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

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 this 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.

Mostly Cloudy

70°F

21°C

Humidity 64%
Wind Speed SSW 9 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 09 Apr 01:35 PM PDT
Extended Forecast for

4 Miles N Sonoma CA

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 62. West southwest wind around 9 mph. Chance of precipitation is 20%.

    High: 62 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 52. West southwest wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 55. South southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 51. South wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 11am. High near 53. South wind 10 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 53 °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 48. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 51. Chance of precipitation is 80%.

    High: 51 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Partly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain
    then Partly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 62. West southwest wind around 9 mph. Chance of precipitation is 20%.
Tonight
A 40 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 52. West southwest wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms before 1pm, then showers and possibly a thunderstorm, mainly after 1pm. High near 55. South southwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm. Low around 51. South wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers, with thunderstorms also possible after 11am. High near 53. South wind 10 to 18 mph, with gusts as high as 33 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 48. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 51. Chance of precipitation is 80%.
Sunday Night
A chance of rain before 11pm. Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Sonoma CA
 38.36°N 122.45°W (Elev. 1818 ft)
Last Update:
1:26 pm PDT Apr 9, 2026
Forecast Valid:
1pm PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation