
Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West
Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >
Current conditions at
SJSU - Mount Diablo Summit Museum Rooftop (SJS02)
Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.NA
38°F
3°C
| Humidity | 100% |
| Wind Speed | SSE 10 MPH |
| Barometer | NA |
| Dewpoint | 38°F (3°C) |
| Visibility | NA |
| Wind Chill | 31°F (-1°C) |
| Last update | 12 Feb 12:05 AM PST |
Extended Forecast for
4 Miles SSE Clayton CA
Overnight

Low: 44 °F
Chance Rain
Thursday

High: 51 °F
Sunny
Thursday Night

Low: 48 °F
Mostly Clear
Friday

High: 57 °F
Sunny
Friday Night

Low: 47 °F
Partly Cloudy
Saturday

High: 56 °F
Mostly Cloudy
Saturday Night

Low: 48 °F
Rain Likely
Sunday

High: 55 °F
Rain
Sunday Night

Low: 49 °F
Rain
Detailed Forecast
Overnight
A 30 percent chance of rain. Partly cloudy, with a low around 44. East southeast wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Sunny, with a high near 51. North northeast wind around 8 mph.
Thursday Night
Mostly clear, with a steady temperature around 48. Northwest wind around 9 mph.
Friday
Sunny, with a high near 57. West northwest wind around 6 mph.
Friday Night
Partly cloudy, with a low around 47. South southwest wind around 9 mph.
Saturday
Mostly cloudy, with a high near 56.
Saturday Night
Rain likely, mainly after 4am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Sunday
Rain. Mostly cloudy, with a high near 55.
Sunday Night
Rain. Cloudy, with a low around 49.
Washington's Birthday
Rain. Cloudy, with a high near 52.
Monday Night
Rain. Mostly cloudy, with a low around 46.
Tuesday
Rain, possibly mixed with snow. Mostly cloudy, with a high near 50.
Tuesday Night
Rain and snow likely. Mostly cloudy, with a low around 44.
Wednesday
Rain and snow likely. Mostly cloudy, with a high near 50.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles SSE Clayton CA
37.87°N 121.92°W (Elev. 2818 ft)
37.87°N 121.92°W (Elev. 2818 ft)
11:37 pm PST Feb 11, 2026
12am PST Feb 12, 2026-6pm PST Feb 18, 2026


