Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

46°F

8°C

Humidity 100%
Wind Speed SE 5 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 46°F (8°C)
Visibility 6.00 mi
Wind Chill44°F (7°C)
Last update 20 Jan 07:20 PM PST
Extended Forecast for

8 Miles WNW Vacaville CA

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 51. Light north northeast wind.

    Low: 51 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. Light and variable wind.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Cloudy, with a low around 48. Light west northwest wind.

    Low: 48 °F

    Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 57. Light west southwest wind.

    High: 57 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45. West wind 3 to 5 mph.

    Low: 45 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Friday Night

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

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 51. Light north northeast wind.
Wednesday
Mostly cloudy, with a high near 55. Light and variable wind.
Wednesday Night
Cloudy, with a low around 48. Light west northwest wind.
Thursday
Mostly cloudy, with a high near 57. Light west southwest wind.
Thursday Night
Partly cloudy, with a low around 45. West wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 55.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Partly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Mostly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Vacaville CA
 38.39°N 122.11°W (Elev. 1365 ft)
7:24 pm PST Jan 20, 2026
7pm PST Jan 20, 2026-6pm PST Jan 27, 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