National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Penn Yan, Penn Yan Airport (KPEO)

Lat: 42.64°NLon: 77.05°WElev: 902ft.

Fair

27°C

80°F

Humidity 69%
Wind Speed S 6 km/h
Barometer 1014.6 mb (29.99 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 12 Jul 9:53 pm EDT
Extended Forecast for

Sampson NY

  • Tonight

    Tonight: A chance of showers and thunderstorms after 5am. Mostly clear, with a low around 23. South wind 11 to 14 km/h. Chance of precipitation is 30%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    Low: 23 °C

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. High near 31. Heat index values as high as 35. South wind 11 to 14 km/h. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 cm possible.

    High: 31 °C

    Chance
    T-storms then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 20. Southeast wind 5 to 8 km/h becoming southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 cm possible.

    Low: 20 °C

    Heavy Rain
    then Showers
    Likely

  • Monday

    Monday: A chance of showers before 8am. Mostly sunny, with a high near 28. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.

    High: 28 °C

    Chance
    Showers then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Calm wind.

    Low: 18 °C

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31.

    High: 31 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21.

    Low: 21 °C

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 30%.

    High: 31 °C

    Sunny then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.

    Low: 22 °C

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms after 5am. Mostly clear, with a low around 23. South wind 11 to 14 km/h. Chance of precipitation is 30%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Sunday
Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then showers and thunderstorms likely after 5pm. Some of the storms could produce heavy rainfall. High near 31. Heat index values as high as 35. South wind 11 to 14 km/h. Chance of precipitation is 90%. New rainfall amounts between 2 and 3 cm possible.
Sunday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 20. Southeast wind 5 to 8 km/h becoming southwest after midnight. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 cm possible.
Monday
A chance of showers before 8am. Mostly sunny, with a high near 28. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than 1 mm possible.
Monday Night
Mostly clear, with a low around 18. Calm wind.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
A chance of showers after 2pm. Mostly sunny, with a high near 31. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 29. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 27. Chance of precipitation is 40%.
Friday Night
A chance of thunderstorms. Partly cloudy, with a low around 18. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sampson NY
 42.73°N 76.9°W (Elev. 525 m)
Last Update:
7:00 pm EDT Jul 12, 2025
Forecast Valid:
10pm EDT Jul 12, 2025-6pm EDT Jul 19, 2025
 
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