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

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

55°F

13°C

Humidity 27%
Wind Speed WNW 2 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 15 Apr 12:00 PM PDT
Extended Forecast for

2 Miles S Clayton CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 66. West southwest wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 66 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. West southwest wind 8 to 15 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 67. North wind 10 to 16 mph, with gusts as high as 31 mph.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 49. North northwest wind 9 to 14 mph, with gusts as high as 32 mph.

    Low: 49 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 72. North wind 8 to 10 mph, with gusts as high as 25 mph.

    High: 72 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

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

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain, mainly after 11am. Partly sunny, with a high near 71.

    High: 71 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 66. West southwest wind 11 to 14 mph, with gusts as high as 26 mph.
Tonight
Partly cloudy, with a low around 45. West southwest wind 8 to 15 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 67. North wind 10 to 16 mph, with gusts as high as 31 mph.
Thursday Night
Clear, with a low around 49. North northwest wind 9 to 14 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 72. North wind 8 to 10 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 48.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
A chance of rain, mainly after 11am. Partly sunny, with a high near 71.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 51.
Monday
A chance of rain. Partly sunny, with a high near 66.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Partly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Clayton CA
 37.92°N 121.93°W (Elev. 600 ft)
Last Update:
1:26 pm PDT Apr 15, 2026
Forecast Valid:
1pm PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation