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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 8:06 pm CST Nov 22, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thanksgiving Day Friday Saturday
Cloudy on Tonight Morning Fog on Sunday 50% chance of rain on Monday 20% chance of rain on Tuesday Mostly Sunny on Wednesday Sunny on Thanksgiving Day Mostly Sunny on Friday 10% chance of on Saturday
Low: 41°F High: 60°F High: 58°F High: 65°F High: 48°F High: 46°F High: 47°F High: 50°F
Low: 41°F Low: 49°F Low: 37°F Low: 28°F Low: 26°F Low: 29°F  
Cloudy Morning Fog Rain Rain Mostly Sunny Sunny Mostly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
39°
Mostly Clear
Mist
as of 9:09 PM CST
Rel. Humidity: 100%
Dew Point: 39°F
Visibility: 4 Miles
Pressure: 30.16 in.
Flight Rule: MVFR
Wind Data
3 MPH
230° Southwest
Cloud Level(s): Few at 300ft
Current Conditions at
SPARTA - (KSAR)
48°
Clear
as of 8:55 PM CST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
5 MPH
260° West
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
45°
Mostly Cloudy
as of 8:55 PM CST
Rel. Humidity: 100%
Dew Point: 45°F
Visibility: 1 3/4 Miles
Pressure: 30.17 in.
Flight Rule: IFR
Wind Data
Calm
Cloudy on Tonight Tonight... Partly cloudy, with a low around 41. Light west wind.
Morning Fog on Sunday Sunday... Patchy fog before 7am. Otherwise, sunny, with a high near 60. Light and variable wind.
Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a low around 41. Light southeast wind.
50% chance of rain Monday Monday... A 50 percent chance of showers after noon. Cloudy, with a high near 58. South southeast wind 3 to 8 mph.
90% chance of rain Monday Night Monday Night... Showers. Low around 49. Southeast wind around 7 mph becoming south southwest after midnight. Chance of precipitation is 90%.
20% chance of rain Tuesday Tuesday... A 20 percent chance of showers after noon. Mostly cloudy, with a high near 65. Southwest wind 6 to 9 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 37. West northwest wind 6 to 10 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 48. West northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 28. West northwest wind around 6 mph.
Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 46. West northwest wind 5 to 8 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 26. Light west northwest wind.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 47. Light and variable wind becoming west 5 to 7 mph in the morning.
10% chance of rain Friday Night Friday Night... A slight chance of showers. Partly cloudy, with a low around 29. South southeast wind 3 to 5 mph.
10% chance of Saturday Saturday... A slight chance of showers. Partly sunny, with a high near 50. South southeast wind 5 to 9 mph.
Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:46 AM
Sunset: 4:41 PM
Civil Sunrise:06:18 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:14 AM
Astro Sunset: 6:13 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.