Heat Continues Across the Central and Western U.S.; Tracking Hazardous Weather Across the Northern U.S.

Early-season record warmth will persist across portions of the western and central U.S. through mid week, with high temperatures approaching 90 degrees from Texas to the Ohio Valley. Rain and mountain snow are possible across the Pacific Northwest Wednesday, with Severe Thunderstorms and wintry weather expected across the Northeast Thursday and Friday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

71°F

22°C

Humidity 19%
Wind Speed SW 2 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 24 Mar 04:00 PM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 55. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 70. West wind 11 to 15 mph, with gusts as high as 28 mph.

    High: 70 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48. West southwest wind 13 to 17 mph, with gusts as high as 32 mph.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. West southwest wind 9 to 14 mph becoming north 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 54. North wind 7 to 11 mph becoming west in the evening. Winds could gust as high as 23 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Friday Night

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

    Low: 53 °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

Detailed Forecast

Tonight
Mostly clear, with a low around 55. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 70. West wind 11 to 15 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 48. West southwest wind 13 to 17 mph, with gusts as high as 32 mph.
Thursday
Mostly sunny, with a high near 69. West southwest wind 9 to 14 mph becoming north in the morning. Winds could gust as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 54. North wind 7 to 11 mph becoming west in the evening. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 53.
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 54.
Monday
A slight chance of rain. Partly sunny, with a high near 68.
Monday Night
A chance of rain. Mostly cloudy, with a low around 53.
Tuesday
A chance of rain. Partly sunny, with a high near 60.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
1:25 pm PDT Mar 24, 2026
4pm PDT Mar 24, 2026-6pm PDT Mar 31, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database