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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 10:21 am CST Nov 26, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thanksgiving Day Friday Saturday Sunday Monday Tuesday
Sunny on Today Increasing Clouds on Tonight Sunny on Thanksgiving Day Sunny on Friday 80% chance of rain & snow on Saturday 20% chance of rain on Sunday 20% chance of rain & snow on Monday 10% chance of on Tuesday
High: 44°F Low: 31°F High: 42°F High: 40°F High: 41°F High: 40°F High: 33°F High: 36°F
Low: 22°F Low: 28°F Low: 32°F Low: 21°F Low: 20°F  
Sunny Increasing Clouds Sunny Sunny Rain & Snow Rain Rain & Snow Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
41°
Feels like 33°F
Partly Cloudy
as of 9:52 AM CST
Rel. Humidity: 48%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 30 MPH
300° Northwest
Cloud Level(s): Scattered at 4400ft
Current Conditions at
SPARTA - (KSAR)
39°
Feels like 31°F
Cloudy
as of 10:15 AM CST
Rel. Humidity: 51%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 26 MPH
280° West
Cloud Level(s): Solid Overcast at 4600ft
Current Conditions at
MARION - (KMWA)
41°
Feels like 32°F
Mostly Cloudy
as of 9:45 AM CST
Rel. Humidity: 56%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
18 MPH
Gust: 28 MPH
290° West
Cloud Level(s): Broken at 3400ft
Current Conditions at
CAIRO - (KCIR)
45°
Feels like 38°F
Clear
as of 10:15 AM CST
Rel. Humidity: 52%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 22 MPH
310° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 44. West northwest wind 11 to 17 mph, with gusts as high as 31 mph.
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 31. West northwest wind 7 to 10 mph, with gusts as high as 18 mph.
Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 42. West northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 22. West northwest wind around 5 mph becoming calm in the evening.
Sunny on Friday Friday... Sunny, with a high near 40. Light and variable wind.
30% chance of snow Friday Night Friday Night... A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Calm wind becoming southeast 5 to 7 mph after midnight.
80% chance of rain & snow Saturday Saturday... Rain, possibly mixed with snow showers. High near 41. Southeast wind 8 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Rain on Saturday Night Saturday Night... Showers, mainly before midnight. Cloudy, with a low around 32. South wind 9 to 11 mph becoming west after midnight. Winds could gust as high as 18 mph.
20% chance of rain Sunday Sunday... A chance of showers. Mostly cloudy, with a high near 40. North northwest wind around 10 mph.
20% chance of snow Sunday Night Sunday Night... A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 21. North wind 6 to 8 mph.
20% chance of rain & snow Monday Monday... A chance of rain and snow showers. Mostly cloudy, with a high near 33. North wind around 7 mph.
20% chance of snow Monday Night Monday Night... A chance of snow showers. Mostly cloudy, with a low around 20. North wind 3 to 6 mph.
10% chance of Tuesday Tuesday... A slight chance of showers. Partly sunny, with a high near 36. Northwest wind 6 to 8 mph.
Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:50 AM
Sunset: 4:39 PM
Civil Sunrise:06:21 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 05:49 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:17 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.