Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
57°F
14°C
| Humidity | 23% |
| Wind Speed | S 3 MPH |
| Barometer | NA |
| Dewpoint | 20°F (-7°C) |
| Visibility | NA |
| Last update | 20 Jan 10:35 PM PST |
Extended Forecast for
4 Miles S Clayton CA
Tonight
Low: 49 °F
Mostly Cloudy
Wednesday
High: 53 °F
Cloudy
Wednesday Night
Low: 50 °F
Mostly Cloudy
Thursday
High: 56 °F
Partly Sunny
Thursday Night
Low: 46 °F
Partly Cloudy
Friday
High: 54 °F
Mostly Sunny
Friday Night
Low: 42 °F
Mostly Clear
Saturday
High: 54 °F
Sunny
Saturday Night
Low: 41 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly cloudy, with a low around 49. South southeast wind around 5 mph.
Wednesday
Cloudy, with a steady temperature around 53. South wind around 6 mph becoming light and variable in the morning.
Wednesday Night
Mostly cloudy, with a steady temperature around 50. Southwest wind around 6 mph.
Thursday
Partly sunny, with a high near 56. West wind around 6 mph.
Thursday Night
Partly cloudy, with a low around 46. Southwest wind around 9 mph.
Friday
Mostly sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 42.
Saturday
Sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 54.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
7:24 pm PST Jan 20, 2026
10pm PST Jan 20, 2026-6pm PST Jan 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
