Heavy Lake Effect Snow Downwind of Lakes Erie and Ontario; Fire Weather Concerns in the Southern Plains and Southeast

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. There is increasing confidence in snow squalls causing bursts of snow & gusty winds on New Year's Eve. Elevated fire weather conditions will continue today over parts of the Southern Plains and across much of the Southeast U.S. Read More >

Current conditions at

Vacaville Nut Tree Airport (KVCB)

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

Fog

36°F

2°C

Humidity 100%
Wind Speed NE 5 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 36°F (2°C)
Visibility 0.25 mi
Wind Chill32°F (0°C)
Last update 30 Dec 05:20 AM PST
Extended Forecast for

2 Miles WSW Vacaville CA

Dense Fog Advisory until December 30, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 30, 12:00pm

    NOW until 12:00pm Tue

    Dense Fog Advisory

  • Overnight

    Low: 39 °F

    Areas Dense
    Fog

  • Tuesday

    Tuesday: Widespread dense fog, mainly before 8am. Patchy frost before 7am.  Otherwise, partly sunny, with a high near 50. North northeast wind around 6 mph.

    High: 50 °F

    Patchy Frost
    and Dense Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Cloudy, with a steady temperature around 47. North wind around 5 mph becoming calm  in the evening.

    Low: 47 °F

    Cloudy

  • Wednesday

    Wednesday: Rain, mainly after 4pm.  High near 49. Northeast wind 3 to 6 mph.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Rain.  Low around 47. Light north northeast wind.  Chance of precipitation is 90%.

    Low: 47 °F

    Rain

  • New Year's Day

    New Year's Day: Rain.  High near 55. Chance of precipitation is 90%.

    High: 55 °F

    Rain

  • Thursday Night

    Thursday Night: Rain, mainly before 4am, then showers likely and possibly a thunderstorm after 4am.  Low around 53. Chance of precipitation is 80%.

    Low: 53 °F

    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm, then rain after 10am.  Cloudy, with a high near 55.

    High: 55 °F

    Showers

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, partly cloudy, with a steady temperature around 39. Light north northeast wind.
Tuesday
Widespread dense fog, mainly before 8am. Patchy frost before 7am. Otherwise, partly sunny, with a high near 50. North northeast wind around 6 mph.
Tuesday Night
Cloudy, with a steady temperature around 47. North wind around 5 mph becoming calm in the evening.
Wednesday
Rain, mainly after 4pm. High near 49. Northeast wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain. Low around 47. Light north northeast wind. Chance of precipitation is 90%.
New Year's Day
Rain. High near 55. Chance of precipitation is 90%.
Thursday Night
Rain, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Low around 53. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm, then rain after 10am. Cloudy, with a high near 55.
Friday Night
Rain. Cloudy, with a low around 48.
Saturday
Rain likely. Cloudy, with a high near 52.
Saturday Night
Rain likely. Cloudy, with a low around 44.
Sunday
A chance of rain. Mostly cloudy, with a high near 51.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 45.
Monday
A chance of rain. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Vacaville CA
 38.36°N 121.99°W (Elev. 194 ft)
1:21 am PST Dec 30, 2025
5am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

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