Major Winter Storm in the North-Central U.S.; Severe Weather from the Mid-South to Ohio Valley

A major winter storm will bring a swath of heavy snowfall, strong winds, blizzard conditions and freezing rain to the Northern Plains into the Great Lakes region. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-south to the Ohio Valley and the Southeast. Critical fire weather concerns shift to the southern Rockies and Plains. Read More >

Current conditions at

SJSU - Mount Diablo Summit Museum Rooftop (SJS02)

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

NA

57°F

14°C

Humidity 21%
Wind Speed N 21 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 15 Mar 11:15 AM PDT
Extended Forecast for

7 Miles SSW Brentwood CA

Heat Advisory March 16, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Partly cloudy, with a low around 58. West northwest wind 5 to 7 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 83. North wind 3 to 6 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 60. West northwest wind around 5 mph becoming calm  after midnight.

    Low: 60 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 62. Light and variable wind.

    Low: 62 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. West northwest wind 5 to 7 mph.
Monday
Sunny, with a high near 83. North wind 3 to 6 mph.
Monday Night
Clear, with a low around 60. West northwest wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 86. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 62. Light and variable wind.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny, with a high near 90.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 78.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSW Brentwood CA
 37.83°N 121.74°W (Elev. 932 ft)
1:25 pm PDT Mar 15, 2026
3pm PDT Mar 15, 2026-6pm PDT Mar 22, 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