Winter Weather Across Portions of the Mid-Atlantic; Heavy Rain Along the Gulf Coast and Southeast

A storm system will continue to slowly move through the Gulf Coast and Southeast U.S. over the next couple of days, bringing a heavy rainfall threat through the weekend. Isolated instances of flooding may occur. On the north side of this storm system, colder air will support areas of mixed wintry precipitation and light snow from the Tennessee Valley to the Mid-Atlantic Friday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

49°F

9°C

Humidity 21%
Wind Speed N 11 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 04 Dec 06:50 PM PST
Extended Forecast for

2 Miles SSW Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 43. Light east northeast wind.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. Calm wind becoming south southwest around 5 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 59. Calm wind becoming north around 5 mph in the morning.

    High: 59 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47. Calm wind becoming east around 5 mph after midnight.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 43. Light east northeast wind.
Friday
Sunny, with a high near 58. Calm wind becoming north northeast 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 45. Calm wind becoming south southwest around 5 mph.
Saturday
Sunny, with a high near 59. Calm wind becoming north around 5 mph in the morning.
Saturday Night
Mostly clear, with a low around 47. Calm wind becoming east around 5 mph after midnight.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 59.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Clayton CA
 37.91°N 121.96°W (Elev. 1299 ft)
12:26 pm PST Dec 4, 2025
7pm PST Dec 4, 2025-6pm PST Dec 11, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database