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

55°F

13°C

Humidity 26%
Wind Speed NNW 6 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 23 Jan 12:25 AM PST
Extended Forecast for

3 Miles S Clayton CA

  • Overnight

    Overnight: Mostly clear, with a low around 44. South wind around 7 mph.

    Low: 44 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54. East southeast wind 5 to 7 mph becoming north in the afternoon.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 40. Northwest wind 6 to 10 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54. North northeast wind 11 to 15 mph, with gusts as high as 29 mph.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. Northeast wind around 9 mph, with gusts as high as 26 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Monday Night

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

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 44. South wind around 7 mph.
Friday
Sunny, with a high near 54. East southeast wind 5 to 7 mph becoming north in the afternoon.
Friday Night
Mostly clear, with a low around 40. Northwest wind 6 to 10 mph, with gusts as high as 24 mph.
Saturday
Sunny, with a high near 54. North northeast wind 11 to 15 mph, with gusts as high as 29 mph.
Saturday Night
Mostly clear, with a low around 38. Northeast wind around 9 mph, with gusts as high as 26 mph.
Sunday
Partly sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 41.
Monday
Mostly sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A slight chance of rain. Partly sunny, with a high near 55.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
12:26 am PST Jan 23, 2026
12am 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