Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes
Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
58°F
14°C
| Humidity | 21% |
| Wind Speed | NE 2 MPH |
| Barometer | NA |
| Dewpoint | 19°F (-7°C) |
| Visibility | NA |
| Last update | 12 Jan 07:05 PM PST |
Extended Forecast for
Clayton CA
Tonight
Low: 42 °F
Mostly Clear
Tuesday
High: 58 °F
Sunny
Tuesday Night
Low: 43 °F
Mostly Clear
Wednesday
High: 57 °F
Sunny
Wednesday Night
Low: 42 °F
Mostly Clear
Thursday
High: 59 °F
Sunny
Thursday Night
Low: 43 °F
Mostly Clear
Friday
High: 59 °F
Sunny
Friday Night
Low: 42 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 42. East southeast wind around 7 mph.
Tuesday
Sunny, with a high near 58. East northeast wind around 8 mph.
Tuesday Night
Mostly clear, with a low around 43. East wind around 5 mph.
Wednesday
Sunny, with a high near 57. Northeast wind around 7 mph.
Wednesday Night
Mostly clear, with a low around 42. East northeast wind around 6 mph.
Thursday
Sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 59.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 44.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 44.
M.L.King Day
Mostly sunny, with a high near 59.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Clayton CA
37.91°N 121.96°W (Elev. 1299 ft)
37.91°N 121.96°W (Elev. 1299 ft)
12:41 pm PST Jan 12, 2026
7pm PST Jan 12, 2026-6pm PST Jan 19, 2026
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