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.

Overcast

50°F

10°C

Humidity 67%
Wind Speed NE 7 mph
Barometer 30.32 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 15 Oct 8:55 am EDT
Extended Forecast for

Alton NY

  • Today

    Today: Cloudy early, then gradual clearing, with a high near 56. Northeast wind 5 to 10 mph.

    High: 56 °F

    Gradual
    Clearing

  • Tonight

    Tonight: A chance of showers before 1am, then rain likely between 1am and 2am, then periods of rain and possibly a thunderstorm after 2am. Low around 48. East wind 6 to 16 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Slight Chance
    Showers then
    Showers

  • Friday

    Friday: Periods of rain and possibly a thunderstorm. High near 70. Breezy, with a south wind 13 to 20 mph becoming west in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Rain and
    Breezy

  • Friday Night

    Friday Night: A chance of showers, mainly before 2am. Cloudy, with a low around 38. Breezy, with a north wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers and
    Breezy

  • Saturday

    Saturday: A slight chance of showers before 2pm. Mostly sunny, with a high near 46. North wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. Southwest wind around 6 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Southwest wind 6 to 8 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. South wind around 5 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

Today
Cloudy early, then gradual clearing, with a high near 56. Northeast wind 5 to 10 mph.
Tonight
A chance of showers before 1am, then rain likely between 1am and 2am, then periods of rain and possibly a thunderstorm after 2am. Low around 48. East wind 6 to 16 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Periods of rain and possibly a thunderstorm. High near 70. Breezy, with a south wind 13 to 20 mph becoming west in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers, mainly before 2am. Cloudy, with a low around 38. Breezy, with a north wind 14 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A slight chance of showers before 2pm. Mostly sunny, with a high near 46. North wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 35. Southwest wind around 6 mph.
Sunday
Sunny, with a high near 60. Southwest wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 38. South wind around 5 mph.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton NY
 43.22°N 77.05°W (Elev. 499 ft)
Last Update:
7:57 am EDT Oct 15, 2026
Forecast Valid:
9am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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