

  • Friday Night

    Friday Night: A 20 percent chance of rain before 10pm. Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Slight Chance
    Rain and
    Patchy Fog
    then Patchy
    Fog

  • Saturday

    Saturday: A 20 percent chance of rain after 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 65. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Slight Chance
    Rain and
    Areas Fog

  • Saturday Night

    Saturday Night: A 30 percent chance of rain, mainly before 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday

    Sunday: A chance of rain, mainly after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 59.

    High: 59 °F

    Chance Rain
    and Patchy
    Fog

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 58. South southeast wind around 7 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 62. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
Rain likely, mainly before 10pm. Areas of fog after 4am. Otherwise, mostly cloudy, with a low around 51. South southwest wind 10 to 15 mph becoming light south southeast after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of rain, mainly before 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 62. Calm wind becoming northeast around 5 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 20 percent chance of rain before 10pm. Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 47. Calm wind.
Saturday
A 20 percent chance of rain after 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 65. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A 30 percent chance of rain, mainly before 4am. Patchy fog. Otherwise, mostly cloudy, with a low around 50.
Sunday
A chance of rain, mainly after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 59.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 48.
Monday
A chance of rain, mainly before 4pm. Partly sunny, with a high near 58.
Monday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 60.
Tuesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Wednesday
A slight chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Napa CA
 38.31°N 122.32°W (Elev. 98 ft)
Last Update:
2:09 am PST Nov 13, 2025
Forecast Valid:
2am PST Nov 13, 2025-6pm PST Nov 19, 2025
 
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Additional Resources

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Chance of Precipitation