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 Chill31°F (-1°C)
Last update 12 Feb 12:05 AM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Overnight

    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.

    Low: 44 °F

    Chance Rain

  • Thursday

    Thursday: Sunny, with a high near 51. North northeast wind around 8 mph.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a steady temperature around 48. Northwest wind around 9 mph.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57. West northwest wind around 6 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47. South southwest wind around 9 mph.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Rain likely, mainly after 4am.  Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Rain Likely

  • Sunday

    Sunday: Rain.  Mostly cloudy, with a high near 55.

    High: 55 °F

    Rain

  • Sunday Night

    Sunday Night: Rain.  Cloudy, with a low around 49.

    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.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 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
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database