Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather Threat from the Central Plains to the Great Lakes

Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, and thunderstorms to the Marianas Islands into Wednesday. Tropical Storm conditions are likely over Guam. Severe thunderstorms and heavy rain are likely across the Upper Mississippi Valley and Great Lakes region with potential for large to very large hail, damaging wind, and tornadoes through Tuesday. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

38°F

3°C

Humidity 100%
Wind Speed WSW 8 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 13 Apr 01:10 AM PDT
Extended Forecast for

3 Miles S Clayton CA

  • Today

    Today: Sunny, with a high near 57. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 57. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. Southwest wind 11 to 14 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. West wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 47.

    Low: 47 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 57. North northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 45. Southwest wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 57. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 46. Southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 59. West wind 10 to 15 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Sunny, with a high near 60.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
A slight chance of showers. Mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Clayton CA
 37.9°N 121.92°W (Elev. 1900 ft)
8:52 am PDT Apr 13, 2026
10am PDT Apr 13, 2026-6pm PDT Apr 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database