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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 10:36 am CST Jan 11, 2026 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
Sunny on Today Clear on Tonight Sunny on Monday Mostly Sunny on Tuesday 20% chance of  on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday Partly Sunny on Saturday
High: 39°F Low: 26°F High: 51°F High: 59°F High: 45°F High: 37°F High: 44°F High: 34°F
Low: 36°F Low: 40°F Low: 19°F Low: 27°F Low: 24°F  
Sunny Clear Sunny Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
SPARTA - (KSAR)
32°
Feels like 23°F
Partly Cloudy
as of 10:35 AM CST
Rel. Humidity: 54%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.54 in.
Flight Rule: VFR
Wind Data
10 MPH
Gust: 17 MPH
280° West
Cloud Level(s): Scattered at 2900ft
Current Conditions at
CAIRO - (KCIR)
34°
Feels like 25°F
Clear
as of 10:35 AM CST
Rel. Humidity: 55%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.54 in.
Flight Rule: VFR
Wind Data
12 MPH
300° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 39. Northwest wind 5 to 10 mph becoming light west northwest in the afternoon. Winds could gust as high as 20 mph.

Clear on Tonight Tonight... Clear, with a low around 26. Calm wind becoming south southwest around 6 mph after midnight.

Sunny on Monday Monday... Sunny, with a high near 51. Southwest wind 7 to 10 mph.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 36. South southwest wind 6 to 8 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 59. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 40. West wind 6 to 9 mph.

20% chance of  Wednesday Wednesday... A 20 percent chance of showers after noon. Partly sunny, with a high near 45. Northwest wind 8 to 16 mph, with gusts as high as 24 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 19. North northwest wind 8 to 13 mph, with gusts as high as 21 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 37. North northwest wind 5 to 8 mph becoming southwest in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 27. South southwest wind 5 to 9 mph.

Partly Sunny on Friday Friday... Partly sunny, with a high near 44. West wind 9 to 14 mph, with gusts as high as 21 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 24. West wind 6 to 8 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 34. West wind 8 to 11 mph, with gusts as high as 18 mph.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:13 AM
Sunset: 4:57 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:26 PM
Nautical Sunrise: 06:12 AM
Nautical Sunset: 5:59 PM
Astro Sunrise: 05:40 AM
Astro Sunset: 6:31 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.