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Louisville, New York Weather Forecast
Louisville, New York Weather
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Weather Forecast for Louisville, New York : St. Lawrence County
Issued: 1:00 pm EST Dec 21, 2025 Latitude: 44.8975496 Longitude: -75.0157628 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday
20% chance of snow on This Afternoon Mostly Cloudy on Tonight 30% chance of snow on Monday 80% chance of snow on Tuesday Partly Sunny on Wednesday Mostly Cloudy on Christmas Day 50% chance of snow on Friday 40% chance of snow on Saturday
High: 30°F Low: 10°F High: 25°F High: 32°F High: 28°F High: 30°F High: 30°F High: 23°F
Low: 20°F Low: 22°F Low: 16°F Low: 22°F Low: 12°F  
Snow Mostly Cloudy Snow Snow Partly Sunny Mostly Cloudy Snow Snow
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Current Conditions at
MASSENA - (KMSS)
28°
Feels like 15°F
Cloudy
as of 12:53 PM EST
Rel. Humidity: 63%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 32 MPH
260° West
Cloud Level(s): Solid Overcast at 4700ft
Current Conditions at
SARANAC LAKE - (KSLK)
21°
Feels like 8°F
Cloudy
as of 12:51 PM EST
Rel. Humidity: 62%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 26 MPH
260° West
Cloud Level(s): Solid Overcast at 3400ft
Current Conditions at
FORT DRUM - (KGTB)
28°
Feels like 17°F
Partly Cloudy
as of 12:55 PM EST
Rel. Humidity: 54%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 21 MPH
260° West
Cloud Level(s): Scattered at 3600ft, Scattered at 4700ft
Current Conditions at
PLATTSBURGH AFB - (KPBG)
30°
Feels like 19°F
Cloudy
as of 12:53 PM EST
Rel. Humidity: 50%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 23 MPH
280° West
Cloud Level(s): Solid Overcast at 5000ft
20% chance of snow This Afternoon This Afternoon... A 20 percent chance of snow showers. Partly sunny, with a high near 30. West wind around 16 mph, with gusts as high as 28 mph.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 10. West wind 5 to 11 mph.
30% chance of snow Monday Monday... A chance of snow showers between 8am and 2pm. Mostly cloudy, with a high near 25. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
30% chance of snow Monday Night Monday Night... A 30 percent chance of snow after 2am. Mostly cloudy, with a low around 20. Calm wind. Little or no snow accumulation expected.
80% chance of snow Tuesday Tuesday... Snow, mainly after 8am. High near 32. East wind 5 to 8 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
70% chance of snow Tuesday Night Tuesday Night... Snow likely, mainly before 1am. Cloudy, with a low around 22. Southeast wind 6 to 9 mph becoming west after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 28. West wind 5 to 9 mph.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 16. Light south wind.
Mostly Cloudy on Christmas Day Christmas Day... Mostly cloudy, with a high near 30. Light and variable wind becoming north 5 to 7 mph in the morning.
50% chance of snow Thursday Night Thursday Night... A 50 percent chance of snow showers. Cloudy, with a low around 22. Northeast wind 5 to 8 mph.
50% chance of snow Friday Friday... A 50 percent chance of snow. Cloudy, with a high near 30. North wind around 10 mph.
40% chance of snow Friday Night Friday Night... A 40 percent chance of snow showers. Mostly cloudy, with a low around 12. North wind 6 to 8 mph.
40% chance of snow Saturday Saturday... A 40 percent chance of snow showers. Mostly cloudy, with a high near 23. North wind 6 to 8 mph.
Current Radar Image


Sun Almanac for Louisville, New York
Sunrise: 07:35 AM
Sunset: 4:22 PM
Civil Sunrise:07:01 AM
Civil Sunset: 4:55 PM
Nautical Sunrise: 06:24 AM
Nautical Sunset: 5:33 PM
Astro Sunrise: 05:48 AM
Astro Sunset: 6:08 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.