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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 4:41 pm CST Dec 3, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
20% chance of freezing rain & snow on Tonight Mostly Cloudy on Thursday Mostly Sunny on Friday Partly Sunny on Saturday 10% chance of on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday 10% chance of on Wednesday
Low: 22°F High: 32°F High: 40°F High: 44°F High: 38°F High: 34°F High: 45°F High: 51°F
Low: 18°F Low: 26°F Low: 28°F Low: 19°F Low: 24°F Low: 34°F  
Freezing Rain & Snow Mostly Cloudy Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
32°
Cloudy
as of 6:52 PM CST
Rel. Humidity: 80%
Dew Point: 27°F
Visibility: 8 Miles
Pressure: 30.18 in.
Flight Rule: MVFR
Wind Data
7 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 1300ft
Current Conditions at
SPARTA - (KSAR)
32°
Cloudy
as of 6:55 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
5 MPH
160° South
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
MARION - (KMWA)
30°
Partly Cloudy
as of 6:45 PM CST
Rel. Humidity: 86%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
3 MPH
210° Southwest
Cloud Level(s): Scattered at 5000ft
Current Conditions at
CAIRO - (KCIR)
32°
Cloudy
as of 6:55 PM CST
Rel. Humidity: 86%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1200ft
20% chance of freezing rain & snow Tonight Tonight... A slight chance of freezing rain before 1am, then a slight chance of snow showers between 1am and 5am. Cloudy, with a low around 22. Light and variable wind becoming north 6 to 11 mph after midnight. Chance of precipitation is 20%.
Mostly Cloudy on Thursday Thursday... Mostly cloudy, then gradually becoming sunny, with a steady temperature around 26. North wind 6 to 10 mph.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 18. Calm wind.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 40. Calm wind becoming south southwest around 6 mph in the afternoon.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 26. Light southwest wind.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 44. Calm wind becoming west southwest around 5 mph.
20% chance of freezing rain Saturday Night Saturday Night... A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 28. Calm wind becoming north northeast around 6 mph after midnight. Chance of precipitation is 20%.
10% chance of Sunday Sunday... A slight chance of showers before noon. Partly sunny, with a high near 38. North wind 6 to 9 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 19. North wind 3 to 7 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 34. Light and variable wind becoming north northwest around 6 mph in the morning.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 24. South southwest wind 3 to 7 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 45. Southwest wind 7 to 11 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 34. South southwest wind 8 to 10 mph.
10% chance of Wednesday Wednesday... A slight chance of showers. Partly sunny, with a high near 51. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:57 AM
Sunset: 4:38 PM
Civil Sunrise:06:28 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 05:55 AM
Nautical Sunset: 5:39 PM
Astro Sunrise: 05:23 AM
Astro Sunset: 6:11 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.