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

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

66°F

19°C

Humidity 72%
Wind Speed NW 6 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 25 Aug 09:55 PM PDT
Extended Forecast for

Mount Hamilton CA

  • Today

    Today: Sunny, with a high near 87. Light and variable wind becoming west 5 to 9 mph in the morning.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. West wind around 6 mph becoming north after midnight.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 85. North northwest wind 5 to 7 mph becoming west in the morning.

    High: 85 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 71. West northwest wind 5 to 8 mph.

    Low: 71 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain before 11am. Partly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 78 °F

    Slight Chance
    Rain then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 57.

    Low: 57 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 87. Light and variable wind becoming west 5 to 9 mph in the morning.
Tonight
Mostly clear, with a low around 71. West wind around 6 mph becoming north after midnight.
Thursday
Increasing clouds, with a high near 85. North northwest wind 5 to 7 mph becoming west in the morning.
Thursday Night
Mostly cloudy, with a low around 71. West northwest wind 5 to 8 mph.
Friday
A 20 percent chance of rain before 11am. Partly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 76.
Saturday Night
Clear, with a low around 57.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 55.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
Last Update:
2:52 am PDT Aug 26, 2026
Forecast Valid:
5am PDT Aug 26, 2026-6pm PDT Sep 1, 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