Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Heavy Rain Possible in the Southeast, while Severe Weather Expected in the Great Plains

Slow-moving convection will bring the threat of flash flooding today in the Southeast. Meanwhile, strong to severe thunderstorms are expected across the Great Plains and upper Mississippi River Valley this afternoon and evening. Primary threats will be thunderstorms with damaging winds, large hail, and locally heavy rain. Read More >

Current conditions at

Penn Yan, Penn Yan Airport (KPEO)

Lat: 42.64° N Lon: 77.05° W Elev: 902 ft.

Fair

81°F

27°C

Humidity 26%
Wind Speed NW 8 G 22 mph
Barometer 30.12 in (1019.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 24 May 4:53 pm EDT
Detailed forecast for

Ontario County

Tonight
Clear. Lows in the upper 50s. West winds 5 to 10 mph, becoming southwest.
Friday
Sunny, warm with highs in the mid 80s. Southwest winds 5 to 10 mph, becoming west 10 to 15 mph.
Friday Night
Mainly clear. Warm with lows in the lower 60s. West winds 5 to 10 mph, becoming southwest.
Saturday
Mostly sunny in the morning, then partly sunny with a chance of showers in the afternoon. Very warm with highs ranging from the lower 80s on the hilltops to the mid 80s across the lower elevations. Southwest winds 5 to 10 mph, becoming light. Chance of rain 40 percent.
Saturday Night
Mostly cloudy with a chance of showers. Warm with lows in the mid 60s. Light winds. Chance of rain 40 percent.
Sunday
Showers likely with a chance of thunderstorms. Highs in the lower 80s. Chance of rain 70 percent.
Sunday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 40 percent.
Memorial Day
Partly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 40 percent.
Monday Night
Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 40 percent.
Tuesday
Mostly sunny. Highs in the upper 70s.
Tuesday Night
Mainly clear. Lows in the upper 50s.
Wednesday
Mostly sunny. Highs in the upper 70s.
Wednesday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 30 percent.
Thursday
Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 70s. Chance of rain 30 percent.



Click Map For Forecast
442 PM EDT Thu May 24 2018
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database