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

Lake Effect Snow Will Impact Southern St. Lawrence County From Monday Into Tuesday

A Winter Weather Advisory is in effect from 1 PM today to 1 PM Tuesday for lake effect snow in southern St. Lawrence County in northern New York. Total snow accumulations between 3 and 6 inches with isolated higher amounts possible, especially southeast of Route 11. Plan on slippery road conditions. Read More >

Current conditions at

Franklin County State Airport (KFSO)

Lat: 44.94°NLon: 73.1°WElev: 228ft.

Overcast

22°F

-6°C

Humidity 75%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 19 Jan 4:15 am EST
Extended Forecast for

3 Miles WSW Swanton VT

  • Overnight

    Overnight: A 20 percent chance of light snow. Mostly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Slight Chance
    Light Snow

  • M.L.King Day

    M.L.King Day: A slight chance of light snow before 7am, then a chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 27. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 27 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of snow showers, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Wind chill values as low as -1. Southwest wind 11 to 17 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.

    Low: 11 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 16. Wind chill values as low as -3. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 16 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9. South wind 7 to 10 mph.

    Low: 9 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 27. South wind 10 to 14 mph.

    High: 27 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 22. Breezy, with a south wind 17 to 20 mph. Chance of precipitation is 60%.

    Low: 22 °F

    Snow Showers
    Likely and
    Breezy

  • Thursday

    Thursday: Snow showers likely. Mostly cloudy, with a high near 33. South wind 13 to 15 mph. Chance of precipitation is 60%.

    High: 33 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 12. Southwest wind around 14 mph.

    Low: 12 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
A 20 percent chance of light snow. Mostly cloudy, with a low around 18. Calm wind.
M.L.King Day
A slight chance of light snow before 7am, then a chance of snow showers, mainly after 11am. Mostly cloudy, with a high near 27. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Monday Night
A 30 percent chance of snow showers, mainly before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Wind chill values as low as -1. Southwest wind 11 to 17 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.
Tuesday
Increasing clouds, with a high near 16. Wind chill values as low as -3. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 9. South wind 7 to 10 mph.
Wednesday
A 30 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 27. South wind 10 to 14 mph.
Wednesday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 22. Breezy, with a south wind 17 to 20 mph. Chance of precipitation is 60%.
Thursday
Snow showers likely. Mostly cloudy, with a high near 33. South wind 13 to 15 mph. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 12. Southwest wind around 14 mph.
Friday
Partly sunny, with a high near 15. West wind around 14 mph.
Friday Night
Mostly cloudy, with a low around -6. West wind around 14 mph.
Saturday
Mostly sunny and cold, with a high near 0. West wind 11 to 13 mph.
Saturday Night
Partly cloudy, with a low around -9. West wind 8 to 10 mph.
Sunday
Mostly sunny and cold, with a high near 4. Northwest wind around 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Swanton VT
 44.9°N 73.16°W (Elev. 98 ft)
Last Update:
12:56 am EST Jan 19, 2026
Forecast Valid:
4am EST Jan 19, 2026-6pm EST Jan 25, 2026
 
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Additional Resources

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Chance of Precipitation