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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 11:21 pm CST Nov 27, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Overnight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Clear on Overnight Sunny on Friday 100% chance of snow & sleet on Saturday Mostly Cloudy on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday Mostly Sunny on Wednesday Mostly Cloudy on Thursday
Low: 27°F High: 40°F High: 40°F High: 32°F High: 31°F High: 32°F High: 39°F High: 39°F
Low: 33°F Low: 27°F Low: 19°F Low: 22°F Low: 20°F Low: 25°F  
Mostly Clear Sunny Snow & Sleet Mostly Cloudy Mostly Cloudy Partly Sunny Mostly Sunny Mostly Cloudy
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Current Conditions at
CARBONDALE - (KMDH)
27°
Clear
as of 12:52 AM CST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.40 in.
Flight Rule: VFR
Wind Data
5 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
28°
Partly Cloudy
as of 1:35 AM CST
Rel. Humidity: 74%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.45 in.
Flight Rule: VFR
Wind Data
8 MPH
0° North
Cloud Level(s): Scattered at 6500ft
Current Conditions at
CAIRO - (KCIR)
32°
Partly Cloudy
as of 1:35 AM CST
Rel. Humidity: 80%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.44 in.
Flight Rule: VFR
Wind Data
5 MPH
290° West
Cloud Level(s): Scattered at 6000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a steady temperature around 27. Northwest wind around 6 mph.

Sunny on Friday Friday... Sunny, with a high near 40. North northwest wind around 5 mph becoming calm in the afternoon.

60% chance of snow Friday Night Friday Night... Snow likely, mainly after 5am. Mostly cloudy, with a steady temperature around 33. Calm wind becoming southeast 5 to 7 mph after midnight. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

100% chance of snow & sleet Saturday Saturday... Snow, possibly mixed with rain and sleet before noon, then rain and snow between noon and 3pm, then rain after 3pm. High near 40. Southeast wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

80% chance of rain & snow Saturday Night Saturday Night... Rain before 3am, then a slight chance of rain and snow. Low around 27. South wind 11 to 14 mph becoming west northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 32. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 19. North wind 5 to 8 mph.

Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 31. Northeast wind around 6 mph.

20% chance of snow Monday Night Monday Night... A chance of snow. Mostly cloudy, with a low around 22. Light north northeast wind.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 32. Northwest wind 3 to 6 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 20. Light and variable wind.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 39. South wind 3 to 7 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 25. South wind around 5 mph becoming light and variable.

Mostly Cloudy on Thursday Thursday... Mostly cloudy, with a high near 39. Northwest wind 5 to 7 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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