Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Canandaigua Airport (KIUA)

Lat: 42.91° N Lon: 77.33° W Elev: 814 ft.

Fair

62°F

17°C

Humidity 88%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 9 Aug 10:15 pm EDT
Detailed forecast for

Ontario County

Overnight
Partly cloudy late this evening, then becoming mostly cloudy. Lows in the mid 60s. Light south winds.
Monday
Showers likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs ranging from the mid 70s on the hilltops to the lower 80s across the lower elevations. Southwest winds 10 mph or less, becoming west 10 to 15 mph. Chance of rain 70 percent.
Monday Night
Partly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers overnight. Muggy with lows in the lower 60s. West winds 10 to 15 mph, becoming light. Chance of rain 40 percent.
Tuesday
Becoming mostly sunny. Highs ranging from the mid 70s on the hilltops to the upper 70s across the lower elevations. Light winds, becoming northwest around 10 mph.
Tuesday Night
Partly cloudy. Lows in the upper 50s. Light winds.
Wednesday
Partly sunny with a 40 percent chance of showers and thunderstorms. Highs in the lower 80s.
Wednesday Night
Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows around 60.
Thursday
Partly sunny with a chance of showers. Highs in the mid 70s. Chance of rain 30 percent.
Thursday Night
Partly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 30 percent.
Friday
Sunny. Highs in the lower 70s.
Friday Night
Mainly clear. Lows in the mid 50s.
Saturday
Sunny. Highs in the mid 70s.
Saturday Night
Partly cloudy. Lows in the mid 50s.
Sunday
Mostly sunny. Highs in the mid 70s.



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1000 PM EDT Sun Aug 9 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database