Tracking a Winter Storm; Unusual Early-Season Heat Wave in the Southwest

A major winter storm will organize across the Northern Plains today and then rapidly strengthen as it moves into the Great Lakes on Sunday. Heavy snow and blowing snow are likely to persist over the Great Lakes into Monday night. Dry and gusty winds will produce a critical fire risk across the central/southern Plains. An early heatwave will begin to intensify over the western U.S. into next week. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

72°F

22°C

Humidity 56%
Wind Speed SW 9 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 14 Mar 04:20 PM PDT
Extended Forecast for

2 Miles SSW Lake Berryessa CA

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

    Tonight: Mostly clear, with a low around 58. North northwest wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. North wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. North northwest wind 6 to 8 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 87. North wind around 6 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. North northwest wind 3 to 5 mph.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 58. North northwest wind 5 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 82. North wind 10 to 14 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 61. North northwest wind 6 to 8 mph.
Monday
Sunny, with a high near 87. North wind around 6 mph.
Monday Night
Clear, with a low around 64. North northwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lake Berryessa CA
 38.54°N 122.26°W (Elev. 1824 ft)
1:26 pm PDT Mar 14, 2026
4pm PDT Mar 14, 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