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.

Mist

43°F

6°C

Humidity 100%
Wind Speed E 19 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 43°F (6°C)
Visibility 1.25 mi
Wind Chill35°F (2°C)
Last update 20 Jan 03:20 AM PST
Extended Forecast for

Napa Co. Airport CA

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 38. East northeast wind around 5 mph.

    Low: 38 °F

    Patchy Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 58. East wind 6 to 8 mph.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. Calm wind.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 58. Calm wind becoming east around 5 mph in the afternoon.

    High: 58 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog before 2am, then patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Cloudy then
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 1am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 38. East northeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 58. East wind 6 to 8 mph.
Tuesday Night
Mostly cloudy, with a low around 42. Calm wind.
Wednesday
Mostly cloudy, with a high near 58. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Patchy fog before 2am, then patchy fog after 5am. Otherwise, mostly cloudy, with a low around 44. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 60.
Thursday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42.
Friday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 40.
Saturday
Mostly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 39.
Sunday
Partly sunny, with a high near 58.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
12:26 am PST Jan 20, 2026
3am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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Additional Resources

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