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.

A Few Clouds

70°F

21°C

Humidity 97%
Wind Speed Calm
Barometer 30.05 in (1016.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 14 Jul 8:53 pm EDT
Extended Forecast for

Waterloo NY

  • Tonight

    Tonight: Patchy fog between 4am and 5am. Otherwise, mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 89. Calm wind.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 89. Heat index values as high as 96. South wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.

    High: 88 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog between 4am and 5am. Otherwise, mostly clear, with a low around 67. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, sunny, with a high near 89. Calm wind.
Tuesday Night
Mostly clear, with a low around 70. Light and variable wind.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 89. Heat index values as high as 96. South wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 40%.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Friday
A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly cloudy, with a low around 66.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo NY
 42.9°N 76.87°W (Elev. 499 ft)
Last Update:
7:22 pm EDT Jul 14, 2025
Forecast Valid:
9pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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