National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tracking Winter Weather and Frigid Temperatures Through This Weekend

A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

56°F

13°C

Humidity 18%
Wind Speed N 10 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 16 Jan 03:55 PM PST
Extended Forecast for

7 Miles SSW Brentwood CA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 42. Light and variable wind.

    Low: 42 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 57. Light and variable wind becoming northeast around 6 mph in the morning.

    High: 57 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 60 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 42. Light and variable wind.
Saturday
Areas of dense fog before 9am. Otherwise, mostly sunny, with a high near 57. Light and variable wind becoming northeast around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 45. Calm wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind becoming north northeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 44. Calm wind.
M.L.King Day
Sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Brentwood CA
 37.83°N 121.74°W (Elev. 932 ft)
Last Update:
12:26 pm PST Jan 16, 2026
Forecast Valid:
4pm PST Jan 16, 2026-6pm PST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation