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

60°F

16°C

Humidity 26%
Wind Speed SE 11 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 05 Feb 08:40 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Today

    Today: Sunny, with a high near 66. Southeast wind 7 to 9 mph becoming south southwest in the afternoon.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 57. East wind around 6 mph becoming west southwest after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a steady temperature around 57. Southeast wind around 6 mph becoming west in the afternoon.

    High: 57 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. West southwest wind around 8 mph.

    Low: 49 °F

    Partly Cloudy

  • Saturday

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

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48.

    Low: 48 °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. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Rain

  • Monday

    Monday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 66. Southeast wind 7 to 9 mph becoming south southwest in the afternoon.
Tonight
Mostly cloudy, with a steady temperature around 57. East wind around 6 mph becoming west southwest after midnight.
Friday
Partly sunny, with a steady temperature around 57. Southeast wind around 6 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 49. West southwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 62. West northwest wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 52.
Monday
Mostly cloudy, with a high near 57.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 45.
Tuesday
A chance of rain. Mostly 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 50.
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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:
8:44 am PST Feb 5, 2026
Forecast Valid:
8am 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