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

Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Hazardous Weather Conditions

Current conditions at

Williamson-Sodus Airport (KSDC)

Lat: 43.23°NLon: 77.12°WElev: 424ft.

Light Snow

34°F

1°C

Humidity 93%
Wind Speed S 8 mph
Barometer 29.28 in
Dewpoint 32°F (0°C)
Visibility 3.00 mi
Wind Chill27°F (-3°C)
Last update 10 Dec 12:15 pm EST
Extended Forecast for

5 Miles S Alton NY

Winter Storm Watch December 11, 01:00am until December 12, 07:00am
Click here for hazard details and duration
Winter Storm Watch

  • This Afternoon

    This Afternoon: A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 39. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

    High: 39 °F

    Rain/Snow
    Likely

  • Tonight

    Tonight: Rain likely, possibly mixed with snow showers before 9pm, then snow showers likely, possibly mixed with rain between 9pm and 10pm, then snow showers after 10pm. Low around 21. West wind 7 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Rain/Snow
    Likely then
    Snow Showers

  • Thursday

    Thursday: Snow showers. High near 26. Breezy, with a west wind 17 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 26 °F

    Snow Showers
    and Breezy

  • Thursday Night

    Thursday Night: Snow showers. Low around 20. West wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 20 °F

    Snow Showers

  • Friday

    Friday: A chance of snow showers before 1pm. Mostly cloudy, with a high near 30. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 21. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: A chance of snow showers. Mostly cloudy, with a high near 31. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 31 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 18. West wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 18 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: A chance of snow showers. Mostly cloudy, with a high near 24. Chance of precipitation is 50%.

    High: 24 °F

    Chance Snow
    Showers

Detailed Forecast

This Afternoon
A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 39. South wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
Rain likely, possibly mixed with snow showers before 9pm, then snow showers likely, possibly mixed with rain between 9pm and 10pm, then snow showers after 10pm. Low around 21. West wind 7 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow showers. High near 26. Breezy, with a west wind 17 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
Snow showers. Low around 20. West wind 10 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Friday
A chance of snow showers before 1pm. Mostly cloudy, with a high near 30. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Friday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 21. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 31. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Saturday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 18. West wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 24. Chance of precipitation is 50%.
Sunday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 14. Chance of precipitation is 30%.
Monday
Mostly cloudy, with a high near 24.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Tuesday
Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Alton NY
 43.16°N 77.06°W (Elev. 499 ft)
Last Update:
9:36 am EST Dec 10, 2025
Forecast Valid:
12pm EST Dec 10, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation