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Port Ontario, New York Weather Forecast
Port Ontario, New York Weather
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Weather Forecast for Port Ontario, New York : Oswego County
Issued: 3:36 pm EST Dec 21, 2025 Latitude: 43.5667357 Longitude: -76.1879826 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Christmas Day Friday Saturday Sunday
40% chance of snow on This Afternoon 30% chance of snow on Tonight 60% chance of snow on Monday 90% chance of rain & snow on Tuesday Partly Sunny on Wednesday 30% chance of rain on Christmas Day 70% chance of rain & snow on Friday 50% chance of rain & snow on Saturday Rain and Snow on Sunday
High: 31°F Low: 19°F High: 35°F High: 40°F High: 34°F High: 40°F High: 41°F High: 36°F High: 36°F
Low: 28°F Low: 29°F Low: 24°F Low: 31°F Low: 20°F Low: 22°F  
Snow Snow Snow Rain & Snow Partly Sunny Rain Rain & Snow Rain & Snow Rain and Snow
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Current Conditions at
FULTON - (KFZY)
27°
Feels like 13°F
Cloudy
Light Snow
as of 4:54 PM EST
Rel. Humidity: 68%
Dew Point: 18°F
Visibility: 7 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 32 MPH
250° West
Cloud Level(s): Few at 2400ft, Broken at 3300ft, Solid Overcast at 5000ft
Current Conditions at
SYRACUSE - (KSYR)
27°
Feels like 13°F
Cloudy
as of 4:54 PM EST
Rel. Humidity: 53%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.25 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 32 MPH
240° Southwest
Cloud Level(s): Broken at 4700ft, Solid Overcast at 6000ft
Current Conditions at
WATERTOWN - (KART)
28°
Feels like 14°F
Cloudy
as of 4:56 PM EST
Rel. Humidity: 63%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 33 MPH
280° West
Cloud Level(s): Scattered at 3500ft, Solid Overcast at 4500ft
Current Conditions at
FORT DRUM - (KGTB)
27°
Feels like 16°F
Cloudy
as of 4:55 PM EST
Rel. Humidity: 63%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 24 MPH
290° West
Cloud Level(s): Few at 2800ft, Broken at 3700ft, Solid Overcast at 4600ft
40% chance of snow This Afternoon This Afternoon... A chance of snow showers. Mostly cloudy, with a high near 31. Breezy, with a west wind around 21 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. Total daytime snow accumulation of less than one inch possible.
30% chance of snow Tonight Tonight... A chance of snow showers before 10pm, then a chance of snow showers after 3am. Mostly cloudy, with a low around 19. Northwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
60% chance of snow Monday Monday... Snow likely before 7am, then a chance of snow showers, mainly between 7am and 10am. Mostly cloudy, with a high near 35. Light and variable wind becoming southwest 5 to 8 mph in the morning. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
70% chance of rain & snow Monday Night Monday Night... A slight chance of rain before 7pm, then a chance of rain and snow between 7pm and 10pm, then snow likely after 10pm. Cloudy, with a low around 28. South wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
90% chance of rain & snow Tuesday Tuesday... Rain and snow, becoming all rain after 4pm. High near 40. Southeast wind 7 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
60% chance of rain & snow Tuesday Night Tuesday Night... Rain likely before 10pm, then rain and snow likely between 10pm and 1am, then a chance of snow after 1am. Cloudy, with a low around 29. West wind 14 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 34. Northwest wind 5 to 13 mph, with gusts as high as 23 mph.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 24. Calm wind becoming southeast around 6 mph after midnight.
30% chance of rain Christmas Day Christmas Day... A chance of showers after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
60% chance of rain Thursday Night Thursday Night... Showers likely, mainly after 1am. Cloudy, with a low around 31. Chance of precipitation is 60%.
70% chance of rain & snow Friday Friday... Rain and snow showers likely. Cloudy, with a high near 41. Chance of precipitation is 70%.
50% chance of rain & snow Friday Night Friday Night... A chance of rain and snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
50% chance of rain & snow Saturday Saturday... A chance of rain and snow showers. Mostly cloudy, with a high near 36. Chance of precipitation is 50%.
60% chance of rain & snow Saturday Night Saturday Night... Rain and snow showers likely. Cloudy, with a low around 22. Chance of precipitation is 60%.
Rain and Snow on Sunday Sunday... Rain and snow showers likely. Mostly cloudy, with a high near 36.
Current Radar Image


Sun Almanac for Port Ontario, New York
Sunrise: 07:35 AM
Sunset: 4:31 PM
Civil Sunrise:07:02 AM
Civil Sunset: 5:04 PM
Nautical Sunrise: 06:26 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:51 AM
Astro Sunset: 6:15 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.