Active Spring Like Pattern Across the Eastern Half of the Country

The second storm will track across central and eastern portion of the country this weekend. Heavy wintry precipitation will affect the northern Plains to the upper peninsula of Michigan. Severe thunderstorms are expected along and ahead of the cold front, where very large hail, damaging winds and a few tornadoes are possible from the mid-Mississippi and Ohio Valleys to southern Plains. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

42°F

6°C

Humidity 50%
Wind Speed N 24 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 03 Apr 02:35 AM PDT
Extended Forecast for

Clayton CA

  • Today

    Today: Sunny, with a high near 70. North northeast wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 52. North northeast wind 5 to 8 mph becoming east after midnight.

    Low: 52 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 77. Northeast wind 6 to 8 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. North wind around 5 mph becoming calm  in the evening.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Sunday Night

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

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 70. North northeast wind 6 to 16 mph, with gusts as high as 26 mph.
Tonight
Clear, with a low around 52. North northeast wind 5 to 8 mph becoming east after midnight.
Saturday
Sunny, with a high near 77. Northeast wind 6 to 8 mph.
Saturday Night
Mostly clear, with a low around 57. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 72.
Tuesday Night
A slight chance of rain. Partly cloudy, with a low around 57.
Wednesday
A chance of rain. Partly sunny, with a high near 66.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
Clayton CA
 37.91°N 121.96°W (Elev. 1299 ft)
1:25 am PDT Apr 3, 2026
6am PDT Apr 3, 2026-6pm PDT Apr 9, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database