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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. this week. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England today. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Clear

79°F

26°C

Humidity 44%
Wind Speed NW 4 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 29 Jul 11:47 AM PDT
Extended Forecast for

Mount Hamilton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 83. West southwest wind 5 to 8 mph.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 62. West wind 3 to 6 mph.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63. West wind 3 to 7 mph.

    Low: 63 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 66.

    Low: 66 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 83. West southwest wind 5 to 8 mph.
Tonight
Clear, with a low around 62. West wind 3 to 6 mph.
Thursday
Sunny, with a high near 83. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Clear, with a low around 63. West wind 3 to 7 mph.
Friday
Sunny, with a high near 87. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Friday Night
Clear, with a low around 65.
Saturday
Sunny, with a high near 87.
Saturday Night
Clear, with a low around 66.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 68.
Monday
Sunny, with a high near 88.
Monday Night
Clear, with a low around 69.
Tuesday
Sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
Last Update:
11:26 am PDT Jul 29, 2026
Forecast Valid:
12pm PDT Jul 29, 2026-6pm PDT Aug 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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