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

Heat Persists Across the Central and Western U.S.; Fire Weather Concerns in the Rockies and High Plains

Record-breaking heat expected in the Central and Western U.S. for the next several days. Gusty winds and low relative humidity will create elevated to critical fire weather conditions over portions of the Rockies and High Plains Wednesday and Thursday. Rain and mountain snow are possible across the Pacific Northwest into the Rockies through Wednesday. 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 13%
Wind Speed WNW 9 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Last update 24 Mar 09:05 PM PDT
Extended Forecast for

4 Miles S Clayton CA

  • Overnight

    Overnight: Mostly clear, with a low around 54. West wind around 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66. West wind 11 to 17 mph, with gusts as high as 30 mph.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. West wind 11 to 18 mph becoming north northwest after midnight. Winds could gust as high as 34 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. North wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. North wind 9 to 13 mph becoming west in the evening. Winds could gust as high as 24 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 54. West wind around 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 66. West wind 11 to 17 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 48. West wind 11 to 18 mph becoming north northwest after midnight. Winds could gust as high as 34 mph.
Thursday
Mostly sunny, with a high near 65. North wind 10 to 15 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 55. North wind 9 to 13 mph becoming west in the evening. Winds could gust as high as 24 mph.
Friday
Partly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 69.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 55.
Monday
A slight chance of rain. Partly sunny, with a high near 62.
Monday Night
A chance of rain. Mostly cloudy, with a low around 53.
Tuesday
A chance of rain. Partly sunny, with a high near 57.
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Forecast Area
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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 25, 2026
Forecast Valid:
1am PDT Mar 25, 2026-6pm PDT Mar 31, 2026
 
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