Super Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes
Super Typhoon Sinlaku will bring destructive winds, widespread heavy rain/flooding, thunderstorms, and coastal impacts to the Marianas Islands into Wednesday. Typhoon conditions are likely over CNMI and tropical storm conditions over Guam. Severe thunderstorms and heavy rain are expected from the Southern Plains to the Great Lakes today. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
43°F
6°C
| Humidity | 83% |
| Wind Speed | W 9 MPH |
| Barometer | NA |
| Dewpoint | 39°F (4°C) |
| Visibility | NA |
| Wind Chill | 38°F (3°C) |
| Last update | 14 Apr 03:40 AM PDT |
Extended Forecast for
4 Miles SSE Clayton CA
Today
High: 58 °F
Sunny
Tonight
Low: 46 °F
Mostly Clear
Wednesday
High: 59 °F
Mostly Sunny
Wednesday Night
Low: 48 °F
Partly Cloudy
Thursday
High: 60 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Friday
High: 64 °F
Sunny
Friday Night
Low: 46 °F
Partly Cloudy
Saturday
High: 66 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 58. Southwest wind 8 to 11 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 46. West southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 59. West southwest wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 48. West southwest wind 14 to 17 mph, with gusts as high as 32 mph.
Thursday
Sunny, with a high near 60. West wind 13 to 15 mph becoming north in the morning. Winds could gust as high as 30 mph.
Thursday Night
Clear, with a low around 46.
Friday
Sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
A slight chance of rain. Mostly sunny, with a high near 63.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 51.
Monday
A chance of rain. Partly sunny, with a high near 58.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSE Clayton CA
37.9°N 121.9°W (Elev. 1814 ft)
37.9°N 121.9°W (Elev. 1814 ft)
1:43 am PDT Apr 14, 2026
9am PDT Apr 14, 2026-6pm PDT Apr 20, 2026
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