Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity 100%
Wind Speed SSW 8 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 09 Apr 12:54 AM PDT
Extended Forecast for

Napa Co. Airport CA

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 54. West southwest wind 3 to 6 mph.

    Low: 54 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain before 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm.  Mostly cloudy, then gradually becoming sunny, with a high near 68. Light west southwest wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 20%.

    High: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of rain, mainly between 1am and 2am, then a chance of showers and thunderstorms after 2am.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 51. West southwest wind 6 to 11 mph becoming light  after midnight.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Slight Chance
    Rain then
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm.  Patchy fog before 8am. High near 64. Light south southwest wind increasing to 9 to 14 mph in the afternoon.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm.  Mostly cloudy, with a low around 50. South southwest wind 7 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after 11am.  High near 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then rain likely after 2am.  Low around 44. Chance of precipitation is 90%.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am.  Mostly cloudy, with a high near 58.

    High: 58 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of rain before 11pm.  Partly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain
    then Partly
    Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 54. West southwest wind 3 to 6 mph.
Thursday
A slight chance of rain before 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 68. Light west southwest wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Thursday Night
A chance of rain, mainly between 1am and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 51. West southwest wind 6 to 11 mph becoming light after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. Patchy fog before 8am. High near 64. Light south southwest wind increasing to 9 to 14 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 11pm, then rain likely after 11pm. Mostly cloudy, with a low around 50. South southwest wind 7 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain likely, then showers and possibly a thunderstorm after 11am. High near 59. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm, mainly before 2am, then rain likely after 2am. Low around 44. Chance of precipitation is 90%.
Sunday
Rain likely before 11am, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 58.
Sunday Night
A chance of rain before 11pm. Partly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
12:46 am PDT Apr 9, 2026
1am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
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Additional Resources

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