Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East

A significant, long-duration winter storm will bring widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Widespread travel disruptions, prolonged power outages, and vast tree damage is likely. Frigid temperatures, gusty winds, and dangerous wind chills will expand from the north-central US to the Southern Plains, MS Valley, and Midwest. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

51°F

11°C

Humidity 34%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 23 Jan 07:20 AM PST
Extended Forecast for

2 Miles S Clayton CA

  • Today

    Today: Mostly sunny, with a high near 58. Calm wind becoming north northwest around 6 mph in the morning.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. Light and variable wind. Winds could gust as high as 18 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60. North northeast wind 8 to 14 mph, with gusts as high as 25 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 39. East northeast wind 5 to 8 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 55. Calm wind becoming east around 5 mph in the afternoon.

    High: 55 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Monday Night

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

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 58. Calm wind becoming north northwest around 6 mph in the morning.
Tonight
Mostly clear, with a low around 42. Light and variable wind. Winds could gust as high as 18 mph.
Saturday
Sunny, with a high near 60. North northeast wind 8 to 14 mph, with gusts as high as 25 mph.
Saturday Night
Increasing clouds, with a low around 39. East northeast wind 5 to 8 mph, with gusts as high as 23 mph.
Sunday
Mostly cloudy, with a high near 55. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
A slight chance of rain after 4am. Mostly cloudy, with a low around 46.
Wednesday
A slight chance of rain. Partly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Clayton CA
 37.92°N 121.93°W (Elev. 600 ft)
12:26 am PST Jan 23, 2026
7am PST Jan 23, 2026-6pm PST Jan 29, 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