Marine and Coastal Impacts from Imelda; Unsettled Weather in the West

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine conditions and rip currents to much of the East Coast over the next several days. A series of Pacific frontal systems will bring waves of showers and thunderstorms to portions of northern California and the Pacific Northwest through midweek. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

53°F

12°C

Humidity 96%
Wind Speed SSW 9 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 30 Sep 12:40 PM PDT
Extended Forecast for

4 Miles S Clayton CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 62. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 62 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of drizzle after 11pm.  Mostly cloudy, with a temperature rising to around 62 by midnight. West southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 58 °F

    Slight Chance
    Drizzle

  • Wednesday

    Wednesday: A chance of drizzle before 11am, then a chance of rain after 11am.  Mostly cloudy, with a steady temperature around 60. South wind 3 to 6 mph.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of drizzle before 11pm.  Mostly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 61 °F

    Slight Chance
    Drizzle then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. West wind 5 to 7 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 62. Southwest wind 9 to 11 mph, with gusts as high as 20 mph.
Tonight
A slight chance of drizzle after 11pm. Mostly cloudy, with a temperature rising to around 62 by midnight. West southwest wind 5 to 7 mph becoming calm in the evening.
Wednesday
A chance of drizzle before 11am, then a chance of rain after 11am. Mostly cloudy, with a steady temperature around 60. South wind 3 to 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A slight chance of drizzle before 11pm. Mostly cloudy, with a low around 61. West southwest wind around 6 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 65. West wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 67.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 69.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 68.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
8:57 am PDT Sep 30, 2025
12pm PDT Sep 30, 2025-6pm PDT Oct 6, 2025
 
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Additional Resources

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