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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Hazardous Weather Conditions

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

37°F

3°C

Humidity 69%
Wind Speed NA 3 MPH
Barometer 30.42 in (1030.14 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 09 Jan 07:47 AM PST
Extended Forecast for

10 Miles E Mount Hamilton CA

Extreme Cold Warning January 9, 08:43am until January 9, 09:00am
Click here for hazard details and duration
...
  •  
    Extreme Cold Warning January 9, 08:43am until January 9, 09:00am

    NOW until 9:00am Fri

    Extreme Cold Warning

  • Today

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after 11pm. Otherwise, clear, with a low around 29. Calm wind.

    Low: 29 °F

    Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, sunny, with a high near 57. Light east northeast wind.

    High: 57 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Light north northeast wind.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Patchy frost after 4am. Otherwise, clear, with a low around 37.

    Low: 37 °F

    Clear then
    Patchy Frost

Detailed Forecast

Today
Sunny, with a high near 54. Calm wind becoming east southeast around 5 mph.
Tonight
Widespread frost, mainly after 11pm. Otherwise, clear, with a low around 29. Calm wind.
Saturday
Areas of frost before 9am. Otherwise, sunny, with a high near 57. Light east northeast wind.
Saturday Night
Partly cloudy, with a low around 33. Calm wind.
Sunday
Mostly sunny, with a high near 60. Light north northeast wind.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 61.
Monday Night
Patchy frost after 4am. Otherwise, clear, with a low around 37.
Tuesday
Patchy frost before 7am. Otherwise, sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles E Mount Hamilton CA
 37.33°N 121.47°W (Elev. 2113 ft)
Last Update:
12:26 am PST Jan 9, 2026
Forecast Valid:
8am PST Jan 9, 2026-6pm PST Jan 15, 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