Prolonged Extreme Cold; Eastern U.S. Winter Storm
Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
55°F
13°C
| Humidity | 15% |
| Wind Speed | W 2 MPH |
| Barometer | NA |
| Dewpoint | 9°F (-13°C) |
| Visibility | NA |
| Last update | 28 Jan 11:50 PM PST |
Extended Forecast for
2 Miles S Clayton CA
Overnight
Low: 44 °F
Partly Cloudy
Thursday
High: 62 °F
Sunny
Thursday Night
Low: 45 °F
Partly Cloudy
Friday
High: 63 °F
Partly Sunny
Friday Night
Low: 46 °F
Mostly Cloudy
Saturday
High: 63 °F
Partly Sunny
Saturday Night
Low: 47 °F
Mostly Cloudy
Sunday
High: 63 °F
Mostly Cloudy
Sunday Night
Low: 47 °F
Partly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 44. Light east wind.
Thursday
Sunny, with a high near 62. East northeast wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 45. Calm wind.
Friday
Partly sunny, with a high near 63. Northeast wind 5 to 7 mph.
Friday Night
Mostly cloudy, with a low around 46. East wind around 6 mph.
Saturday
Partly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
Mostly cloudy, with a high near 63.
Sunday Night
Partly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 65.
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)
7:43 pm PST Jan 28, 2026
12am PST Jan 29, 2026-6pm PST Feb 4, 2026
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