Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

San Jose / Reid / Hillv (KRHV)

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

Partly Cloudy

52°F

11°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 20 Jan 09:47 PM PST
Extended Forecast for

Mount Hamilton CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 49. Light south wind.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm.  Mostly cloudy, with a high near 59. Light and variable wind.

    High: 59 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before 10pm.  Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 56. Light northwest wind.

    High: 56 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. Light west northwest wind.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 49. Light south wind.
Wednesday
A 10 percent chance of rain after 4pm. Mostly cloudy, with a high near 59. Light and variable wind.
Wednesday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 44. Calm wind.
Thursday
Partly sunny, with a high near 56. Light northwest wind.
Thursday Night
Partly cloudy, with a low around 40. Light west northwest wind.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 55.
Saturday Night
Mostly clear, with a low around 40.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 58.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Hamilton CA
 37.35°N 121.64°W (Elev. 2398 ft)
2:13 am PST Jan 21, 2026
2am PST Jan 21, 2026-6pm PST Jan 27, 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