Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. 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 through tonight, moving into the Mid-Atlantic Monday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Clear

55°F

13°C

Humidity 71%
Wind Speed NNE 3 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 15 Mar 10:35 PM PDT
Extended Forecast for

Sonoma 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 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 54. Calm wind.
Monday
Sunny, with a high near 88. Light and variable wind.
Monday Night
Clear, with a low around 56. Calm wind.
Tuesday
Sunny, with a high near 90. Calm wind.
Tuesday Night
Clear, with a low around 57. Calm wind.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Clear, with a low around 58.
Thursday
Sunny, with a high near 90.
Thursday Night
Clear, with a low around 58.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 57.
Saturday
Partly sunny, with a high near 83.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Partly sunny, with a high near 77.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
1:25 pm PDT Mar 15, 2026
10pm 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