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Denny, Illinois Weather Forecast
Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 3:16 pm CST Dec 24, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Christmas Day Friday Saturday Sunday Monday Tuesday
Cloudy on This Afternoon Morning Fog on Tonight Morning Fog on Christmas Day Mostly Sunny on Friday Partly Sunny on Saturday 20% chance of thunderstorms on Sunday Mostly Sunny on Monday Sunny on Tuesday
High: 65°F Low: 59°F High: 69°F High: 72°F High: 67°F High: 66°F High: 30°F High: 35°F
Low: 60°F Low: 48°F Low: 57°F Low: 22°F Low: 18°F  
Cloudy Morning Fog Morning Fog Mostly Sunny Partly Sunny Thunderstorms Mostly Sunny Sunny
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Current Conditions at
CARBONDALE - (KMDH)
64°
Clear
as of 2:52 PM CST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 8 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
8 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
64°
Clear
as of 3:15 PM CST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
12 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
73°
Partly Cloudy
as of 3:15 PM CST
Rel. Humidity: 73%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.14 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Scattered at 5000ft
Cloudy on This Afternoon This Afternoon... Cloudy, with a high near 65. South wind around 8 mph.

Morning Fog on Tonight Tonight... Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 59. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.

Morning Fog on Christmas Day Christmas Day... Patchy drizzle before 3pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 69. Southwest wind 5 to 7 mph becoming southeast in the afternoon.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 60. Light and variable wind becoming south southwest 5 to 9 mph in the evening.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 72. South southwest wind 5 to 11 mph becoming west in the afternoon.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 48. Light and variable wind.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 67. Calm wind becoming south 5 to 9 mph in the morning.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 57. South southwest wind around 9 mph.

20% chance of thunderstorms Sunday Sunday... A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Cloudy, with a high near 66. South southwest wind 8 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph.

20% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow showers before midnight. Mostly cloudy, with a low around 22. Northwest wind around 17 mph, with gusts as high as 25 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 30. Northwest wind 11 to 16 mph, with gusts as high as 25 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 18. Northwest wind 5 to 10 mph.

Sunny on Tuesday Tuesday... Sunny, with a high near 35. West northwest wind 5 to 8 mph becoming southwest in the afternoon.

Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 07:11 AM
Sunset: 4:43 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:12 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:45 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:18 PM
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