National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Severe Weather in the Upper Midwest; Blizzard Conditions in the Cascades; Heavy Rain and Thunderstorms in Hawaii

Significant severe thunderstorms, including the risk for strong to intense tornadoes, are expected across the Upper Midwest this afternoon and evening. An atmospheric river will bring blizzard conditions to the northern Cascades. A powerful Kona storm is expected to impact Hawaii today into Saturday, bringing heavy rainfall and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Fulton, Oswego County Airport (KFZY)

Lat: 43.35°NLon: 76.39°WElev: 476ft.

Mostly Cloudy

64°F

18°C

Humidity 65%
Wind Speed NW 5 mph
Barometer 29.92 in (1013.3 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 10 Mar 3:54 pm EDT
Extended Forecast for

Port Byron NY

  • This Afternoon

    This Afternoon: A chance of showers. Mostly cloudy, with a high near 69. Light northwest wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 69. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 31. West wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 31 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: A chance of snow showers before 8am. Mostly cloudy, with a high near 36. Northwest wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 36 °F

    Chance Snow
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. West wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow before 2pm, then rain likely. Mostly cloudy, with a high near 42. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.

    High: 42 °F

    Chance Snow
    then
    Rain/Snow
    Likely

  • Friday Night

    Friday Night: Rain showers likely, possibly mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 28. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 28 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of showers. Mostly cloudy, with a high near 69. Light northwest wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 42. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 69. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 31. West wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
A chance of snow showers before 8am. Mostly cloudy, with a high near 36. Northwest wind around 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 26. West wind 5 to 9 mph becoming light after midnight. Winds could gust as high as 20 mph.
Friday
A chance of snow before 2pm, then rain likely. Mostly cloudy, with a high near 42. South wind 9 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
Friday Night
Rain showers likely, possibly mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 28. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 37.
Saturday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Sunday
A chance of rain and snow showers. Cloudy, with a high near 52. Chance of precipitation is 50%.
Sunday Night
Showers. Low around 35. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 46. Chance of precipitation is 80%.
Monday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 17. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Port Byron NY
 43.05°N 76.63°W (Elev. 400 ft)
Last Update:
3:58 pm EDT Mar 10, 2026
Forecast Valid:
4pm EDT Mar 10, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation