Major Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold in the North-Central U.S.

A large, long-duration winter storm is expected to bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies/Plains into the Mid-South beginning Friday, spreading eastward to the Mid-Atlantic and New England this weekend. An Arctic front will bring frigid temperatures and gusty winds that will lead to dangerous wind chills from the Northern Plains and Upper Midwest. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

58°F

14°C

Humidity 20%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 22 Jan 11:10 AM PST
Extended Forecast for

3 Miles ESE Danville CA

  • Today

    Today: Sunny, with a high near 64. Light west wind.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Patchy fog.  Otherwise, increasing clouds, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Friday

    Friday: Areas of dense fog before noon.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind.

    High: 59 °F

    Areas Dense
    Fog then
    Sunny

  • Friday Night

    Friday Night: Patchy fog.  Otherwise, mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Saturday

    Saturday: Sunny, with a high near 60. North northeast wind 5 to 10 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Areas of frost before 8am.  Otherwise, partly sunny, with a high near 58.

    High: 58 °F

    Areas Frost
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Light west wind.
Tonight
Patchy fog. Otherwise, increasing clouds, with a low around 42. Calm wind.
Friday
Areas of dense fog before noon. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 40. Calm wind.
Saturday
Sunny, with a high near 60. North northeast wind 5 to 10 mph, with gusts as high as 21 mph.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Areas of frost before 8am. Otherwise, partly sunny, with a high near 58.
Sunday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 38.
Monday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.
Monday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 38.
Tuesday
Areas of fog. Otherwise, partly sunny, with a high near 59.
Tuesday Night
Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Danville CA
 37.8°N 121.96°W (Elev. 604 ft)
3:11 am PST Jan 22, 2026
11am PST Jan 22, 2026-6pm PST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database