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

Williamson-Sodus Airport (KSDC)

Lat: 43.23°NLon: 77.12°WElev: 424ft.

Partly Cloudy

50°F

10°C

Humidity 71%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 11 Nov 4:15 pm EST
Extended Forecast for

Alton NY

  • Tonight

    Tonight: Rain likely, mainly after 5am. Cloudy, with a low around 37. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    then Rain
    Likely

  • Thursday

    Thursday: Rain, mainly before 3pm. High near 46. Northeast wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain, mainly after 1am. Cloudy, with a low around 34. North wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Chance Rain

  • Friday

    Friday: Rain and snow showers likely, becoming all rain after 10am. Cloudy, with a high near 42. North wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers. Cloudy, with a low around 31. North wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 45. Northwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Cloudy, with a low around 33. Northwest wind around 7 mph. Chance of precipitation is 40%.

    Low: 33 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 1pm. Mostly cloudy, with a high near 46. Northwest wind 8 to 10 mph. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Cloudy, with a low around 34.

    Low: 34 °F

    Cloudy

Detailed Forecast

Tonight
Rain likely, mainly after 5am. Cloudy, with a low around 37. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 3pm. High near 46. Northeast wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain, mainly after 1am. Cloudy, with a low around 34. North wind around 11 mph, with gusts as high as 26 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain and snow showers likely, becoming all rain after 10am. Cloudy, with a high near 42. North wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday Night
A chance of showers. Cloudy, with a low around 31. North wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of showers. Mostly cloudy, with a high near 45. Northwest wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A chance of showers. Cloudy, with a low around 33. Northwest wind around 7 mph. Chance of precipitation is 40%.
Sunday
A chance of showers before 1pm. Mostly cloudy, with a high near 46. Northwest wind 8 to 10 mph. Chance of precipitation is 30%.
Sunday Night
Cloudy, with a low around 34.
Monday
Partly sunny, with a high near 46.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Partly cloudy, with a low around 31.
Wednesday
Mostly sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Alton NY
 43.22°N 77.05°W (Elev. 499 ft)
Last Update:
3:57 pm EST Nov 11, 2026
Forecast Valid:
4pm EST Nov 11, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation