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Winthrop, New York Weather Forecast
Winthrop, New York Weather
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Weather Forecast for Winthrop, New York : St. Lawrence County
Issued: 12:55 pm EST Dec 7, 2025 Latitude: 44.7947761 Longitude: -74.7868595 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on This Afternoon 60% chance of snow on Tonight Sunny on Monday 30% chance of snow on Tuesday 100% chance of rain & snow on Wednesday 30% chance of snow on Thursday 30% chance of snow on Friday 30% chance of snow on Saturday
High: 20°F Low: 1 °F High: 13°F High: 27°F High: 35°F High: 24°F High: 22°F High: 21°F
Low: 1 °F Low: 21°F Low: 17°F Low: 11°F Low: 9 °F  
Snow Snow Sunny Snow Rain & Snow Snow Snow Snow
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Current Conditions at
MASSENA - (KMSS)
18°
Feels like 6°F
Cloudy
Light Snow
as of 1:33 PM EST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 1 Miles
Pressure: 30.01 in.
Flight Rule: IFR
Wind Data
9 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 2100ft
Current Conditions at
SARANAC LAKE - (KSLK)
21°
Cloudy
Light Snow Mist
as of 12:51 PM EST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 3/4 Miles
Pressure: 29.87 in.
Flight Rule: MVFR
Wind Data
7 MPH
060° Northeast
Cloud Level(s): Broken at 1900ft, Solid Overcast at 3300ft
Current Conditions at
PLATTSBURGH AFB - (KPBG)
19°
Cloudy
Light Snow
as of 12:53 PM EST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 1 1/4 Miles
Pressure: 30.03 in.
Flight Rule: IFR
Wind Data
6 MPH
340° North
Cloud Level(s): Solid Overcast at 2200ft
100% chance of snow This Afternoon This Afternoon... Snow. High near 20. Northeast wind around 7 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible.

60% chance of snow Tonight Tonight... Snow likely before 1am, then a slight chance of flurries between 1am and 2am. Mostly cloudy, with a low around 1. Wind chill values as low as -7. Light and variable wind becoming northwest 5 to 8 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Sunny on Monday Monday... Sunny, with a high near 13. Wind chill values as low as -8. West wind 5 to 7 mph.

Increasing Clouds on Monday Night Monday Night... Increasing clouds, with a low around 1. Wind chill values as low as -9. Southwest wind 3 to 5 mph.

30% chance of snow Tuesday Tuesday... A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 27. South wind 8 to 14 mph, with gusts as high as 24 mph. New snow accumulation of less than a half inch possible.

70% chance of snow Tuesday Night Tuesday Night... Snow likely. Cloudy, with a low around 21. South wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

100% chance of rain & snow Wednesday Wednesday... Snow before 9am, then rain and snow. High near 35. South wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

80% chance of rain & snow Wednesday Night Wednesday Night... Rain and snow, becoming all snow after 11pm. Low around 17. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

30% chance of snow Thursday Thursday... A 30 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 24. West wind around 10 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 11. West wind around 6 mph.

30% chance of snow Friday Friday... A 30 percent chance of snow showers. Partly sunny, with a high near 22. West wind 6 to 9 mph.

30% chance of snow Friday Night Friday Night... A 30 percent chance of snow showers. Mostly cloudy, with a low around 9. Southwest wind around 6 mph.

30% chance of snow Saturday Saturday... A 30 percent chance of snow showers. Mostly cloudy, with a high near 21. West wind 6 to 9 mph.

Current Radar Image


Sun Almanac for Winthrop, New York
Sunrise: 07:23 AM
Sunset: 4:18 PM
Civil Sunrise:06:50 AM
Civil Sunset: 4:52 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 5:28 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:04 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.