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

63°F

17°C

Humidity 67%
Wind Speed N 4 MPH
Barometer 30.35 in (1027.77 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Jan 02:00 PM PST
Extended Forecast for

Sonoma CA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 60. Light west northwest wind.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy dense fog after 8pm. Otherwise, increasing clouds, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Areas of dense fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 62. Calm wind.

    High: 62 °F

    Areas Dense
    Fog then
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 11am. Otherwise, partly sunny, with a high near 62. Light east wind.

    High: 62 °F

    Areas Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41.

    Low: 41 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 63.

    High: 63 °F

    Areas 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: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 60.

    High: 60 °F

    Areas Fog
    then Mostly
    Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 60. Light west northwest wind.
Tonight
Patchy dense fog after 8pm. Otherwise, increasing clouds, with a low around 38. Calm wind.
Thursday
Areas of dense fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 62. Calm wind.
Thursday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 11am. Otherwise, partly sunny, with a high near 62. Light east wind.
Friday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41.
Saturday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 63.
Saturday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 43.
Sunday
Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 60.
Sunday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 41.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 62.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 40.
Tuesday
Patchy fog. Otherwise, sunny, with a high near 65.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
Last Update:
12:26 pm PST Jan 28, 2026
Forecast Valid:
2pm PST Jan 28, 2026-6pm PST Feb 3, 2026
 
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Additional Resources

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Chance of Precipitation