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 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 SW 5 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 09 Apr 01:20 AM PDT
Extended Forecast for

3 Miles SW Napa CA

  • Overnight

    Overnight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 3pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 69. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 69 °F

    Patchy Fog
    then Chance
    Showers

  • 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 midnight. Otherwise, mostly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Slight Chance
    Rain then
    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. Areas of fog before 11am. High near 64. Calm wind becoming south southwest 5 to 9 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
    Areas Fog

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 50. Southwest wind 5 to 9 mph becoming light south in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 50 °F

    Showers

  • Saturday

    Saturday: Rain likely, then showers and possibly a thunderstorm after 11am. High near 58. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 58 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then rain likely after 2am. Low around 43. Chance of precipitation is 90%.

    Low: 43 °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 40.

    Low: 40 °F

    Chance Rain
    then Partly
    Cloudy

Detailed Forecast

Overnight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 51. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 3pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 69. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Thursday Night
A chance of rain, mainly between 1am and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm in the evening. 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. Areas of fog before 11am. High near 64. Calm wind becoming south southwest 5 to 9 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 and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 50. Southwest wind 5 to 9 mph becoming light south in the evening. Chance of precipitation is 80%. 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 58. Chance of precipitation is 100%. 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 43. 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 40.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Mostly sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Napa CA
 38.26°N 122.34°W (Elev. 157 ft)
Last Update:
1:26 am PDT Apr 9, 2026
Forecast Valid:
1am 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