National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

46°F

8°C

Humidity 93%
Wind Speed SW 6 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 26 Dec 11:20 PM PST
Extended Forecast for

2 Miles SE Lake Berryessa CA

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Light and variable wind.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 50. North wind around 6 mph.

    High: 50 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 41. North northwest wind 6 to 8 mph.

    Low: 41 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 50. North wind around 7 mph.

    High: 50 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41. North wind 3 to 6 mph.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Light and variable wind.
Saturday
Mostly sunny, with a high near 50. North wind around 6 mph.
Saturday Night
Increasing clouds, with a low around 41. North northwest wind 6 to 8 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 50. North wind around 7 mph.
Sunday Night
Mostly clear, with a low around 41. North wind 3 to 6 mph.
Monday
Sunny, with a high near 53.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Patchy fog between 9am and 10am. Otherwise, mostly sunny, with a high near 53.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 42.
New Year's Day
A chance of showers. Patchy fog. Otherwise, mostly cloudy, with a high near 50.
Thursday Night
Showers likely. Mostly cloudy, with a low around 45.
Friday
A chance of showers. Partly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Lake Berryessa CA
 38.55°N 122.21°W (Elev. 440 ft)
Last Update:
12:27 pm PST Dec 26, 2025
Forecast Valid:
11pm PST Dec 26, 2025-6pm PST Jan 2, 2026
 
Forecast Discussion
 
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