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 100%
Wind Speed N 5 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 43°F (6°C)
Visibility 7.00 mi
Wind Chill40°F (4°C)
Last update 19 Jan 01:35 AM PST
Extended Forecast for

Napa Co. Airport CA

  • Overnight

    Overnight: Areas of dense fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Areas Dense
    Fog

  • M.L.King Day

    M.L.King Day: Patchy dense fog before 9am.  Otherwise, mostly sunny, with a high near 62. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 62 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 38. Light east northeast wind.

    Low: 38 °F

    Patchy Fog

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. East northeast wind 6 to 9 mph.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 40. Light north northeast wind.

    Low: 40 °F

    Patchy Fog

  • Wednesday

    Wednesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 9am.  Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Patchy Fog

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
M.L.King Day
Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 62. Calm wind becoming southeast 5 to 7 mph in the morning.
Monday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 38. Light east northeast wind.
Tuesday
Mostly sunny, with a high near 61. East northeast wind 6 to 9 mph.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 40. Light north northeast wind.
Wednesday
Partly sunny, with a high near 60.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 42.
Thursday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 60.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 40.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 59.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 40.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 58.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 40.
Sunday
Patchy fog. Otherwise, mostly sunny, with a high near 58.
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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 19, 2026
1am PST Jan 19, 2026-6pm PST Jan 25, 2026
 
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Additional Resources

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