Significant Winter Storm to Bring Heavy Snow and Ice Impacts; Dangerously Cold Temperatures Expands Across the East; Severe Storm Threat in the Gulf States Sunday

A significant winter storm is underway, bringing widespread heavy snow, sleet, and freezing rain from the Southern Rockies to New England through Monday. Extremely cold air will follow, prolonging dangerous travel and infrastructure impacts into next week. Severe thunderstorms may produce damaging gusts and tornadoes across the eastern Gulf Coast states Sunday morning and afternoon. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

Lat: 37.881699°NLon: 121.914173°WElev: 3904.0ft.

NA

44°F

7°C

Humidity 25%
Wind Speed N 22 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 24 Jan 09:05 PM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 41. Northeast wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 52. Light and variable wind becoming southeast 5 to 8 mph in the morning.

    High: 52 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43. East wind around 7 mph.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56. East northeast wind around 7 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. East northeast wind around 6 mph.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly after 4am.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly before 10am.  Partly sunny, with a high near 53.

    High: 53 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm.  Partly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 41. Northeast wind 9 to 13 mph, with gusts as high as 23 mph.
Sunday
Increasing clouds, with a high near 52. Light and variable wind becoming southeast 5 to 8 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 43. East wind around 7 mph.
Monday
Mostly sunny, with a high near 56. East northeast wind around 7 mph.
Monday Night
Mostly clear, with a low around 41. East northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 44.
Wednesday
A chance of rain, mainly before 10am. Partly sunny, with a high near 53.
Wednesday Night
A slight chance of rain before 10pm. Partly cloudy, with a low around 44.
Thursday
Sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Partly sunny, with a high near 56.
Friday Night
Mostly cloudy, with a low around 46.
Saturday
Mostly cloudy, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
12:26 pm PST Jan 24, 2026
9pm PST Jan 24, 2026-6pm PST Jan 31, 2026
 
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Additional Resources

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