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

61°F

16°C

Humidity 13%
Wind Speed WNW 12 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Last update 25 Mar 02:25 AM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Today

    Today: Sunny, with a high near 70. West wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 48. West southwest wind 12 to 17 mph becoming light west after midnight. Winds could gust as high as 31 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 69. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 25 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. North wind 8 to 11 mph becoming west in the evening. Winds could gust as high as 22 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72. North wind 6 to 8 mph.

    High: 72 °F

    Partly Sunny

  • Friday Night

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

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 70. West wind 10 to 15 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 48. West southwest wind 12 to 17 mph becoming light west after midnight. Winds could gust as high as 31 mph.
Thursday
Mostly sunny, with a high near 69. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 55. North wind 8 to 11 mph becoming west in the evening. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 72. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Monday
A slight chance of rain. Partly sunny, with a high near 66.
Monday Night
A chance of rain. Mostly cloudy, with a low around 54.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
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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:
1:56 am PDT Mar 25, 2026
Forecast Valid:
4am PDT Mar 25, 2026-6pm PDT Mar 31, 2026
 
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