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

Napa, Napa County Airport (KAPC)

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

Clear

75°F

24°C

Humidity 44%
Wind Speed S 4 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 15 Mar 02:35 PM PDT
Extended Forecast for

3 Miles SSE Lake Berryessa CA

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

    This Afternoon: Sunny, with a high near 84. North wind around 8 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Light north northwest wind.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 89. Calm wind becoming north around 5 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: 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.

    Low: 60 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. North wind around 8 mph.
Tonight
Partly cloudy, with a low around 58. Light north northwest wind.
Monday
Sunny, with a high near 89. Calm wind becoming north around 5 mph.
Monday Night
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.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 93.
Thursday Night
Clear, with a low around 62.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 87.
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 15, 2026
2pm PDT Mar 15, 2026-6pm PDT Mar 21, 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