Major Winter Storm Ongoing in the Upper Midwest and Great Lakes; Severe Weather Along the East Coast

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through today across the Upper Midwest and Upper Great Lakes. Widespread severe storms are expected across the entire eastern U.S. with the highest threat over the interior Mid-Atlantic, where there is a risk for damaging wind gusts and a few tornadoes. Heat continues to build in the West. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

81°F

27°C

Humidity 39%
Wind Speed SW 5 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 16 Mar 03:35 PM PDT
Extended Forecast for

3 Miles SSE Lake Berryessa CA

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

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Calm wind.

    Low: 59 °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 60. Calm wind.

    Low: 60 °F

    Clear

  • Wednesday

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

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 89. Light north wind.
Tonight
Clear, with a low around 59. Calm wind.
Tuesday
Sunny, with a high near 90. Calm wind.
Tuesday Night
Clear, with a low around 60. Calm wind.
Wednesday
Sunny, with a high near 90. Calm wind.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 62.
Friday
Sunny, with a high near 93.
Friday Night
Mostly clear, with a low around 61.
Saturday
Mostly sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 76.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Lake Berryessa CA
 38.53°N 122.23°W (Elev. 991 ft)
1:25 pm PDT Mar 16, 2026
3pm PDT Mar 16, 2026-6pm PDT Mar 23, 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