Sunday, October 18, 2026 | St. Lawrence County, NY
A winter weather advisory is in effect for southeastern St. Lawrence County as a band of lake effect snow will develop today dropping up to five inches of snow, according to the National Weather …
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A winter weather advisory is in effect for southeastern St. Lawrence County as a band of lake effect snow will develop today dropping up to five inches of snow, according to the National Weather Service (NWS).
The heaviest snowfall will be south of NY 3 and will last until around 7 p.m., the service says.
Road will likely be slippery and motorists are advised to slow down and allow extra time for traveling.
Snowfall rates up to 1/2 inch per hour may be possible with precipitation gradually diminishing this evening as the band of snow moves south out of the area.
Northern St. Lawrence County will see gusty winds, but little to no snow accumulation.
Highs will be in the mid to upper 20s around the county today and around 18 overnight.
The forecast through next Wednesday is as follows:
Friday
A 50 percent chance of snow. Cloudy, with a high near 20. West wind 5 to 10 mph. New snow accumulation of less than a half inch possible.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around -2. Wind chill values as low as -14. West wind 6 to 11 mph.
Saturday
Mostly sunny, with a high near 25. Southwest wind 3 to 6 mph.
Saturday Night
Mostly cloudy, with a low around 13. South wind 6 to 15 mph.
Sunday
Rain and snow likely before 2pm, then a chance of rain between 2pm and 4pm, then a chance of rain and snow after 4pm. Cloudy, with a high near 37. South wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Sunday Night
A chance of snow before 7pm, then a chance of snow showers between 7pm and 1am. Mostly cloudy, with a low around 11. West wind 10 to 14 mph. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 16. West wind 9 to 11 mph.
Monday Night
Mostly cloudy, with a low around -9. Northwest wind around 8 mph.
Tuesday
Mostly sunny and cold, with a high near 9. Northwest wind around 8 mph becoming west in the afternoon.
Tuesday Night
Mostly cloudy, with a low around -4. South wind around 7 mph.
Wednesday
Mostly cloudy, with a high near 21. Southwest wind 7 to 10 mph.
