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

84°F

29°C

Humidity 46%
Wind Speed E 5 mph
Barometer 30.07 in (1017.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 15 Jul 6:53 pm EDT
Extended Forecast for

Waterloo NYSimilar City Names

Heat Advisory July 16, 11:00am until July 16, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Widespread haze before midnight. Mostly clear, with a low around 70. Light south wind.

    Low: 70 °F

    Haze then
    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 90. Heat index values as high as 95. South wind around 6 mph. Chance of precipitation is 20%.

    High: 90 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. Heat index values as high as 96. West wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. West wind around 6 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Friday

    Friday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Friday Night

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

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Tonight
Widespread haze before midnight. Mostly clear, with a low around 70. Light south wind.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 90. Heat index values as high as 95. South wind around 6 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind 3 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. Heat index values as high as 96. West wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. West wind around 6 mph. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 74.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterloo NYSimilar City Names
 42.9°N 76.87°W (Elev. 499 ft)
Last Update:
6:39 pm EDT Jul 15, 2025
Forecast Valid:
7pm EDT Jul 15, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation