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Clarksville, Illinois Weather Forecast
Clarksville, Illinois Weather
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Weather Forecast for Clarksville, Illinois : Clark County
Issued: 6:36 am CST Dec 5, 2025 Latitude: 39.451702 Longitude: -87.7978078 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Morning Fog on Today Increasing Clouds on Tonight Mostly Cloudy on Saturday 50% chance of snow on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday 20% chance of rain on Wednesday Mostly Cloudy on Thursday
High: 30°F Low: 23°F High: 34°F High: 34°F High: 26°F High: 37°F High: 41°F High: 28°F
Low: 23°F Low: 10°F Low: 15°F Low: 30°F Low: 17°F  
Morning Fog Increasing Clouds Mostly Cloudy Snow Mostly Sunny Partly Sunny Rain Mostly Cloudy
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Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
Clear
as of 7:35 AM CST
Rel. Humidity: 84%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
Clear
as of 6:53 AM CST
Rel. Humidity: 92%
Dew Point: 7°F
Visibility: 9 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
6 MPH
200° South
Cloud Level(s): Clear
Current Conditions at
MOUNT CARMEL MUNI - (KAJG)
21°
Cloudy
as of 7:35 AM CST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 7 Miles
Pressure: 30.12 in.
Flight Rule: MVFR
Wind Data
3 MPH
290° West
Cloud Level(s): Solid Overcast at 2100ft
Morning Fog on Today Today... Patchy freezing fog before 9am. Sunny, with a high near 30. Wind chill values between 2 and 12. South wind 5 to 8 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 23. South wind 7 to 10 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 34. West southwest wind 5 to 7 mph becoming calm in the afternoon.

30% chance of snow Saturday Night Saturday Night... A 30 percent chance of snow after midnight. Cloudy, with a low around 23. Calm wind becoming east southeast around 6 mph after midnight.

50% chance of snow Sunday Sunday... A 50 percent chance of snow before noon. Mostly cloudy, with a high near 34. East southeast wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 10. North wind 5 to 10 mph, with gusts as high as 17 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 26. North northeast wind around 5 mph becoming calm in the morning.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 15.

Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 37.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30.

20% chance of rain Wednesday Wednesday... A chance of rain. Mostly cloudy, with a high near 41.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 17.

Mostly Cloudy on Thursday Thursday... Mostly cloudy, with a high near 28.

Current Radar Image


Sun Almanac for Clarksville, Illinois
Sunrise: 06:57 AM
Sunset: 4:27 PM
Civil Sunrise:06:27 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 05:53 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 6:03 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.