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

64°F

18°C

Humidity 32%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 05 Feb 03:20 PM PST
Extended Forecast for

2 Miles SSE Clayton CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming west around 6 mph in the afternoon.

    High: 69 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 49. West southwest wind around 6 mph.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 68. West northwest wind around 6 mph.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Southwest wind around 7 mph.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent 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 62.

    High: 62 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. Light and variable wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 69. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 49. West southwest wind around 6 mph.
Saturday
Sunny, with a high near 68. West northwest wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 48. Southwest wind around 7 mph.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
A 20 percent chance of rain before 10pm. Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 62.
Monday Night
A slight chance of rain. Mostly cloudy, with a low around 46.
Tuesday
A chance of rain, mainly after 10am. Partly sunny, with a high near 59.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain. Partly sunny, with a high near 58.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 43.
Thursday
A slight chance of rain. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Clayton CA
 37.92°N 121.93°W (Elev. 600 ft)
Last Update:
12:26 pm PST Feb 5, 2026
Forecast Valid:
3pm PST Feb 5, 2026-6pm PST Feb 12, 2026
 
Forecast Discussion
 
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Additional Resources

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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