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 22 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 08 Jan 06:05 PM PST
Extended Forecast for

2 Miles S 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 low around 37. East northeast wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 50. Northeast wind around 9 mph.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Patchy frost after 2am. Otherwise, mostly clear, with a low around 35. East northeast wind 3 to 5 mph.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 9am. Otherwise, mostly sunny, with a high near 52. East northeast wind around 7 mph.

    High: 52 °F

    Areas Frost
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. Light east northeast wind.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54.

    High: 54 °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 55.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. East northeast wind 7 to 9 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 50. Northeast wind around 9 mph.
Friday Night
Patchy frost after 2am. Otherwise, mostly clear, with a low around 35. East northeast wind 3 to 5 mph.
Saturday
Areas of frost before 9am. Otherwise, mostly sunny, with a high near 52. East northeast wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 38. Light east northeast wind.
Sunday
Partly sunny, with a high near 54.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 55.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 58.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Clayton CA
 37.92°N 121.93°W (Elev. 600 ft)
Last Update:
12:26 pm PST Jan 8, 2026
Forecast Valid:
6pm PST Jan 8, 2026-6pm PST Jan 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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