Tracking Late Season Winter Storms
A moderate atmospheric river will continue to bring heavy snow over the Olympics, northern Cascades and northern Rockies Friday while heavy rain may bring flooding to coastal Oregon and Washington. A winter storm will continue to push across the Great Lakes and Northeast U.S. Friday and Saturday with areas of heavy snow and high winds. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
60°F
16°C
| Humidity | 6% |
| Wind Speed | WNW 9 MPH |
| Barometer | NA |
| Dewpoint | -5°F (-21°C) |
| Visibility | NA |
| Last update | 12 Mar 08:50 PM PDT |
Extended Forecast for
4 Miles S Clayton CA
Tonight
Low: 54 °F
Partly Cloudy
Friday
High: 74 °F
Mostly Sunny
Friday Night
Low: 53 °F
Partly Cloudy
Saturday
High: 75 °F
Sunny
Saturday Night
Low: 60 °F
Partly Cloudy
Sunday
High: 82 °F
Mostly Sunny
Sunday Night
Low: 61 °F
Partly Cloudy
Monday
High: 80 °F
Sunny
Monday Night
Low: 62 °F
Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 54. West wind around 9 mph.
Friday
Mostly sunny, with a high near 74. West wind 6 to 9 mph becoming north in the morning.
Friday Night
Partly cloudy, with a low around 53. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 75. West southwest wind 8 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 60. West wind 9 to 11 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Sunny, with a high near 80.
Monday Night
Clear, with a low around 62.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Clear, with a low around 63.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 82.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles S Clayton CA
37.87°N 121.92°W (Elev. 2818 ft)
37.87°N 121.92°W (Elev. 2818 ft)
1:25 pm PDT Mar 12, 2026
10pm PDT Mar 12, 2026-6pm PDT Mar 19, 2026
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