National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather this Weekend in the Plains; Pacific Storm in the West

A storm system near the Hawaiian Islands is expected to bring periods of heavy rainfall, strong winds, and isolated strong to severe thunderstorms through Friday. Several rounds of severe thunderstorms are forecast to impact parts of the Great Plains into the Midwest this weekend into next week. Moderate to heavy rainfall and high elevation snow is expected this weekend over California and Oregon. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

72°F

22°C

Humidity 53%
Wind Speed WNW 11 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 09 Apr 05:47 PM PDT
Extended Forecast for

2 Miles WSW Mount Hamilton CA

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 47. South southwest wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. High near 57. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 46. South southwest wind 6 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: 46 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm. High near 54. South wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 54 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 41. South southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 50. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 50 °F

    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance Rain

  • Monday

    Monday: A slight chance of rain. Mostly sunny, with a high near 57.

    High: 57 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 47. South southwest wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. High near 57. South wind 5 to 9 mph, with gusts as high as 20 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 46. South southwest wind 6 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
Showers, with thunderstorms also possible after 2pm. High near 54. South wind 7 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm. Low around 41. South southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 50. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Monday
A slight chance of rain. Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 61.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Mount Hamilton CA
 37.32°N 121.66°W (Elev. 2201 ft)
Last Update:
4:46 pm PDT Apr 9, 2026
Forecast Valid:
6pm PDT Apr 9, 2026-6pm PDT Apr 16, 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