Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Mid-Atlantic; Heavy Rain & Isolated Severe Thunderstorms in Southern California

Snow squalls are likely to cross the Lower Great Lakes this evening and the Ohio Valley through the interior Northeast/northern Mid-Atlantic overnight, before potentially reaching the I-95 corridor from D.C. to New York City early New Year’s Day morning. Heavy rain and isolated severe thunderstorms will impact coastal southern California including Los Angeles tonight into early on New Year's Day. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Rain

50°F

10°C

Humidity 87%
Wind Speed ENE 8 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 46°F (8°C)
Visibility 9.00 mi
Wind Chill47°F (8°C)
Last update 01 Jan 03:30 AM PST
Extended Forecast for

2 Miles SE Lake Berryessa CA

Wind Advisory January 2, 01:00pm until January 3, 01:00pm
Click here for hazard details and duration
Wind Advisory
  • Overnight

    Overnight: Showers.  Low around 49. East wind around 11 mph.  Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Showers

  • New Year's Day

    New Year's Day: Showers.  High near 57. East southeast wind 9 to 11 mph.  Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Showers

  • Thursday Night

    Thursday Night: Showers.  Low around 51. South southeast wind 8 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers.  Mostly cloudy, with a high near 57. Light southeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers.  Low around 52. Southeast wind 16 to 21 mph, with gusts as high as 29 mph.  Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 52 °F

    Showers

  • Saturday

    Saturday: Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers after 1pm.  High near 56. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, with thunderstorms also possible after 7pm.  Low around 51. Chance of precipitation is 100%.

    Low: 51 °F

    Showers

  • Sunday

    Sunday: Showers.  Cloudy, with a high near 54.

    High: 54 °F

    Showers

  • Sunday Night

    Sunday Night: Showers.  Cloudy, with a low around 49.

    Low: 49 °F

    Showers

Detailed Forecast

Overnight
Showers. Low around 49. East wind around 11 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
New Year's Day
Showers. High near 57. East southeast wind 9 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers. Low around 51. South southeast wind 8 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 57. Light southeast wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Showers. Low around 52. Southeast wind 16 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Showers before 10am, then showers and possibly a thunderstorm between 10am and 1pm, then showers after 1pm. High near 56. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers, with thunderstorms also possible after 7pm. Low around 51. Chance of precipitation is 100%.
Sunday
Showers. Cloudy, with a high near 54.
Sunday Night
Showers. Cloudy, with a low around 49.
Monday
Showers. Mostly cloudy, with a high near 51.
Monday Night
Showers likely. Mostly cloudy, with a low around 46.
Tuesday
A chance of showers. Partly sunny, with a high near 53.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 42.
Wednesday
A slight chance of showers. Patchy fog. Otherwise, partly sunny, with a high near 52.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Lake Berryessa CA
 38.55°N 122.21°W (Elev. 440 ft)
1:25 am PST Jan 1, 2026
4am PST Jan 1, 2026-6pm PST Jan 7, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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