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Record Temperatures Expected Across the Southern US; Fire Weather Concerns in the Central US

Unseasonably warm temperatures continue today across the southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Dry and gusty winds will produce elevated to critical fire weather in the central and southern Plains and elevated conditions over portions of the Desert Southwest on Friday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

57°F

14°C

Humidity 35%
Wind Speed N 18 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 26 Mar 07:25 PM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 55. North northwest wind 6 to 8 mph becoming northeast.

    Low: 55 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 74. East northeast wind 6 to 9 mph becoming north northwest in the afternoon.

    High: 74 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. West wind 7 to 9 mph becoming south southwest after midnight.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 73. West wind 6 to 8 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. West southwest wind around 9 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 55. North northwest wind 6 to 8 mph becoming northeast.
Friday
Partly sunny, with a high near 74. East northeast wind 6 to 9 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around 56. West wind 7 to 9 mph becoming south southwest after midnight.
Saturday
Sunny, with a high near 73. West wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 53. West southwest wind around 9 mph.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Partly sunny, with a high near 68.
Monday Night
A chance of rain, mainly after 11pm. Mostly cloudy, with a low around 54.
Tuesday
A chance of rain. Mostly cloudy, with a high near 59.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52.
Wednesday
A chance of rain. Partly sunny, with a high near 57.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 47.
Thursday
A chance of rain. Mostly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
Last Update:
12:23 am PDT Mar 27, 2026
Forecast Valid:
12am PDT Mar 27, 2026-6pm PDT Apr 2, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation