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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 12:51 pm CST Jan 2, 2026 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on This Afternoon Mostly Cloudy on Tonight Mostly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday Rain on Thursday
High: 36°F Low: 29°F High: 41°F High: 40°F High: 54°F High: 61°F High: 61°F High: 63°F
Low: 25°F Low: 30°F Low: 44°F Low: 42°F Low: 48°F  
Cloudy Mostly Cloudy Mostly Sunny Mostly Sunny Sunny Mostly Sunny Partly Sunny Rain
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Current Conditions at
CARBONDALE - (KMDH)
36°
Mostly Cloudy
as of 1:52 PM CST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
8 MPH
010° North
Cloud Level(s): Broken at 1800ft
Current Conditions at
SPARTA - (KSAR)
32°
Cloudy
as of 2:15 PM CST
Rel. Humidity: 92%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: IFR
Wind Data
7 MPH
050° Northeast
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
MARION - (KMWA)
36°
Feels like 28°F
Mostly Cloudy
as of 1:45 PM CST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: MVFR
Wind Data
9 MPH
030° Northeast
Cloud Level(s): Broken at 1800ft
Current Conditions at
CAIRO - (KCIR)
37°
Partly Cloudy
as of 2:15 PM CST
Rel. Humidity: 80%
Dew Point: 32°F
Visibility: 7 Miles
Pressure: 29.87 in.
Flight Rule: VFR
Wind Data
8 MPH
040° Northeast
Cloud Level(s): Scattered at 1200ft
Cloudy on This Afternoon This Afternoon... Cloudy, with a high near 36. Northeast wind around 6 mph.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 29. Northeast wind 3 to 5 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 41. North northeast wind around 6 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 40. Light and variable wind.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 30. Calm wind becoming south around 6 mph after midnight.

Sunny on Monday Monday... Sunny, with a high near 54. South southwest wind 6 to 10 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 44. South southwest wind around 8 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 61. Southwest wind 5 to 9 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 42. Light and variable wind.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 61. Calm wind becoming south southeast around 5 mph.

20% chance of rain Wednesday Night Wednesday Night... A chance of showers. Mostly cloudy, with a low around 48. Calm wind becoming south southeast around 6 mph after midnight.

Rain on Thursday Thursday... Showers likely. Mostly cloudy, with a high near 63. South southwest wind 6 to 10 mph.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:14 AM
Sunset: 4:49 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:19 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.