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

59°F

15°C

Humidity 93%
Wind Speed S 6 mph
Barometer 29.83 in (1009.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 17 Apr 1:53 am EDT
Extended Forecast for

Waterloo NY

  • Overnight

    Overnight: A chance of showers. Patchy fog. Otherwise, mostly cloudy, with a low around 54. Northwest wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. North wind around 7 mph.

    High: 61 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 75. South wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 11pm, then showers between 11pm and 5am, then rain after 5am. Low around 38. South wind around 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Showers

  • Sunday

    Sunday: Rain, mainly before 8am, then a chance of showers after 2pm. High near 44. Chance of precipitation is 80%.

    High: 44 °F

    Rain then
    Chance Rain

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers. Patchy fog. Otherwise, mostly cloudy, with a low around 54. Northwest wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. North wind around 7 mph.
Friday Night
Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.
Saturday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 75. South wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms before 11pm, then showers between 11pm and 5am, then rain after 5am. Low around 38. South wind around 11 mph becoming northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 90%.
Sunday
Rain, mainly before 8am, then a chance of showers after 2pm. High near 44. Chance of precipitation is 80%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 29. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 40.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 37.
Thursday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterloo NY
 42.9°N 76.87°W (Elev. 499 ft)
Last Update:
2:37 am EDT Apr 17, 2026
Forecast Valid:
2am EDT Apr 17, 2026-6pm EDT Apr 23, 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