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

Tracking Two Storms Impacting the Central and Eastern U.S. Through This Weekend

Two storm systems will track through the central and eastern U.S. through this weekend with areas of gusty winds, rain, and heavy snow. Severe thunderstorms are forecast Friday from the central Gulf Coast into parts of the lower Mississippi, Tennessee and Ohio Valleys. Heavy to excessive rainfall is forecast from the lower Mississippi River Valley to the Tennessee Valley which may bring flooding. Read More >

Hazardous Weather Conditions

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

33°F

1°C

Humidity 61%
Wind Speed NNW 24 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill20°F (-7°C)
Last update 08 Jan 07:50 PM PST
Extended Forecast for

3 Miles SSE Clayton CA

Cold Weather Advisory January 9, 01:00am until January 9, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 38. North northeast wind around 9 mph, with gusts as high as 18 mph.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 46. Northeast wind around 8 mph.

    High: 46 °F

    Sunny

  • Friday Night

    Friday Night: Patchy frost after 2am. Otherwise, mostly clear, with a low around 35. East northeast wind around 6 mph.

    Low: 35 °F

    Clear then
    Patchy Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 48. Northeast wind around 7 mph.

    High: 48 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Northeast wind 3 to 5 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 38. North northeast wind around 9 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 46. Northeast wind around 8 mph.
Friday Night
Patchy frost after 2am. Otherwise, mostly clear, with a low around 35. East northeast wind around 6 mph.
Saturday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 48. Northeast wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 38. Northeast wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 50.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 57.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
12:26 pm PST Jan 8, 2026
Forecast Valid:
8pm PST Jan 8, 2026-6pm PST Jan 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation