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
65°F
18°C
| Humidity | 15% |
| Wind Speed | WNW 6 MPH |
| Barometer | NA |
| Dewpoint | 18°F (-8°C) |
| Visibility | NA |
| Last update | 12 Mar 05:40 PM PDT |
Extended Forecast for
2 Miles S Clayton CA
Tonight
Low: 52 °F
Partly Cloudy
Friday
High: 78 °F
Mostly Sunny
Friday Night
Low: 52 °F
Partly Cloudy
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 55 °F
Partly Cloudy
Sunday
High: 85 °F
Mostly Sunny
Sunday Night
Low: 59 °F
Partly Cloudy
Monday
High: 86 °F
Sunny
Monday Night
Low: 59 °F
Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 52. Southwest wind around 7 mph.
Friday
Mostly sunny, with a high near 78. Light and variable wind becoming west northwest 5 to 8 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 52. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 79. Southwest wind 6 to 8 mph becoming northwest in the afternoon.
Saturday Night
Partly cloudy, with a low around 55. West wind 7 to 9 mph.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Sunny, with a high near 86.
Monday Night
Clear, with a low around 59.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Clear, with a low around 60.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Clear, with a low around 60.
Thursday
Sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles S Clayton CA
37.92°N 121.93°W (Elev. 600 ft)
37.92°N 121.93°W (Elev. 600 ft)
1:25 pm PDT Mar 12, 2026
7pm PDT Mar 12, 2026-6pm PDT Mar 19, 2026
Additional Resources
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