Strong Storm System Brings Heavy Mountain Snow to the Sierra Nevada and Critical Fire Weather Conditions to the Plains

A Pacific storm system will continue to bring low elevation rain and mountain snow to much of the West through Wednesday, with heavy mountain snow expected in the higher elevations of the Sierra Nevada. This system will also bring strong winds to the Intermountain West, Rockies, and Plains, which will create Critical fire weather conditions for the High Plains. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

52°F

11°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 21 Apr 10:00 PM PDT
Extended Forecast for

7 Miles S Lake Berryessa CA

  • Tonight

    Tonight: A chance of rain, mainly between 2am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 44. West southwest wind around 6 mph becoming calm  after midnight.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain and thunderstorms before 2pm, then a slight chance of rain between 2pm and 4pm.  Partly sunny, with a high near 60. Calm wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Light and variable wind.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain, mainly between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 44. West southwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of rain and thunderstorms before 2pm, then a slight chance of rain between 2pm and 4pm. Partly sunny, with a high near 60. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Mostly clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 70. Light and variable wind.
Thursday Night
Mostly clear, with a low around 47. West southwest wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 67.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles S Lake Berryessa CA
 38.48°N 122.25°W (Elev. 1198 ft)
8:32 pm PDT Apr 21, 2026
10pm PDT Apr 21, 2026-6pm PDT Apr 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database