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

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

75°F

24°C

Humidity 50%
Wind Speed NNW 10 MPH
Barometer 29.9 in (1012.53 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 09 Apr 03:47 PM PDT
Extended Forecast for

10 Miles NNW Mount Hamilton CA

  • This Afternoon

    This Afternoon: A 10 percent chance of showers after 5pm.  Mostly sunny, with a high near 62. Southwest wind around 9 mph.

    High: 62 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 4am.  Mostly cloudy, with a low around 49. Southwest wind 7 to 9 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm.  High near 52. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 52 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm.  Low around 48. South southwest wind 10 to 13 mph, with gusts as high as 22 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: Showers, with thunderstorms also possible after 2pm.  High near 50. South wind 13 to 21 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 50 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm.  Low around 42. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am.  High near 46. Chance of precipitation is 90%.

    High: 46 °F

    Showers

  • Sunday Night

    Sunday Night: Rain likely, mainly before 11pm.  Mostly cloudy, with a low around 42.

    Low: 42 °F

    Rain Likely

  • Monday

    Monday: A slight chance of rain.  Mostly sunny, with a high near 52.

    High: 52 °F

    Slight Chance
    Rain

Detailed Forecast

This Afternoon
A 10 percent chance of showers after 5pm. Mostly sunny, with a high near 62. Southwest wind around 9 mph.
Tonight
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 49. Southwest wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 52. South southwest wind 8 to 13 mph, with gusts as high as 22 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 48. South southwest wind 10 to 13 mph, with gusts as high as 22 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 2pm. High near 50. South wind 13 to 21 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 42. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 46. Chance of precipitation is 90%.
Sunday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 42.
Monday
A slight chance of rain. Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 57.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Mount Hamilton CA
 37.48°N 121.68°W (Elev. 3599 ft)
1:26 pm PDT Apr 9, 2026
4pm PDT Apr 9, 2026-6pm PDT Apr 16, 2026
 
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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