Unsettled Weather in the West; Marine and Coastal Impacts Along the East Coast

A series of Pacific fronts will bring periodic waves of showers and thunderstorms to parts of the Great Basin and Pacific Northwest the next few days. Swells, high surf, dangerous rip currents and areas of coastal flooding continue along much of the East Coast from both Humberto and Imelda. Unseasonably hot temperatures continue for much of the Plains and Midwest through the remainder of the week. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

59°F

15°C

Humidity 87%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 55°F (13°C)
Visibility NA
Last update 01 Oct 02:50 PM PDT
Extended Forecast for

3 Miles SSE Clayton CA

  • This Afternoon

    This Afternoon: A 40 percent chance of rain, mainly after 4pm.  Mostly cloudy, with a steady temperature around 64. West southwest wind around 10 mph.

    High: 64 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 1am.  Mostly cloudy, with a steady temperature around 64. Southwest wind 6 to 11 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 65. West wind 6 to 9 mph.

    High: 65 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. West wind 8 to 13 mph.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Northwest wind around 7 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of rain, mainly after 4pm. Mostly cloudy, with a steady temperature around 64. West southwest wind around 10 mph.
Tonight
A 40 percent chance of rain, mainly after 1am. Mostly cloudy, with a steady temperature around 64. Southwest wind 6 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 65. West wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 59. West wind 8 to 13 mph.
Friday
Sunny, with a high near 68. Northwest wind around 7 mph.
Friday Night
Clear, with a low around 60.
Saturday
Sunny, with a high near 73.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
2:28 pm PDT Oct 1, 2025
3pm PDT Oct 1, 2025-6pm PDT Oct 8, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database