Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

49°F

9°C

Humidity 36%
Wind Speed SW 9 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 14 Apr 07:15 PM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 47 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 58. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 58 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46. West southwest wind 14 to 17 mph, with gusts as high as 32 mph.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 60. West wind 11 to 17 mph becoming north in the morning. Winds could gust as high as 36 mph.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 47. North northwest wind 10 to 15 mph, with gusts as high as 29 mph.

    Low: 47 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 47. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 58. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 46. West southwest wind 14 to 17 mph, with gusts as high as 32 mph.
Thursday
Sunny, with a high near 60. West wind 11 to 17 mph becoming north in the morning. Winds could gust as high as 36 mph.
Thursday Night
Clear, with a low around 47. North northwest wind 10 to 15 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
A chance of rain, mainly after 11am. Partly sunny, with a high near 63.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 51.
Monday
A chance of rain. Partly sunny, with a high near 56.
Monday Night
A chance of rain. Partly cloudy, with a low around 48.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
2:16 pm PDT Apr 14, 2026
8pm PDT Apr 14, 2026-6pm PDT Apr 21, 2026
 
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Additional Resources

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