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

2 Miles SE Mount Hamilton CA

  • Overnight

    Overnight: Mostly clear, with a low around 50. West wind 3 to 6 mph.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 60. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of rain and thunderstorms before 1am, then a slight chance of rain between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 48. Southwest wind 5 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 52. South southwest wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. 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 before 11pm, then rain likely after 11pm. Low around 47. South southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers

  • Saturday

    Saturday: Rain, mainly before 2pm, then showers and possibly a thunderstorm after 2pm. High near 50. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °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 41. Chance of precipitation is 90%.

    Low: 41 °F

    Showers

  • Sunday

    Sunday: Rain before 11am, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 46.

    High: 46 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain before 11pm. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 50. West wind 3 to 6 mph.
Thursday
A slight chance of rain before 3pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 60. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain and thunderstorms before 1am, then a slight chance of rain between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 48. Southwest wind 5 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 52. South southwest wind 5 to 9 mph, with gusts as high as 20 mph. 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 47. South southwest wind 7 to 11 mph, with gusts as high as 20 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 50. 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 41. Chance of precipitation is 90%.
Sunday
Rain before 11am, then showers and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 46.
Sunday Night
A chance of rain before 11pm. Mostly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Mount Hamilton CA
 37.33°N 121.61°W (Elev. 3786 ft)
Last Update:
11:26 pm PDT Apr 8, 2026
Forecast Valid:
12am 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