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

50°F

10°C

Humidity 83%
Wind Speed Calm
Barometer 30.03 in (1017.2 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 15 Oct 8:53 pm EDT
Extended Forecast for

Penn Yan NY

  • Tonight

    Tonight: A chance of showers, then showers and possibly a thunderstorm after 2am. Temperature rising to around 59 by 5am. South wind 5 to 10 mph increasing to 12 to 17 mph after midnight. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F⇑

    Slight Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and thunderstorms before 2pm, then showers likely. High near 70. South wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers
    Likely then
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 5am. Cloudy, with a low around 35. Northwest wind 14 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Showers
    Likely

  • Saturday

    Saturday: Rain showers likely, possibly mixing with snow after 7am, then gradually ending. Mostly cloudy, then gradually becoming sunny, with a high near 46. Northwest wind around 15 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 46 °F

    Rain/Snow
    Likely then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. Southwest wind around 6 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, then showers and possibly a thunderstorm after 2am. Temperature rising to around 59 by 5am. South wind 5 to 10 mph increasing to 12 to 17 mph after midnight. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms before 2pm, then showers likely. High near 70. South wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely, mainly after 5am. Cloudy, with a low around 35. Northwest wind 14 to 16 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain showers likely, possibly mixing with snow after 7am, then gradually ending. Mostly cloudy, then gradually becoming sunny, with a high near 46. Northwest wind around 15 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Saturday Night
Mostly clear, with a low around 32. Southwest wind around 6 mph.
Sunday
Sunny, with a high near 61.
Sunday Night
Clear, with a low around 37.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 65.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Penn Yan NY
 42.65°N 77.06°W (Elev. 719 ft)
Last Update:
2:30 pm EDT Oct 15, 2026
Forecast Valid:
9pm EDT Oct 15, 2026-6pm EDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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