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

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

63°F

17°C

Humidity 77%
Wind Speed WNW 8 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 08 Apr 09:55 PM PDT
Extended Forecast for

5 Miles SSW Mount Hamilton CA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 50. Calm wind.

    Low: 50 °F

    Patchy Fog

  • Thursday

    Thursday: A slight chance of rain between 2pm and 3pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 72. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 72 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain, then a chance of showers and thunderstorms after 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 50. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter 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. Patchy fog before 8am. High near 63. 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: 63 °F

    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 11pm, then rain likely after 11pm. Low around 48. South wind 5 to 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: 48 °F

    Showers

  • Saturday

    Saturday: Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. 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: Rain and possibly a thunderstorm before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 43. Chance of precipitation is 90%.

    Low: 43 °F

    Showers

  • Sunday

    Sunday: Rain before 11am, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 56.

    High: 56 °F

    Showers

  • Sunday Night

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

    Low: 41 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 50. Calm wind.
Thursday
A slight chance of rain between 2pm and 3pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 72. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain, then a chance of showers and thunderstorms after 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 50. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. Patchy fog before 8am. High near 63. 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 48. South wind 5 to 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
Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 59. Chance of precipitation is 90%. 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 43. Chance of precipitation is 90%.
Sunday
Rain before 11am, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 56.
Sunday Night
A chance of rain before 11pm. Mostly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 70.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mount Hamilton CA
 37.28°N 121.68°W (Elev. 1138 ft)
Last Update:
12:46 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