Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Mostly Cloudy

57°F

14°C

Humidity 67%
Wind Speed NNW 3 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 13 Apr 11:05 AM PDT
Extended Forecast for

Mount Hamilton CA

  • Today

    Today: Mostly sunny, with a high near 50. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. West wind 6 to 9 mph.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 55. West wind 5 to 8 mph.

    High: 55 °F

    Becoming
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. West wind 6 to 9 mph.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. West wind 6 to 8 mph.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 41.

    Low: 41 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 50. West northwest wind 7 to 9 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around 40. West wind 6 to 9 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 55. West wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 40. West wind 6 to 9 mph.
Wednesday
Mostly sunny, with a high near 56. West wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 56.
Thursday Night
Clear, with a low around 41.
Friday
Sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
A slight chance of showers. Mostly sunny, with a high near 57.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
8:52 am PDT Apr 13, 2026
11am PDT Apr 13, 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