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.

A Few Clouds

74°F

23°C

Humidity 41%
Wind Speed NW 8 G 16 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 21 Jun 3:53 pm EDT
Extended Forecast for

Waterloo NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Northwest wind around 7 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 57. Calm wind.

    Low: 57 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers, mainly after 9am. High near 67. East wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 1am. Cloudy, with a low around 56. Northwest wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75. Northwest wind 6 to 9 mph.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

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

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Northwest wind around 7 mph.
Tonight
Increasing clouds, with a low around 57. Calm wind.
Monday
Showers, mainly after 9am. High near 67. East wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
Showers likely, mainly before 1am. Cloudy, with a low around 56. Northwest wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Mostly sunny, with a high near 75. Northwest wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 79.
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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:
2:30 pm EDT Jun 21, 2026
Forecast Valid:
4pm EDT Jun 21, 2026-6pm EDT Jun 27, 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