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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 2:21 am CST Nov 27, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Overnight Thanksgiving Day Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Overnight Sunny on Thanksgiving Day Sunny on Friday 90% chance of rain & snow on Saturday Mostly Cloudy on Sunday Mostly Cloudy on Monday Mostly Sunny on Tuesday Mostly Sunny on Wednesday
Low: 30°F High: 42°F High: 40°F High: 39°F High: 34°F High: 31°F High: 33°F High: 41°F
Low: 24°F Low: 29°F Low: 27°F Low: 20°F Low: 20°F Low: 20°F  
Mostly Cloudy Sunny Sunny Rain & Snow Mostly Cloudy Mostly Cloudy Mostly Sunny Mostly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 1:52 AM CST
Rel. Humidity: 51%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.33 in.
Flight Rule: VFR
Wind Data
7 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
36°
Clear
as of 2:15 AM CST
Rel. Humidity: 59%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.34 in.
Flight Rule: VFR
Wind Data
7 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
39°
Partly Cloudy
as of 2:15 AM CST
Rel. Humidity: 55%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.34 in.
Flight Rule: VFR
Wind Data
6 MPH
320° Northwest
Cloud Level(s): Scattered at 12000ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 30. Northwest wind around 7 mph.

Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 42. West northwest wind 6 to 13 mph.

Clear on Thursday Night Thursday Night... Clear, with a low around 24. Calm wind becoming northwest around 6 mph after midnight.

Sunny on Friday Friday... Sunny, with a high near 40. North northwest wind around 5 mph becoming calm in the afternoon.

40% chance of snow Friday Night Friday Night... A 40 percent chance of snow, mainly after 3am. Mostly cloudy, with a low around 29. Calm wind becoming southeast 5 to 7 mph after midnight.

90% chance of rain & snow Saturday Saturday... Rain and snow, becoming all rain after 3pm. High near 39. South southeast wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

80% chance of rain & snow Saturday Night Saturday Night... Rain before 3am, then a chance of rain and snow. Low around 27. South southeast wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 34. West northwest wind 11 to 15 mph, with gusts as high as 22 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 20. North wind 6 to 10 mph.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 31. North northeast wind around 6 mph.

10% chance of snow Monday Night Monday Night... A slight chance of snow. Mostly cloudy, with a low around 20. Light north northeast wind.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 33. Calm wind becoming northwest 5 to 7 mph in the morning.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 20. South southwest wind 3 to 5 mph.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 41. South wind 5 to 8 mph.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:51 AM
Sunset: 4:39 PM
Civil Sunrise:06:22 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 05:50 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:18 AM
Astro Sunset: 6:12 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.