Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

46°F

8°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 30.34 in (1027.43 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 28 Dec 11:00 AM PST
Extended Forecast for

Yountville CA

Cold Weather Advisory December 29, 01:00am until December 29, 09:00am
Click here for hazard details and duration
Cold Weather Advisory
  • Today

    Today: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 38. Light north wind.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 55. Northeast wind 3 to 5 mph.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog before 4am, then patchy fog after 5am.  Otherwise, mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Patchy frost before 7am.  Otherwise, sunny, with a high near 54. Calm wind becoming northeast around 5 mph in the morning.

    High: 54 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog before 3am, then patchy fog after 5am.  Otherwise, partly cloudy, with a low around 37.

    Low: 37 °F

    Patchy Fog

  • Wednesday

    Wednesday: A 10 percent chance of rain after 4pm.  Patchy fog before 10am.  Otherwise, partly sunny, with a high near 53.

    High: 53 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after 10pm.  Widespread fog, mainly between 2am and 4am.  Otherwise, mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain
    and Fog

  • New Year's Day

    New Year's Day: Rain likely, mainly after 10am.  Areas of fog before 1pm, then patchy fog after 4pm.  Otherwise, mostly cloudy, with a high near 50.

    High: 50 °F

    Rain Likely
    and Areas Fog

Detailed Forecast

Today
Sunny, with a high near 54. Light and variable wind.
Tonight
Mostly clear, with a low around 38. Light north wind.
Monday
Sunny, with a high near 55. Northeast wind 3 to 5 mph.
Monday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.
Tuesday
Patchy fog before 10am. Patchy frost before 7am. Otherwise, sunny, with a high near 54. Calm wind becoming northeast around 5 mph in the morning.
Tuesday Night
Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 37.
Wednesday
A 10 percent chance of rain after 4pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 53.
Wednesday Night
A chance of rain, mainly after 10pm. Widespread fog, mainly between 2am and 4am. Otherwise, mostly cloudy, with a low around 41.
New Year's Day
Rain likely, mainly after 10am. Areas of fog before 1pm, then patchy fog after 4pm. Otherwise, mostly cloudy, with a high near 50.
Thursday Night
Rain likely. Patchy fog. Otherwise, cloudy, with a low around 46.
Friday
Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 54.
Friday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 46.
Saturday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 52.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Yountville CA
 38.4°N 122.34°W (Elev. 184 ft)
6:40 am PST Dec 28, 2025
11am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database