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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 5:06 pm CST Jan 1, 2026 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Cloudy on Tonight Cloudy on Friday Mostly Cloudy on Saturday Mostly Sunny on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday Partly Sunny on Wednesday 20% chance of rain on Thursday
Low: 29°F High: 40°F High: 41°F High: 42°F High: 56°F High: 62°F High: 58°F High: 60°F
Low: 29°F Low: 25°F Low: 33°F Low: 44°F Low: 40°F Low: 44°F  
Mostly Cloudy Cloudy Mostly Cloudy Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny Rain
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Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 5:52 PM CST
Rel. Humidity: 86%
Dew Point: 34°F
Visibility: 8 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
6 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
34°
Cloudy
as of 6:15 PM CST
Rel. Humidity: 100%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.93 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 700ft
Current Conditions at
MARION - (KMWA)
36°
Clear
as of 5:45 PM CST
Rel. Humidity: 86%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
7 MPH
010° North
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
45°
Clear
as of 6:15 PM CST
Rel. Humidity: 70%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 29. Calm wind.

Cloudy on Friday Friday... Cloudy, with a high near 40. Calm wind becoming east northeast 5 to 7 mph in the morning.

Cloudy on Friday Night Friday Night... Cloudy, with a low around 29. Northeast wind around 6 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, then gradually becoming 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 42. Light and variable wind.

Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 33. Calm wind becoming south 5 to 7 mph in the evening.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 56. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 44. South wind 6 to 9 mph.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 62. Southwest wind 7 to 11 mph, with gusts as high as 18 mph.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 40. South southwest wind around 6 mph becoming light and variable after midnight.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 58. Southwest wind around 6 mph becoming calm in the afternoon.

10% chance of rain Wednesday Night Wednesday Night... A slight chance of showers. Mostly cloudy, with a low around 44. Calm wind becoming south southeast around 6 mph after midnight.

20% chance of rain Thursday Thursday... A chance of showers. Mostly cloudy, with a high near 60. South southeast wind 6 to 9 mph.

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
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