National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Cold and Gusty Winds Anticipated This Weekend

A significant arctic outbreak will bring frigid temperatures and dangerously cold wind chills to the Northeast and Mid-Atlantic this weekend. Strong winds which could produce tree damage and power outages, and periods of snow squalls are also possible. Relief from this cold and a warming trend is forecast to commence by the beginning to middle of next week. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

62°F

17°C

Humidity 22%
Wind Speed S 8 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 05 Feb 11:20 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Today

    Today: Sunny, with a steady temperature around 62. East wind 6 to 9 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. East wind around 6 mph becoming southwest after midnight.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 62. South wind around 6 mph becoming west southwest in the afternoon.

    High: 62 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. West southwest wind around 9 mph.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62. West northwest wind around 6 mph.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of rain before 10pm. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a steady temperature around 62. East wind 6 to 9 mph.
Tonight
Mostly cloudy, with a low around 52. East wind around 6 mph becoming southwest after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 62. South wind around 6 mph becoming west southwest in the afternoon.
Friday Night
Mostly clear, with a low around 49. West southwest wind around 9 mph.
Saturday
Sunny, with a high near 62. West northwest wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
A slight chance of rain before 10pm. Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 58.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain. Partly sunny, with a high near 54.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Partly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
11:27 am PST Feb 5, 2026
Forecast Valid:
11am PST Feb 5, 2026-6pm PST Feb 11, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation