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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 3:16 pm CST Dec 31, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

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Tonight New Year's Day Friday Saturday Sunday Monday Tuesday Wednesday
Cloudy on Tonight Partly Sunny on New Year's Day Cloudy on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday
Low: 27°F High: 41°F High: 43°F High: 42°F High: 43°F High: 55°F High: 60°F High: 54°F
Low: 29°F Low: 30°F Low: 25°F Low: 34°F Low: 42°F Low: 37°F  
Cloudy Partly Sunny Cloudy Partly Sunny Mostly Sunny Sunny Mostly Sunny Mostly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 5:52 PM CST
Rel. Humidity: 69%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
32°
Clear
as of 6:35 PM CST
Rel. Humidity: 92%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
36°
Clear
as of 5:45 PM CST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
39°
Clear
as of 6:35 PM CST
Rel. Humidity: 75%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
3 MPH
200° South
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 27. West southwest wind around 5 mph becoming calm in the evening.

Partly Sunny on New Year's Day New Year's Day... Partly sunny, with a high near 41. North wind around 5 mph becoming calm in the morning.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 29. Calm wind.

Cloudy on Friday Friday... Cloudy, with a high near 43. Calm wind becoming east northeast around 6 mph in the morning.

Cloudy on Friday Night Friday Night... Cloudy, with a low around 30. Northeast wind around 5 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 42. North northwest wind around 6 mph.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 25. Light north wind.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 43. Calm wind becoming east around 5 mph.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 34. South wind 3 to 8 mph.

Sunny on Monday Monday... Sunny, with a high near 55. South wind 7 to 11 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 42. South wind around 6 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 60. Southwest wind 6 to 8 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 37. Southwest wind around 6 mph becoming northwest after midnight.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 54. Northwest wind 5 to 7 mph becoming south in the afternoon.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:13 AM
Sunset: 4:48 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:50 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:22 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.