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

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

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

42°F

6°C

Humidity 88%
Wind Speed ENE 4 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 27 Jan 02:54 AM PST
Extended Forecast for

Sonoma CA

  • Overnight

    Overnight: Areas of fog. Patchy frost between 4am and 5am. Otherwise, mostly cloudy, with a low around 36. East northeast wind around 8 mph.

    Low: 36 °F

    Patchy Frost
    and Areas Fog

  • Tuesday

    Tuesday: Rain likely after 4pm. Areas of fog before 10am. Otherwise, increasing clouds, with a high near 56. Light and variable wind becoming south 10 to 15 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Areas Fog
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 10pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 43. Calm wind becoming north northwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Rain Likely
    and Patchy
    Fog then
    Chance Rain
    and Areas Fog

  • Wednesday

    Wednesday: Areas of fog before noon. Otherwise, mostly sunny, with a high near 59. North northwest wind 3 to 8 mph.

    High: 59 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog. Otherwise, partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Patchy Fog

  • Thursday

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

    High: 62 °F

    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

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

    Low: 41 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 62.

    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

Detailed Forecast

Overnight
Areas of fog. Patchy frost between 4am and 5am. Otherwise, mostly cloudy, with a low around 36. East northeast wind around 8 mph.
Tuesday
Rain likely after 4pm. Areas of fog before 10am. Otherwise, increasing clouds, with a high near 56. Light and variable wind becoming south 10 to 15 mph in the morning. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain likely, mainly before 10pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 43. Calm wind becoming north northwest around 6 mph after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 59. North northwest wind 3 to 8 mph.
Wednesday Night
Patchy 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.
Thursday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41.
Friday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 62.
Friday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 41.
Saturday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 63.
Saturday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Sunday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 62.
Sunday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 42.
Monday
Areas of fog. Otherwise, mostly sunny, with a high near 63.
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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:
2:38 am PST Jan 27, 2026
Forecast Valid:
3am PST Jan 27, 2026-6pm PST Feb 2, 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