Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

42°F

6°C

Humidity 92%
Wind Speed SSW 12 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 27 Jan 05:55 PM PST
Extended Forecast for

7 Miles SSW Brentwood CA

  • Tonight

    Tonight: A 30 percent chance of rain.  Mostly cloudy, with a low around 48. South southwest wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Chance Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. Calm wind becoming north 5 to 7 mph in the morning.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Light west wind.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 58. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 59.

    High: 59 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of rain. Mostly cloudy, with a low around 48. South southwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 56. Calm wind becoming north 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 42. Light west wind.
Thursday
Mostly sunny, with a high near 58. Calm wind becoming north northeast around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 44. Calm wind.
Friday
Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 61.
Saturday Night
Mostly cloudy, with a low around 46.
Sunday
A slight chance of rain after 10am. Mostly cloudy, with a high near 60.
Sunday Night
A slight chance of rain. Mostly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Brentwood CA
 37.83°N 121.74°W (Elev. 932 ft)
12:26 pm PST Jan 27, 2026
6pm PST Jan 27, 2026-6pm PST Feb 3, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database