Typhoon Sinlaku to Impact the Marianas and Guam; Severe Weather from the Southern Plains to the Great Lakes
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 | 92% |
| Wind Speed | SSW 2 MPH |
| Barometer | NA |
| Dewpoint | 41°F (5°C) |
| Visibility | NA |
| Last update | 14 Apr 10:40 AM PDT |
Extended Forecast for
4 Miles SSE Clayton CA
This Afternoon
High: 58 °F
Sunny
Tonight
Low: 47 °F
Increasing
CloudsWednesday
High: 58 °F
Decreasing
CloudsWednesday Night
Low: 46 °F
Mostly Clear
Thursday
High: 60 °F
Sunny
Thursday Night
Low: 47 °F
Clear
Friday
High: 64 °F
Sunny
Friday Night
Low: 46 °F
Mostly Clear
Saturday
High: 67 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 58. West southwest wind around 11 mph, with gusts as high as 23 mph.
Tonight
Increasing clouds, with a low around 47. Southwest wind 10 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 58. West southwest wind 11 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 46. West southwest wind 14 to 17 mph, with gusts as high as 32 mph.
Thursday
Sunny, with a high near 60. West wind 11 to 17 mph becoming north in the morning. Winds could gust as high as 36 mph.
Thursday Night
Clear, with a low around 47.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 50.
Sunday
A chance of rain. Partly 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 56.
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)
2:16 pm PDT Apr 14, 2026
2pm PDT Apr 14, 2026-6pm PDT Apr 20, 2026
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