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

27°C

80°F

Humidity 69%
Wind Speed S 6 km/h
Barometer 1014.6 mb (29.99 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 12 Jul 9:53 pm EDT
Extended Forecast for

Hammondsport NY

  • Tonight

    Tonight: Partly cloudy, with a low around 22. South wind 8 to 10 km/h.

    Low: 22 °C

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 33. Heat index values as high as 38. South wind 10 to 13 km/h. Chance of precipitation is 80%. New rainfall amounts between 7.5 mm and 1 cm possible.

    High: 33 °C

    Slight Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 19. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    Low: 19 °C

    T-storms then
    Showers
    Likely

  • Monday

    Monday: A chance of showers before 8am. Mostly sunny, with a high near 30. Northwest wind 3 to 8 km/h. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.

    High: 30 °C

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Calm wind.

    Low: 17 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 33.

    High: 33 °C

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19.

    Low: 19 °C

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly sunny and hot, with a high near 33. Chance of precipitation is 30%.

    High: 33 °C

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.

    Low: 21 °C

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 22. South wind 8 to 10 km/h.
Sunday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 33. Heat index values as high as 38. South wind 10 to 13 km/h. Chance of precipitation is 80%. New rainfall amounts between 7.5 mm and 1 cm possible.
Sunday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 19. Calm wind. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Monday
A chance of showers before 8am. Mostly sunny, with a high near 30. Northwest wind 3 to 8 km/h. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.
Monday Night
Mostly clear, with a low around 17. Calm wind.
Tuesday
Sunny and hot, with a high near 33.
Tuesday Night
Mostly clear, with a low around 19.
Wednesday
A chance of showers after 2pm. Mostly sunny and hot, with a high near 33. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Thursday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 29. Chance of precipitation is 50%.
Friday Night
A chance of thunderstorms. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 29. 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 m)
Last Update:
7:00 pm EDT Jul 12, 2025
Forecast Valid:
10pm EDT Jul 12, 2025-6pm EDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

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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