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

60°F

16°C

Humidity 35%
Wind Speed N 15 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 29 Mar 03:10 AM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Overnight

    Overnight: Mostly clear, with a low around 58. Northeast wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. East northeast wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57. West southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 70. West wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 70 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 56. West southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain. Partly sunny, with a high near 62.

    High: 62 °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. Northeast wind around 6 mph.
Sunday
Sunny, with a high near 78. East northeast wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 57. West southwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 70. West wind 8 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 56. West southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
A 30 percent chance of rain, mainly after 11am. Mostly cloudy, with a high near 62.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 51.
Wednesday
A chance of rain. Partly sunny, with a high near 62.
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 59.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
Last Update:
1:26 am PDT Mar 29, 2026
Forecast Valid:
3am 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