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.

Partly Cloudy

49°F

9°C

Humidity 96%
Wind Speed NE 3 MPH
Barometer 30.4 in (1029.46 mb)
Dewpoint 48°F (9°C)
Visibility 7.00 mi
Last update 28 Jan 06:54 AM PST
Extended Forecast for

Sonoma CA

  • Today

    Today: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Patchy dense fog. Otherwise, partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Dense
    Fog

  • Thursday

    Thursday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 62. Calm wind.

    High: 62 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog. 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 63. Light east wind.

    High: 63 °F

    Areas Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 41.

    Low: 41 °F

    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 10pm. Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

  • Sunday

    Sunday: A slight chance of rain. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 61.

    High: 61 °F

    Slight Chance
    Rain and
    Areas Fog

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 60. Light and variable wind.
Tonight
Patchy dense fog. Otherwise, partly cloudy, with a low around 38. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 62. Calm wind.
Thursday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 40. Calm wind.
Friday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 63. Light east wind.
Friday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 41.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 63.
Saturday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 42.
Sunday
A slight chance of rain. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 61.
Sunday Night
A slight chance of rain before 10pm. Patchy fog. Otherwise, partly cloudy, with a low around 41.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 64.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 41.
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 122.43°W (Elev. 95 ft)
Last Update:
4:54 am PST Jan 28, 2026
Forecast Valid:
7am PST Jan 28, 2026-6pm PST Feb 3, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation