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

43°F

6°C

Humidity 40%
Wind Speed N 16 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 24 Jan 12:50 PM PST
Extended Forecast for

2 Miles SSE Clayton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 60. North northeast wind around 14 mph, with gusts as high as 21 mph.

    High: 60 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. East northeast wind 5 to 7 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 54. East wind 3 to 6 mph.

    High: 54 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. East northeast wind around 5 mph.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 60. East northeast wind around 6 mph.

    High: 60 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly after 4am.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am.  Partly sunny, with a high near 57.

    High: 57 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 60. North northeast wind around 14 mph, with gusts as high as 21 mph.
Tonight
Mostly clear, with a low around 39. East northeast wind 5 to 7 mph, with gusts as high as 21 mph.
Sunday
Increasing clouds, with a high near 54. East wind 3 to 6 mph.
Sunday Night
Mostly cloudy, with a low around 41. East northeast wind around 5 mph.
Monday
Mostly sunny, with a high near 60. East northeast wind around 6 mph.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 45.
Wednesday
A chance of rain, mainly before 10am. Partly sunny, with a high near 57.
Wednesday Night
A slight chance of rain before 10pm. Partly cloudy, with a low around 45.
Thursday
Sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Clayton CA
 37.92°N 121.93°W (Elev. 600 ft)
12:26 pm PST Jan 24, 2026
1pm PST Jan 24, 2026-6pm PST Jan 30, 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