Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Mostly Cloudy

59°F

15°C

Humidity 54%
Wind Speed SW 8 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 12 Apr 07:47 PM PDT
Extended Forecast for

4 Miles SW Mount Hamilton CA

  • Tonight

    Tonight: A 20 percent chance of rain after 3am.  Patchy fog after midnight.  Otherwise, mostly cloudy, with a low around 39. Calm wind.

    Low: 39 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 60. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. West northwest wind 3 to 8 mph.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

Detailed Forecast

Tonight
A 20 percent chance of rain after 3am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 39. Calm wind.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 60. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 41. Northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 62. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 40. West northwest wind 3 to 8 mph.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 63.
Thursday Night
Clear, with a low around 40.
Friday
Sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Mount Hamilton CA
 37.3°N 121.69°W (Elev. 1401 ft)
6:36 pm PDT Apr 12, 2026
11pm PDT Apr 12, 2026-6pm PDT Apr 19, 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