Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

45°F

7°C

Humidity 93%
Wind Speed E 14 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill39°F (4°C)
Last update 07 Dec 10:20 AM PST
Extended Forecast for

7 Miles SW Lake Berryessa CA

  • Today

    Today: Mostly sunny, with a high near 57. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. North wind 8 to 13 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog before 10pm.  Otherwise, mostly clear, with a low around 44. Calm wind becoming north 5 to 7 mph after midnight.

    Low: 44 °F

    Patchy Fog
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. North wind 5 to 8 mph becoming calm  in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 10pm.  Otherwise, partly cloudy, with a low around 48.

    Low: 48 °F

    Patchy Fog
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 57. Calm wind becoming south southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 43. North wind 8 to 13 mph.
Monday
Sunny, with a high near 60. Calm wind becoming west 5 to 8 mph in the afternoon.
Monday Night
Patchy fog before 10pm. Otherwise, mostly clear, with a low around 44. Calm wind becoming north 5 to 7 mph after midnight.
Tuesday
Mostly sunny, with a high near 61. North wind 5 to 8 mph becoming calm in the afternoon.
Tuesday Night
Patchy fog before 10pm. Otherwise, partly cloudy, with a low around 48.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 62.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Lake Berryessa CA
 38.51°N 122.34°W (Elev. 699 ft)
2:33 am PST Dec 7, 2025
10am PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database