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

San Jose / Reid / Hillv (KRHV)

Lat: 37.33333°NLon: 121.81667°WElev: 135.0ft.

Partly Cloudy

73°F

23°C

Humidity 53%
Wind Speed WNW 10 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 08 Apr 06:47 PM PDT
Extended Forecast for

4 Miles SW Mount Hamilton CA

  • Tonight

    Tonight: Patchy dense fog between 1am and 2am.  Otherwise, partly cloudy, with a low around 48. Northwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 48 °F

    Mostly Clear
    then Patchy
    Dense Fog

  • Thursday

    Thursday: A slight chance of showers between 2pm and 3pm.  Mostly sunny, with a high near 71. Calm wind becoming southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 20%.

    High: 71 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly after 11pm.  Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 48. West southwest wind 5 to 7 mph becoming calm  in the evening.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after 11am.  High near 62. Calm wind becoming south southwest 5 to 8 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Showers

  • Friday Night

    Friday Night: Showers likely.  Mostly cloudy, with a low around 47. South wind 3 to 8 mph.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 11am.  High near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers

  • Saturday Night

    Saturday Night: Rain likely.  Mostly cloudy, with a low around 41. Chance of precipitation is 70%.

    Low: 41 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely, mainly after 11am.  Mostly cloudy, with a high near 54.

    High: 54 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain, mainly before 11pm.  Partly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Patchy dense fog between 1am and 2am. Otherwise, partly cloudy, with a low around 48. Northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
A slight chance of showers between 2pm and 3pm. Mostly sunny, with a high near 71. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A 40 percent chance of showers, mainly after 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 48. West southwest wind 5 to 7 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers, then showers and possibly a thunderstorm after 11am. High near 62. Calm wind becoming south southwest 5 to 8 mph in the afternoon. 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 likely. Mostly cloudy, with a low around 47. South wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Showers likely, then showers and possibly a thunderstorm after 11am. High near 56. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Rain likely. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Sunday
Rain likely, mainly after 11am. Mostly cloudy, with a high near 54.
Sunday Night
A chance of rain, mainly before 11pm. Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Mount Hamilton CA
 37.3°N 121.69°W (Elev. 1401 ft)
4:51 pm PDT Apr 8, 2026
7pm PDT Apr 8, 2026-6pm PDT Apr 15, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database