A winter weather advisory is in effect for St. Lawrence County from 7 a.m. until 7 p.m. Thursday as three to eight inches of snow is possible, according to the National Weather Service (NWS).

Snowfall could be heavy at times, with a half inch of snow per hour possible, mainly this afternoon and evening, the service says.

Numerous snow showers and squalls will develop today and transition into light to moderate snow tonight and into Thursday, NWS says.

Visibility may be limited at times when snowfall is heavy and driving conditions will likely be hazardous, the service says.

Winds will be 10 to 15 mies per hours with 25 mph gusts possible. Temps will be in the upper 20s during the day and upper teens overnight.

Snow will likely taper off around 5 p.m. Thursday.

The forecast through early next week is as follows:

Thursday

Snow, mainly before 5pm. High near 24. Northwest wind 9 to 11 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Thursday Night

A chance of snow before 7pm, then a chance of snow showers between 7pm and midnight. Mostly cloudy, with a low around 12. West wind around 10 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Friday

Mostly sunny, with a high near 22. West wind around 8 mph.

Friday Night

Partly cloudy, with a low around 13. Southwest wind around 6 mph.

Saturday

Partly sunny, with a high near 35. Southwest wind around 5 mph.

Saturday Night

Mostly cloudy, with a low around 26. Southwest wind 5 to 7 mph.

Sunday

Partly sunny, with a high near 41. West wind around 8 mph.

Sunday Night

Partly cloudy, with a low around 25. West wind 6 to 8 mph.

Washington's Birthday

Mostly sunny, with a high near 37. West wind around 6 mph.

Monday Night

Mostly cloudy, with a low around 22. Light and variable wind becoming south around 5 mph after midnight.

Tuesday

A chance of rain and snow showers. Partly sunny, with a high near 40. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.