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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 10:11 pm CST Dec 10, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Cloudy on Tonight 20% chance of snow on Thursday Partly Sunny on Friday Mostly Cloudy on Saturday Sunny on Sunday Sunny on Monday Partly Sunny on Tuesday 10% chance of rain on Wednesday
Low: 31°F High: 40°F High: 43°F High: 32°F High: 20°F High: 37°F High: 43°F High: 50°F
Low: 35°F Low: 22°F Low: 7 °F Low: 10°F Low: 25°F Low: 35°F  
Mostly Cloudy Snow Partly Sunny Mostly Cloudy Sunny Sunny Partly Sunny Rain
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Current Conditions at
CARBONDALE - (KMDH)
30°
Partly Cloudy
as of 10:52 PM CST
Rel. Humidity: 74%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 7500ft
Current Conditions at
SPARTA - (KSAR)
28°
Clear
as of 10:55 PM CST
Rel. Humidity: 79%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
30°
Clear
as of 10:55 PM CST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a steady temperature around 31. Northwest wind 3 to 6 mph.

20% chance of snow Thursday Thursday... A 20 percent chance of snow showers after 1pm. Mostly cloudy, with a high near 40. Calm wind becoming southwest around 6 mph in the morning.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 35. South wind around 7 mph becoming west southwest after midnight.

Partly Sunny on Friday Friday... Partly sunny, with a high near 43. North northwest wind 6 to 11 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 22. North northwest wind 5 to 8 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 32. North wind 5 to 7 mph.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 7. North wind 7 to 10 mph.

Sunny on Sunday Sunday... Sunny, with a high near 20. North northwest wind 5 to 10 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 10. Light and variable wind.

Sunny on Monday Monday... Sunny, with a high near 37. South wind 5 to 10 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 25. South southwest wind around 6 mph.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 43. South wind 6 to 8 mph.

20% chance of rain Tuesday Night Tuesday Night... A chance of showers. Mostly cloudy, with a low around 35. South wind around 8 mph.

10% chance of rain Wednesday Wednesday... A slight chance of showers. Mostly cloudy, with a high near 50. South wind 8 to 10 mph.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:04 AM
Sunset: 4:38 PM
Civil Sunrise:06:34 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 06:01 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:29 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.