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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 5:41 am CST Jan 1, 2026 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
New Year's Day Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Sunny on New Year's Day Mostly Cloudy on Tonight Mostly Cloudy on Friday Partly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday Mostly Cloudy on Tuesday Partly Sunny on Wednesday
High: 40°F Low: 30°F High: 42°F High: 41°F High: 43°F High: 55°F High: 61°F High: 58°F
  Low: 29°F Low: 25°F Low: 32°F Low: 41°F Low: 44°F  
Mostly Sunny Mostly Cloudy Mostly Cloudy Partly Sunny Mostly Sunny Sunny Mostly Cloudy Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
27°
Clear
as of 6:52 AM CST
Rel. Humidity: 100%
Dew Point: 27°F
Visibility: 7 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
30°
Clear
as of 7:35 AM CST
Rel. Humidity: 100%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
7 MPH
020° North
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
27°
Clear
as of 6:45 AM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
28°
Clear
as of 7:35 AM CST
Rel. Humidity: 100%
Dew Point: 28°F
Visibility: 5 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 40. North wind 3 to 6 mph.
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 30. Light north northeast wind.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 42. Calm wind becoming east northeast around 6 mph in the morning.
Cloudy on Friday Night Friday Night... Cloudy, with a low around 29. Northeast wind around 6 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 41. North northeast wind 5 to 7 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 25. Light north northwest wind.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 43. Calm wind becoming southeast around 5 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 32. South wind 3 to 8 mph.
Sunny on Monday Monday... Sunny, with a high near 55. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 41. South wind around 6 mph.
Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 61. South southwest wind 6 to 9 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 44. West southwest wind around 6 mph.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 58. West southwest wind 5 to 7 mph becoming south southeast in the afternoon.
Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:14 AM
Sunset: 4:48 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:18 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 5:51 PM
Astro Sunrise: 05:39 AM
Astro Sunset: 6:23 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.