Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Current conditions at

Vacaville Nut Tree Airport (KVCB)

Lat: 38.37755°NLon: 121.95853°WElev: 105.0ft.

Mist

42°F

6°C

Humidity 100%
Wind Speed NNE 5 MPH
Barometer 30.33 in (1027.09 mb)
Dewpoint 42°F (6°C)
Visibility 5.00 mi
Wind Chill39°F (4°C)
Last update 09 Dec 02:53 AM PST
Extended Forecast for

5 Miles ENE Napa CA

  • Overnight

    Overnight: Widespread haze. Patchy fog before 4am, then patchy fog after 5am.  Otherwise, partly cloudy, with a steady temperature around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Tuesday

    Tuesday: Widespread haze before 10am. Areas of fog between 7am and 9am.  Otherwise, sunny, with a high near 51. Calm wind.

    High: 51 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a steady temperature around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 52. Light east northeast wind.

    High: 52 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44. Calm wind.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
Widespread haze. Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a steady temperature around 42. Calm wind.
Tuesday
Widespread haze before 10am. Areas of fog between 7am and 9am. Otherwise, sunny, with a high near 51. Calm wind.
Tuesday Night
Mostly clear, with a steady temperature around 47. Calm wind.
Wednesday
Sunny, with a high near 52. Light east northeast wind.
Wednesday Night
Mostly clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 56.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 41.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly sunny, with a high near 53.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
A slight chance of showers. Partly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ENE Napa CA
 38.31°N 122.2°W (Elev. 1243 ft)
1:20 am PST Dec 9, 2025
3am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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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