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

70°F

21°C

Humidity 53%
Wind Speed NW 9 mph
Barometer 29.94 in (1013.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Jun 11:53 am EDT
Extended Forecast for

Waterloo NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Northwest wind around 8 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: A chance of showers after 5am. Increasing clouds, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers. High near 66. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly before 2am. Cloudy, with a low around 56. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 56 °F

    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: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly 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 80. Chance of precipitation is 60%.

    High: 80 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Northwest wind around 8 mph.
Tonight
A chance of showers after 5am. Increasing clouds, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers. High near 66. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday Night
A chance of showers, mainly before 2am. Cloudy, with a low around 56. Light northwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth 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
Mostly 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 80. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 61. 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. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Saturday
Partly 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:
11:25 am EDT Jun 21, 2026
Forecast Valid:
12pm 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