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

Plattsburgh International Airport (KPBG)

Lat: 44.65°NLon: 73.47°WElev: 236ft.

Overcast

24°F

-4°C

Humidity 71%
Wind Speed Calm
Barometer 29.78 in (1008.8 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 19 Jan 8:53 am EST
Extended Forecast for

3 Miles NNW Lyon Mountain NY

  • M.L.King Day

    M.L.King Day: Snow showers likely, mainly after 3pm. Mostly cloudy, with a high near 21. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 21 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Tonight

    Tonight: Snow showers, mainly before 11pm. Low around 1. Wind chill values as low as -13. Southwest wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 1 °F

    Snow Showers
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: A 30 percent chance of snow showers, mainly after 1pm. Partly sunny and cold, with a high near 10. Wind chill values as low as -15. West wind 9 to 11 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

    High: 10 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 1. Wind chill values as low as -9. Southwest wind 6 to 8 mph, with gusts as high as 21 mph.

    Low: 1 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 23. South wind around 7 mph. New snow accumulation of less than a half inch possible.

    High: 23 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 15. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 15 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: Snow showers likely. Mostly cloudy, with a high near 27. West wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    High: 27 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 3. West wind around 10 mph, with gusts as high as 24 mph.

    Low: 3 °F

    Chance Snow
    Showers

  • Friday

    Friday: Partly sunny and cold, with a high near 10. West wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 10 °F

    Cold

Detailed Forecast

M.L.King Day
Snow showers likely, mainly after 3pm. Mostly cloudy, with a high near 21. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers, mainly before 11pm. Low around 1. Wind chill values as low as -13. Southwest wind 11 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Tuesday
A 30 percent chance of snow showers, mainly after 1pm. Partly sunny and cold, with a high near 10. Wind chill values as low as -15. West wind 9 to 11 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
Partly cloudy, with a low around 1. Wind chill values as low as -9. Southwest wind 6 to 8 mph, with gusts as high as 21 mph.
Wednesday
A 40 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 23. South wind around 7 mph. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 15. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday
Snow showers likely. Mostly cloudy, with a high near 27. West wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of snow showers before 1am. Mostly cloudy, with a low around 3. West wind around 10 mph, with gusts as high as 24 mph.
Friday
Partly sunny and cold, with a high near 10. West wind 8 to 11 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around -17. West wind around 8 mph.
Saturday
Mostly sunny and cold, with a high near -5. West wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around -19. West wind 5 to 7 mph.
Sunday
Mostly sunny and cold, with a high near 1. West wind 5 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Lyon Mountain NY
 44.77°N 73.96°W (Elev. 1407 ft)
Last Update:
12:56 am EST Jan 19, 2026
Forecast Valid:
9am EST Jan 19, 2026-6pm EST Jan 25, 2026
 
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Additional Resources

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Chance of Precipitation