Arctic Air for the Northeast and Mid-Atlantic; Increase Moisture for Pacific Northwest; Active Pattern for Hawaii

An arctic cold front will impact the Great Lakes, Northeast and mid-Atlantic. Snow showers and squalls will accompany this system with increasing winds and falling temperatures. Damaging wind gusts may result in tree damage and power outages. Meanwhile, moisture returns for the Pacific Northwest and Hawaii this weekend with both coverage and intensity of rainfall and higher elevation snows. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

53°F

12°C

Humidity 38%
Wind Speed WNW 7 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Last update 07 Feb 08:35 PM PST
Extended Forecast for

4 Miles SSE Clayton CA

  • Tonight

    Tonight: Mostly clear, with a low around 49. West wind around 9 mph.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. West wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a steady temperature around 52. West southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly cloudy, with a high near 58. North wind around 9 mph, with gusts as high as 18 mph.

    High: 58 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 20 percent chance of rain after 10pm.  Mostly cloudy, with a low around 50. West wind around 9 mph becoming south southwest after midnight.

    Low: 50 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain before 4pm, then a chance of showers and thunderstorms after 4pm.  Mostly cloudy, with a high near 54. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 54 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 10pm, then a chance of rain after 10pm.  Mostly cloudy, with a low around 45. Chance of precipitation is 50%.

    Low: 45 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain, mainly before 4pm.  Mostly sunny, with a high near 54.

    High: 54 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 10pm.  Mostly clear, with a low around 43.

    Low: 43 °F

    Slight Chance
    Rain then
    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 49. West wind around 9 mph.
Sunday
Sunny, with a high near 60. West wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Increasing clouds, with a steady temperature around 52. West southwest wind around 11 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy, with a high near 58. North wind around 9 mph, with gusts as high as 18 mph.
Monday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 50. West wind around 9 mph becoming south southwest after midnight.
Tuesday
A chance of rain before 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 54. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms before 10pm, then a chance of rain after 10pm. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Wednesday
A chance of rain, mainly before 4pm. Mostly sunny, with a high near 54.
Wednesday Night
A slight chance of rain before 10pm. Mostly clear, with a low around 43.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 44.
Friday
A slight chance of rain. Partly sunny, with a high near 54.
Friday Night
A chance of rain. Mostly cloudy, with a low around 45.
Saturday
Rain likely. Mostly cloudy, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Clayton CA
 37.87°N 121.92°W (Elev. 2818 ft)
5:10 pm PST Feb 7, 2026
8pm PST Feb 7, 2026-6pm PST Feb 14, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database