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.

Overcast

55°F

13°C

Humidity 93%
Wind Speed E 3 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 11 Oct 9:53 pm EDT
Extended Forecast for

Waterloo NY

  • Tonight

    Tonight: Showers likely, mainly before 2am. Patchy fog after 3am. Otherwise, cloudy, with a low around 51. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 51 °F

    Showers
    Likely then
    Chance
    Showers and
    Patchy Fog

  • Columbus Day

    Columbus Day: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 68. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 68 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 55. Light and variable wind.

    Low: 55 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 76. South wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 58. Southwest wind around 5 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 20%.

    High: 66 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.

    Low: 43 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly before 2am. Patchy fog after 3am. Otherwise, cloudy, with a low around 51. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Columbus Day
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 68. Calm wind becoming northwest around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 55. Light and variable wind.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 76. South wind 7 to 9 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 58. Southwest wind around 5 mph. Chance of precipitation is 80%.
Wednesday
A slight chance of showers after 8am. Mostly cloudy, with a high near 66. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 60.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.
Friday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
Friday Night
Showers likely. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Saturday
A chance of rain and snow showers. Mostly cloudy, with a high near 46. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 52.
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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 11, 2026
Forecast Valid:
10pm EDT Oct 11, 2026-6pm EDT Oct 18, 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