Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

43°F

6°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.08 in (1018.63 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Jan 07:35 PM PST
Extended Forecast for

3 Miles SW Napa CA

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, increasing clouds, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Dense
    Fog

  • Tuesday

    Tuesday: Patchy dense fog before 10am.  Otherwise, increasing clouds, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.

    High: 59 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 60. Calm wind.

    High: 60 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog before midnight, then patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 10pm.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy dense fog. Otherwise, increasing clouds, with a low around 39. Calm wind.
Tuesday
Patchy dense fog before 10am. Otherwise, increasing clouds, with a high near 59. Calm wind becoming south around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 44. Calm wind.
Wednesday
Cloudy, with a high near 60. Calm wind.
Wednesday Night
Patchy fog before midnight, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 45. Calm wind.
Thursday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 62.
Thursday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 43.
Friday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 61.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 41.
Monday
Areas of fog. Otherwise, partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Napa CA
 38.26°N 122.34°W (Elev. 157 ft)
1:15 pm PST Jan 19, 2026
7pm PST Jan 19, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database