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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

55°F

13°C

Humidity 93%
Wind Speed SSE 5 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 54°F (12°C)
Visibility 7.00 mi
Last update 02 Jan 03:20 AM PST
Extended Forecast for

Napa CA

Coastal Flood Advisory January 3, 02:00pm until January 4, 02:00pm
Coastal Flood Advisory January 2, 03:36am until January 2, 07:00am
Coastal Flood Warning January 2, 07:00am until January 3, 02:00pm
Click here for hazard details and duration
Coastal Flood Advisory
Coastal Flood Advisory
Coastal Flood Warning
  •  
    Coastal Flood Advisory January 2, 03:36am until January 2, 07:00am

    NOW until 7:00am Fri

    Coastal Flood Advisory

  • Overnight

    Low: 50 °F

    Rain Likely

  • Friday

    Friday: Rain, mainly after 4pm. High near 57. Light southeast wind becoming south southeast 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance Rain
    then Rain

  • Friday Night

    Friday Night: Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain after 4am. Low around 53. Southeast wind 7 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers

  • Saturday

    Saturday: Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 55. South wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 55 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 51. South wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Showers

  • Sunday

    Sunday: Rain. High near 54. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 54 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 46. Chance of precipitation is 80%.

    Low: 46 °F

    Rain

  • Monday

    Monday: Rain likely. Cloudy, with a high near 52.

    High: 52 °F

    Rain Likely

Detailed Forecast

Overnight
Rain likely before 4am. Cloudy, with a low around 50. Southeast wind around 5 mph. Chance of precipitation is 70%.
Friday
Rain, mainly after 4pm. High near 57. Light southeast wind becoming south southeast 6 to 11 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then rain after 4am. Low around 53. Southeast wind 7 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Rain before 10am, then showers and possibly a thunderstorm after 10am. High near 55. South wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 1am, then rain after 1am. Low around 51. South wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 54. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Rain. Low around 46. Chance of precipitation is 80%.
Monday
Rain likely. Cloudy, with a high near 52.
Monday Night
A chance of rain. Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 43.
Tuesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 54.
Tuesday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Wednesday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 53.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 38.
Thursday
A slight chance of rain. Mostly sunny, with a high near 52.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
Last Update:
2:04 am PST Jan 2, 2026
Forecast Valid:
3am PST Jan 2, 2026-6pm PST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation