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.

Overcast

55°F

13°C

Humidity 93%
Wind Speed E 3 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 10 Apr 02:35 AM PDT
Extended Forecast for

2 Miles SSW Lake Berryessa CA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms, mainly after 3am.  Mostly cloudy, with a low around 52. Light southwest wind.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am.  High near 59. Light south southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 59 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then rain likely, mainly between 8pm and 11pm.  Mostly cloudy, with a low around 52. South southwest wind 7 to 9 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely then
    Chance Rain

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after 11am.  High near 54. South wind 9 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.

    High: 54 °F

    Showers

  • Saturday Night

    Saturday Night: Rain and possibly a thunderstorm before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then rain after 2am.  Low around 48. South southeast wind 9 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Rain before 11am, then showers and possibly a thunderstorm after 11am.  High near 52. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of rain before 11pm.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Mostly cloudy, with a low around 52. Light southwest wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 11am. High near 59. Light south southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 18 mph. 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 8pm, then rain likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 52. South southwest wind 7 to 9 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 54. South wind 9 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.
Saturday Night
Rain and possibly a thunderstorm before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 48. South southeast wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Rain before 11am, then showers and possibly a thunderstorm after 11am. High near 52. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 40 percent chance of rain before 11pm. Mostly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lake Berryessa CA
 38.54°N 122.26°W (Elev. 1824 ft)
1:26 am PDT Apr 10, 2026
2am PDT Apr 10, 2026-6pm PDT Apr 16, 2026
 
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Additional Resources

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