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, San Jose International Airport (KSJC)

Lat: 37.35917°NLon: 121.92417°WElev: 59.0ft.

Mostly Cloudy

46°F

8°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 21 Jan 06:55 AM PST
Extended Forecast for

Santa Clara CA

  • Today

    Today: Cloudy, with a high near 63. Calm wind.

    High: 63 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy fog before 10am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 63. Light northwest wind.

    High: 63 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

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

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Cloudy, with a high near 63. Calm wind.
Tonight
Mostly cloudy, with a low around 45. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 63. Light northwest wind.
Thursday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 44. Calm wind.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 61. Light and variable wind.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Clara CA
 37.35°N 121.96°W (Elev. 89 ft)
2:13 am PST Jan 21, 2026
7am 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