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

Hazardous Weather Conditions

Current conditions at

Penn Yan, Penn Yan Airport (KPEO)

Lat: 42.64°NLon: 77.05°WElev: 902ft.

Fair

23°F

-5°C

Humidity 81%
Wind Speed Calm
Barometer 30.20 in (1024.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 1 Dec 9:53 pm EST
Extended Forecast for

Hammondsport NY

Winter Weather Advisory December 2, 02:00am until December 2, 06:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow, mainly after 3am. Low around 20. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

    Low: 20 °F

    Cloudy then
    Snow

  • Tuesday

    Tuesday: Snow before 4pm, then a slight chance of rain and snow showers. High near 37. Light and variable wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New snow accumulation of around 3 inches.

    High: 37 °F

    Snow then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 20. Northwest wind around 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 37. Southwest wind 3 to 8 mph.

    High: 37 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 23. Southwest wind around 8 mph. Chance of precipitation is 20%.

    Low: 23 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Thursday

    Thursday: A chance of snow showers, mainly before 1pm. Partly sunny, with a high near 32. Chance of precipitation is 50%.

    High: 32 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly after 3am. Low around 20. Southeast wind 3 to 6 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.
Tuesday
Snow before 4pm, then a slight chance of rain and snow showers. High near 37. Light and variable wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New snow accumulation of around 3 inches.
Tuesday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 20. Northwest wind around 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Wednesday
Partly sunny, with a high near 37. Southwest wind 3 to 8 mph.
Wednesday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 23. Southwest wind around 8 mph. Chance of precipitation is 20%.
Thursday
A chance of snow showers, mainly before 1pm. Partly sunny, with a high near 32. Chance of precipitation is 50%.
Thursday Night
Partly cloudy, with a low around 8.
Friday
Mostly sunny, with a high near 30.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 38.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Partly sunny, with a high near 28.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hammondsport NY
 42.41°N 77.23°W (Elev. 801 ft)
Last Update:
6:13 pm EST Dec 1, 2025
Forecast Valid:
10pm EST Dec 1, 2025-6pm EST Dec 8, 2025
 
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