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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

55°F

13°C

Humidity 87%
Wind Speed N 9 MPH
Barometer 30.41 in (1029.8 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Jan 09:35 AM PST
Extended Forecast for

Napa CA

  • Today

    Today: Mostly sunny, with a high near 61. Calm wind becoming north around 5 mph in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind.

    High: 64 °F

    Areas Dense
    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, partly sunny, with a high near 64. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 64 °F

    Areas Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

  • Sunday

    Sunday: A slight chance of rain after 10am. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain and
    Areas Fog

Detailed Forecast

Today
Mostly sunny, with a high near 61. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Patchy dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Thursday
Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 64. Calm wind.
Thursday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 64. Calm wind becoming east northeast around 5 mph in the afternoon.
Friday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 42.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 63.
Saturday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 43.
Sunday
A slight chance of rain after 10am. Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 62.
Sunday Night
A slight chance of rain before 10pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 42.
Monday
Patchy fog. Otherwise, mostly sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Patchy fog. Otherwise, sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.27°N 122.28°W (Elev. 3 ft)
Last Update:
4:54 am PST Jan 28, 2026
Forecast Valid:
9am PST Jan 28, 2026-6pm PST Feb 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation