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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

55°F

13°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 54°F (12°C)
Visibility 5.00 mi
Last update 01 Jan 02:35 PM PST
Extended Forecast for

7 Miles NE Yountville CA

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

  • New Year's Day

    New Year's Day: Rain likely, mainly before 3pm. Cloudy, with a high near 52. South southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain Likely

  • Tonight

    Tonight: Rain likely, mainly before 1am. Mostly cloudy, with a low around 49. South southeast wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Rain Likely

  • Friday

    Friday: A slight chance of rain before 7am, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 52. Southeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Rain. Low around 49. South southeast wind around 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    Low: 49 °F

    Rain

  • Saturday

    Saturday: Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 53. Breezy, with a south wind around 23 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 53 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Rain. Low around 49. Breezy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Rain and
    Breezy

  • Sunday

    Sunday: Rain. High near 52. Chance of precipitation is 100%.

    High: 52 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Rain

  • Monday

    Monday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 48.

    High: 48 °F

    Rain Likely

Detailed Forecast

New Year's Day
Rain likely, mainly before 3pm. Cloudy, with a high near 52. South southwest wind around 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain likely, mainly before 1am. Mostly cloudy, with a low around 49. South southeast wind 10 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A slight chance of rain before 7am, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 52. Southeast wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain. Low around 49. South southeast wind around 21 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday
Rain before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then rain and possibly a thunderstorm after 4pm. High near 53. Breezy, with a south wind around 23 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Rain. Low around 49. Breezy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Rain. High near 52. Chance of precipitation is 100%.
Sunday Night
Rain. Mostly cloudy, with a low around 46.
Monday
Rain likely, mainly before 4pm. Mostly cloudy, with a high near 48.
Monday Night
A chance of rain, mainly before 4am. Mostly cloudy, with a low around 44.
Tuesday
A slight chance of rain. Partly sunny, with a high near 49.
Tuesday Night
A slight chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A chance of rain. Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NE Yountville CA
 38.45°N 122.27°W (Elev. 1998 ft)
Last Update:
12:32 pm PST Jan 1, 2026
Forecast Valid:
2pm PST Jan 1, 2026-6pm PST Jan 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation