National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Critical Fire Weather in the Plains; Unseasonably Warm in the Southwest and Southern U.S.

Unseasonably warm temperatures continue through the weekend across the Southwest and southern U.S., with more than 100 record or near record maximum temperatures forecast through the rest of the week and over the weekend. Elevated to critical fire weather conditions will persist across the Plains and Southeast U.S. this weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

64°F

18°C

Humidity 30%
Wind Speed NNW 12 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 28 Mar 11:00 PM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Overnight

    Overnight: Mostly clear, with a low around 58. North wind around 7 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. North wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. West wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 66. West wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 58.

    High: 58 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain. Partly sunny, with a high near 59.

    High: 59 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 58. North wind around 7 mph.
Sunday
Sunny, with a high near 74. North wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 56. West wind 9 to 13 mph, with gusts as high as 22 mph.
Monday
Partly sunny, with a high near 66. West wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 56. West southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 58.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 50.
Wednesday
A chance of rain. Partly sunny, with a high near 59.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A slight chance of rain before 11am. Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 63.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
Last Update:
1:26 am PDT Mar 29, 2026
Forecast Valid:
2am PDT Mar 29, 2026-6pm PDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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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