Denny, Illinois Weather
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Weather Forecast for Denny, Illinois : Perry County
Issued: 5:31 am CDT Sep 16, 2025 Latitude: 38.0475507 Longitude: -89.3270302 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Morning Fog on Today Mostly Clear on Tonight Sunny on Wednesday Sunny on Thursday 30% chance of thunderstorms on Friday 20% chance of thunderstorms on Saturday 20% chance of on Sunday 20% chance of thunderstorms on Monday
High: 94°F Low: 64°F High: 94°F High: 96°F High: 91°F High: 86°F High: 87°F High: 87°F
Low: 63°F Low: 65°F Low: 65°F Low: 64°F Low: 65°F  
Morning Fog Mostly Clear Sunny Sunny Thunderstorms Thunderstorms Partly Sunny Thunderstorms
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Current Conditions at
CARBONDALE - (KMDH)
63°
Clear
Mist
as of 7:06 AM CDST
Rel. Humidity: 100%
Dew Point: 63°F
Visibility: 2 1/2 Miles
Pressure: 30.13 in.
Flight Rule: IFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SPARTA - (KSAR)
68°
Clear
as of 7:15 AM CDST
Rel. Humidity: 88%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
64°
Clear
as of 6:45 AM CDST
Rel. Humidity: 93%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
64°
Clear
as of 7:15 AM CDST
Rel. Humidity: 100%
Dew Point: 64°F
Visibility: 5 Miles
Pressure: 30.13 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Clear
Morning Fog on Today Today... Patchy fog before 8am. Otherwise, sunny, with a high near 94. Calm wind becoming east around 6 mph in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 64. Light east northeast wind.
Sunny on Wednesday Wednesday... Sunny, with a high near 94. Calm wind becoming east northeast around 5 mph in the afternoon.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 63. Light southeast wind.
Sunny on Thursday Thursday... Sunny, with a high near 96. Calm wind becoming south southeast around 6 mph in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 65. South wind around 5 mph becoming calm in the evening.
30% chance of thunderstorms Friday Friday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
20% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening.
20% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 86. Calm wind becoming south southwest 5 to 7 mph in the morning.
10% chance of thunderstorms Saturday Night Saturday Night... A slight chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 64. Light south wind.
20% chance of Sunday Sunday... A chance of showers. Partly sunny, with a high near 87. Calm wind becoming south 5 to 9 mph in the morning.
20% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 6 mph.
20% chance of thunderstorms Monday Monday... A chance of showers and thunderstorms. Partly sunny, with a high near 87. South wind 5 to 9 mph.
Current Radar Image


Sun Almanac for Denny, Illinois
Sunrise: 06:40 AM
Sunset: 7:04 PM
Civil Sunrise:06:14 AM
Civil Sunset: 7:30 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 8:01 PM
Astro Sunrise: 05:11 AM
Astro Sunset: 8:32 PM
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