Above Average Temperatures for Most Today; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures are forecast today into Wednesday over most of the lower 48 states away from the Gulf Coast. A storm system passing across southern Canada will bring a wintry mix to the upper Great Lakes today. A trailing cold front will then bring the wintry mix from the central Appalachians through the Northeast U.S. Wednesday and Thursday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

65°F

18°C

Humidity 14%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 13 Jan 09:20 AM PST
Extended Forecast for

3 Miles S Clayton CA

  • Today

    Today: Sunny, with a high near 57. East northeast wind 6 to 8 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 45. Northeast wind 3 to 5 mph.

    Low: 45 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. Northeast wind around 7 mph.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 42. East northeast wind around 7 mph.

    Low: 42 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 57. East northeast wind around 9 mph.

    High: 57 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 57. East northeast wind 6 to 8 mph.
Tonight
Clear, with a low around 45. Northeast wind 3 to 5 mph.
Wednesday
Sunny, with a high near 56. Northeast wind around 7 mph.
Wednesday Night
Clear, with a low around 42. East northeast wind around 7 mph.
Thursday
Sunny, with a high near 57. East northeast wind around 9 mph.
Thursday Night
Clear, with a low around 43.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 44.
M.L.King Day
Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
12:26 am PST Jan 13, 2026
9am PST Jan 13, 2026-6pm PST Jan 19, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database