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

55°F

13°C

Humidity 40%
Wind Speed WNW 4 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 02 Dec 12:50 PM PST
Extended Forecast for

4 Miles S Clayton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 53. Calm wind.

    High: 53 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. Calm wind becoming north northeast around 6 mph after midnight.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 50. North wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 50 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. North northeast wind around 5 mph.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 48. Northeast wind around 6 mph.

    High: 48 °F

    Mostly Sunny

  • Thursday Night

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

    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 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 53. Calm wind.
Tonight
Partly cloudy, with a low around 42. Calm wind becoming north northeast around 6 mph after midnight.
Wednesday
Sunny, with a high near 50. North wind 7 to 10 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 38. North northeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 48. Northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 52.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 52.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
1:03 pm PST Dec 2, 2025
1pm PST Dec 2, 2025-6pm PST Dec 8, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database