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

77°F

25°C

Humidity 52%
Wind Speed S 10 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Aug 11:53 am EDT
Extended Forecast for

Waterloo NYSimilar City Names

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. South wind around 9 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 62. South wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 76. South wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 54. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 70. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 82. South wind around 9 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 62. South wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely, mainly before 4pm. Partly sunny, with a high near 76. South wind 7 to 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms likely before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 54. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 70. Southwest wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Monday Night
Showers likely before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo NYSimilar City Names
 42.9°N 76.87°W (Elev. 499 ft)
Last Update:
2:59 am EDT Aug 22, 2026
Forecast Valid:
12pm EDT Aug 22, 2026-6pm EDT Aug 28, 2026
 
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Additional Resources

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Chance of Precipitation