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

69°F

21°C

Humidity 93%
Wind Speed SW 7 mph
Barometer 29.83 in (1009.5 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 3:53 am EDT
Extended Forecast for

Mays Mills NY

  • Overnight

    Overnight: Showers, mainly after 5am. Low around 68. Light southwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 68 °F

    Showers

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Northwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers between 2am and 3am. Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. Calm wind becoming southwest around 5 mph after midnight.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers, mainly after 5am. Low around 68. Light southwest wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Showers and thunderstorms likely, mainly before 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Northwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers between 2am and 3am. Partly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 61. Calm wind becoming southwest around 5 mph after midnight.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Wednesday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mays Mills NY
 42.67°N 77°W (Elev. 797 ft)
Last Update:
2:30 am EDT Aug 17, 2026
Forecast Valid:
4am EDT Aug 17, 2026-6pm EDT Aug 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