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

54°F

12°C

Humidity 75%
Wind Speed Calm
Barometer 30.37 in (1028.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 10 Oct 7:53 pm EDT
Extended Forecast for

Waterloo NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. South wind around 6 mph.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly after 1pm. High near 62. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 2am. Low around 52. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers then
    Chance
    Showers

  • Columbus Day

    Columbus Day: Mostly cloudy, with a high near 67. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 67 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 54. Light and variable wind. Chance of precipitation is 20%.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 73. Chance of precipitation is 80%.

    High: 73 °F

    Chance
    T-storms then
    Showers

  • Tuesday Night

    Tuesday Night: Showers, mainly before 2am. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers between 8am and 2pm. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 51. South wind around 6 mph.
Sunday
Showers, mainly after 1pm. High near 62. South wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers, mainly before 2am. Low around 52. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
Mostly cloudy, with a high near 67. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 54. Light and variable wind. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. High near 73. Chance of precipitation is 80%.
Tuesday Night
Showers, mainly before 2am. Low around 54. Chance of precipitation is 80%.
Wednesday
A chance of showers between 8am and 2pm. Mostly cloudy, with a high near 62. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Friday
Showers likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
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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 Oct 10, 2026
Forecast Valid:
8pm EDT Oct 10, 2026-6pm EDT Oct 17, 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