Tracking Areas of Winter Weather and Heavy Rainfall

A cold front will move through the Great Lakes and Northeast U.S. today, bringing areas of snow and snow squalls which can bring rapid reductions to visibility and slick roads. A storm system will shift from the northern Gulf Coast through the Southeast U.S. today through Friday with areas of heavy to excessive rainfall and light snow further north. Heavy snow is also expected in the Rockies. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

46°F

8°C

Humidity 31%
Wind Speed N 14 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Wind Chill40°F (4°C)
Last update 04 Dec 07:50 AM PST
Extended Forecast for

3 Miles S Clayton CA

  • Today

    Today: Sunny, with a high near 50. East wind 6 to 8 mph.

    High: 50 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 46. Northeast wind around 5 mph becoming light and variable  in the evening.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54. North wind 3 to 6 mph.

    High: 54 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. Light west wind.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55. North wind 3 to 6 mph.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 50. East wind 6 to 8 mph.
Tonight
Mostly clear, with a steady temperature around 46. Northeast wind around 5 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 54. North wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 45. Light west wind.
Saturday
Sunny, with a high near 55. North wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 46.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 46.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 56.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
2:09 am PST Dec 4, 2025
8am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database