Severe Thunderstorms and Flooding from the Southern Plains to the Great Lakes; Record Heat in the East

Widely scattered severe thunderstorms may produce damaging winds, hail, and flash flooding from the southern Plains into the lower Great Lakes. Elevated to locally critical fire weather conditions will persist across portions of the Southwest and Southern High Plains due to gusty winds and dry conditions. An early-season heatwave will challenge temperature records across the eastern U.S.. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

66°F

19°C

Humidity 39%
Wind Speed N 0 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 May 08:47 AM PDT
Extended Forecast for

4 Miles S Mount Hamilton CA

  • Today

    Today: Sunny, with a high near 74. North northwest wind 5 to 8 mph, with gusts as high as 18 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 57. Northwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 20 mph.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 74. North northwest wind 5 to 8 mph, with gusts as high as 18 mph.
Tonight
Clear, with a low around 57. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Wednesday
Sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. West northwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 80. Calm wind becoming west southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 56.
Friday
Sunny, with a high near 77.
Friday Night
Mostly clear, with a low around 51.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 49.
Memorial Day
Sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Mount Hamilton CA
 37.28°N 121.63°W (Elev. 2831 ft)
8:47 am PDT May 19, 2026
9am PDT May 19, 2026-6pm PDT May 25, 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