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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather this Weekend in the Plains; Pacific Storm in the West

A storm system near the Hawaiian Islands is expected to bring periods of heavy rainfall, strong winds, and isolated strong to severe thunderstorms through Friday. Several rounds of severe thunderstorms are forecast to impact parts of the Great Plains into the Midwest this weekend into next week. Moderate to heavy rainfall and high elevation snow is expected this weekend over California and Oregon. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

64°F

18°C

Humidity 77%
Wind Speed SSW 12 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 09 Apr 06:30 PM PDT
Extended Forecast for

Napa Co. Airport CA

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 2am. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 50. West southwest wind 8 to 13 mph becoming light southwest after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Partly Cloudy
    then Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 65. Light south southwest wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 50. South wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm. High near 60. South wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 11pm, then showers and possibly a thunderstorm after 11pm. Low around 45. South southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 57. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 2am. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 50. West southwest wind 8 to 13 mph becoming light southwest after midnight. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 65. Light south southwest wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 50. South wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 60. South wind 8 to 13 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then showers between 8pm and 11pm, then showers and possibly a thunderstorm after 11pm. Low around 45. South southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 57. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
Last Update:
4:46 pm PDT Apr 9, 2026
Forecast Valid:
6pm PDT Apr 9, 2026-6pm PDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation