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

Lake Effect Snow Warning and Winter Weather Advisories in effect in southern St. Lawrence and Franklin Counties from 1 AM Thursday through 7 PM Friday

Lake effect snow is expected to develop across St. Lawrence County first, and extend east Thursday afternoon, with total snow accumulations between 4 and 10 inches possible within lake effect snow showers. Travel could be very hazardous, especially for anyone traveling for the Thanksgiving holiday. Continue to monitor the latest forecasts for updates. Read More >

Current conditions at

Franklin County State Airport (KFSO)

Lat: 44.94°NLon: 73.1°WElev: 228ft.

Overcast

48°F

9°C

Humidity 96%
Wind Speed Calm
Barometer 29.69 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 26 Nov 12:15 pm EST
Extended Forecast for

Champlain NY

  • This Afternoon

    This Afternoon: A 40 percent chance of showers. Mostly cloudy, with a high near 50. Southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain showers before 4am, then a slight chance of rain and snow showers between 4am and 5am, then a slight chance of snow showers after 5am. Low around 33. South wind 5 to 9 mph becoming west in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 33 °F

    Showers then
    Chance
    Rain/Snow

  • Thanksgiving Day

    Thanksgiving Day: A slight chance of snow showers before 8am, then a slight chance of rain and snow showers between 8am and 9am, then a chance of rain showers after 9am. Partly sunny, with a high near 41. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 41 °F

    Slight Chance
    Rain/Snow
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of rain and snow showers before 8pm, then snow showers likely. Mostly cloudy, with a low around 28. Southwest wind around 8 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 28 °F

    Chance
    Rain/Snow
    then Snow
    Showers
    Likely

  • Friday

    Friday: Snow showers. High near 34. West wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Snow Showers

  • Friday Night

    Friday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 24. West wind 10 to 13 mph, with gusts as high as 28 mph.

    Low: 24 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 31. West wind 6 to 11 mph, with gusts as high as 25 mph.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 21. Light and variable wind.

    Low: 21 °F

    Partly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow before 2pm, then rain and snow. High near 39. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 39 °F

    Snow Likely
    then
    Rain/Snow

Detailed Forecast

This Afternoon
A 40 percent chance of showers. Mostly cloudy, with a high near 50. Southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain showers before 4am, then a slight chance of rain and snow showers between 4am and 5am, then a slight chance of snow showers after 5am. Low around 33. South wind 5 to 9 mph becoming west in the evening. Winds could gust as high as 26 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thanksgiving Day
A slight chance of snow showers before 8am, then a slight chance of rain and snow showers between 8am and 9am, then a chance of rain showers after 9am. Partly sunny, with a high near 41. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
A chance of rain and snow showers before 8pm, then snow showers likely. Mostly cloudy, with a low around 28. Southwest wind around 8 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Snow showers. High near 34. West wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 24. West wind 10 to 13 mph, with gusts as high as 28 mph.
Saturday
Mostly sunny, with a high near 31. West wind 6 to 11 mph, with gusts as high as 25 mph.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 21. Light and variable wind.
Sunday
Snow before 2pm, then rain and snow. High near 39. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday Night
Rain and snow likely before 8pm, then rain likely between 8pm and 3am, then a chance of rain and snow after 3am. Mostly cloudy, with a low around 29. South wind around 6 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers. Mostly cloudy, with a high near 38. West wind around 7 mph. Chance of precipitation is 40%.
Monday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 19. Light west wind.
Tuesday
A 50 percent chance of snow showers. Partly sunny, with a high near 31. West wind 5 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Champlain NY
 44.97°N 73.45°W (Elev. 200 ft)
Last Update:
5:42 am EST Nov 26, 2025
Forecast Valid:
12pm EST Nov 26, 2025-6pm EST Dec 2, 2025
 
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