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

Record Breaking Temperatures and Critical Fire Weather

More than 200 record or near record maximum temperatures are forecast across the southern half of the U.S. through the end of this week before additional record temperatures center back over the Southwest U.S. into the Rockies this weekend. Widespread record breaking warmth, low humidity, and gusty winds will produce critical fire weather today in the central Rockies to Plains. 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 13%
Wind Speed WNW 12 MPH
Barometer NA
Dewpoint 9°F (-13°C)
Visibility NA
Last update 25 Mar 05:30 AM PDT
Extended Forecast for

3 Miles SSE Clayton CA

  • Tonight

    Tonight: Partly cloudy, with a low around 48. West wind 9 to 17 mph, with gusts as high as 30 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 67. West northwest wind 9 to 13 mph becoming north in the morning. Winds could gust as high as 25 mph.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. North wind 7 to 10 mph becoming west in the evening. Winds could gust as high as 21 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72. North wind around 7 mph.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. Northwest wind 6 to 9 mph becoming southwest in the evening.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. West wind 9 to 17 mph, with gusts as high as 30 mph.
Thursday
Mostly sunny, with a high near 67. West northwest wind 9 to 13 mph becoming north in the morning. Winds could gust as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 54. North wind 7 to 10 mph becoming west in the evening. Winds could gust as high as 21 mph.
Friday
Partly sunny, with a high near 72. North wind around 7 mph.
Friday Night
Partly cloudy, with a low around 52. Northwest wind 6 to 9 mph becoming southwest in the evening.
Saturday
Sunny, with a high near 73.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly cloudy, with a high near 67.
Monday Night
A chance of rain. Mostly cloudy, with a low around 55.
Tuesday
Rain likely. Mostly cloudy, with a high near 60.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 51.
Wednesday
Rain likely. Mostly cloudy, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
2:41 pm PDT Mar 25, 2026
Forecast Valid:
3pm PDT Mar 25, 2026-6pm PDT Apr 1, 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