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

Penn Yan, Penn Yan Airport (KPEO)

Lat: 42.64°NLon: 77.05°WElev: 902ft.

Fair

69°F

21°C

Humidity 76%
Wind Speed W 3 mph
Barometer 29.93 in (1012.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 17 Aug 9:53 pm EDT
Extended Forecast for

Hammondsport NY

  • Tonight

    Tonight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 80. Southwest wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 59. Calm wind.
Tuesday
Mostly sunny, with a high near 81. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 58. Calm wind.
Wednesday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 80. Southwest wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 50%.
Sunday
Showers likely. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Sunday Night
Showers likely. Partly cloudy, with a low around 57. Chance of precipitation is 60%.
Monday
A chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Hammondsport NY
 42.41°N 77.23°W (Elev. 801 ft)
Last Update:
6:21 pm EDT Aug 17, 2026
Forecast Valid:
10pm EDT Aug 17, 2026-6pm EDT Aug 24, 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