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

46°F

8°C

Humidity 34%
Wind Speed W 7 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Wind Chill42°F (6°C)
Last update 15 Apr 04:40 AM PDT
Extended Forecast for

4 Miles SSE Clayton CA

  • Today

    Today: Mostly sunny, with a high near 60. West southwest wind 10 to 14 mph, with gusts as high as 28 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. West southwest wind 11 to 17 mph, with gusts as high as 32 mph.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59. North wind 14 to 18 mph, with gusts as high as 38 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 48. North northwest wind 11 to 16 mph, with gusts as high as 31 mph.

    Low: 48 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 64. North wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 64 °F

    Sunny

  • Friday Night

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

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain, mainly after 11am. Partly sunny, with a high near 65.

    High: 65 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 60. West southwest wind 10 to 14 mph, with gusts as high as 28 mph.
Tonight
Mostly clear, with a low around 42. West southwest wind 11 to 17 mph, with gusts as high as 32 mph.
Thursday
Sunny, with a high near 59. North wind 14 to 18 mph, with gusts as high as 38 mph.
Thursday Night
Clear, with a low around 48. North northwest wind 11 to 16 mph, with gusts as high as 31 mph.
Friday
Sunny, with a high near 64. North wind 10 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 46.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
A chance of rain, mainly after 11am. Partly sunny, with a high near 65.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 50.
Monday
A chance of rain. Partly sunny, with a high near 61.
Monday Night
A chance of rain. Mostly cloudy, with a low around 51.
Tuesday
A chance of rain. Partly sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.9°N 121.9°W (Elev. 1814 ft)
Last Update:
1:56 am PDT Apr 15, 2026
Forecast Valid:
5am PDT Apr 15, 2026-6pm PDT Apr 21, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation