Winter Storm in the Central Appalachians through the Northeast; Heavy Snow in the Great Basin and Rockies

A winter storm will impact the central Appalachians to the Northeast through the night. Accumulating snow is expected for interior New England and the northern Mid-Atlantic. Scattered showers and occasional thunderstorms will persist across Florida and the Southeast coast. Locally heavy mountain snow is expected in the Great Basin and Rockies over the next couple of days. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

46°F

8°C

Humidity 61%
Wind Speed N 12 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 02 Dec 10:20 PM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Partly cloudy, with a low around 40. North northeast wind 3 to 6 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 49. North wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 40. North northeast wind around 5 mph.

    Low: 40 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 49. Northeast wind around 6 mph.

    High: 49 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 40. North northeast wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 49. North wind 7 to 10 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 40. North northeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 49. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 42. Calm wind.
Friday
Sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Sunny, with a high near 54.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Mostly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
2:32 pm PST Dec 2, 2025
10pm PST Dec 2, 2025-6pm PST Dec 9, 2025
 
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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