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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 1:56 pm CST Nov 28, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Sunny on This Afternoon 60% chance of snow on Tonight 100% chance of rain & snow on Saturday Mostly Cloudy on Sunday 20% chance of snow on Monday Partly Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday
High: 39°F Low: 32°F High: 41°F High: 32°F High: 33°F High: 32°F High: 40°F High: 35°F
Low: 26°F Low: 21°F Low: 22°F Low: 18°F Low: 22°F  
Mostly Sunny Snow Rain & Snow Mostly Cloudy Snow Partly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 1:52 PM CST
Rel. Humidity: 44%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
36°
Partly Cloudy
as of 2:15 PM CST
Rel. Humidity: 47%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 12000ft
Current Conditions at
MARION - (KMWA)
37°
Clear
as of 1:45 PM CST
Rel. Humidity: 44%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
41°
Partly Cloudy
as of 2:15 PM CST
Rel. Humidity: 48%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
5 MPH
120° Southeast
Cloud Level(s): Scattered at 11000ft
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 39. Calm wind.

60% chance of snow Tonight Tonight... Snow showers likely, mainly after 5am. Mostly cloudy, with a steady temperature around 32. Calm wind becoming southeast 5 to 8 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

100% chance of rain & snow Saturday Saturday... Snow showers before 11am, then rain and snow showers between 11am and noon, then rain showers after noon. High near 41. Southeast wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

80% chance of rain Saturday Night Saturday Night... Showers, mainly before 9pm. Low around 26. South wind 15 to 18 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 32. West northwest wind 10 to 16 mph, with gusts as high as 24 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 21. North northwest wind 5 to 8 mph becoming light and variable after midnight.

20% chance of snow Monday Monday... A 20 percent chance of snow showers after noon. Mostly cloudy, with a high near 33. Northeast wind 3 to 6 mph.

Snow on Monday Night Monday Night... Snow showers likely, mainly before midnight. Cloudy, with a low around 22. Light and variable wind.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 32. North northwest wind 3 to 7 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 18. Light and variable wind.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 40. South wind 3 to 8 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 22. South southwest wind around 5 mph becoming light and variable.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 35. Northwest wind around 6 mph.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:52 AM
Sunset: 4:39 PM
Civil Sunrise:06:23 AM
Civil Sunset: 5:08 PM
Nautical Sunrise: 05:51 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:19 AM
Astro Sunset: 6:12 PM
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