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. through the weekend. 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. 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 NNW 10 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 29 Jul 05:47 PM PDT
Extended Forecast for

4 Miles S Mount Hamilton CA

  • Tonight

    Tonight: Clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 89. Calm wind becoming west northwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 92. Calm wind becoming west around 6 mph in the afternoon.

    High: 92 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 57. West northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 57 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Calm wind becoming west northwest 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Clear, with a low around 54. West northwest wind 5 to 7 mph becoming calm in the evening.
Friday
Sunny, with a high near 92. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Clear, with a low around 57. West northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93.
Saturday Night
Clear, with a low around 56.
Sunday
Sunny, with a high near 92.
Sunday Night
Clear, with a low around 58.
Monday
Sunny, with a high near 93.
Monday Night
Clear, with a low around 60.
Tuesday
Sunny, with a high near 92.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 92.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Mount Hamilton CA
 37.28°N 121.65°W (Elev. 1762 ft)
Last Update:
1:25 pm PDT Jul 29, 2026
Forecast Valid:
6pm PDT Jul 29, 2026-6pm PDT Aug 5, 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