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Clarksville, Illinois Weather Forecast
Clarksville, Illinois Weather
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Weather Forecast for Clarksville, Illinois : Clark County
Issued: 5:36 pm CST Dec 4, 2025 Latitude: 39.451702 Longitude: -87.7978078 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Fog on Tonight Morning Fog on Friday Mostly Cloudy on Saturday 40% chance of snow on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday 20% chance of rain on Wednesday Partly Sunny on Thursday
Low: 9 °F High: 31°F High: 33°F High: 33°F High: 27°F High: 37°F High: 39°F High: 28°F
Low: 23°F Low: 23°F Low: 12°F Low: 16°F Low: 26°F Low: 18°F  
Fog Morning Fog Mostly Cloudy Snow Mostly Sunny Partly Sunny Rain Partly Sunny
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Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
16°
Clear
as of 5:35 PM CST
Rel. Humidity: 72%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.30 in.
Flight Rule: VFR
Wind Data
3 MPH
010° North
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
12°
Clear
as of 4:53 PM CST
Rel. Humidity: 78%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.28 in.
Flight Rule: VFR
Wind Data
8 MPH
0° North
Cloud Level(s): Clear
Current Conditions at
MOUNT CARMEL MUNI - (KAJG)
28°
Mostly Cloudy
as of 5:35 PM CST
Rel. Humidity: 74%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.29 in.
Flight Rule: MVFR
Wind Data
5 MPH
350° North
Cloud Level(s): Broken at 3000ft
Fog on Tonight Tonight... Patchy freezing fog after 9pm. Partly cloudy, with a low around 9. North northeast wind around 5 mph becoming calm in the evening.

Morning Fog on Friday Friday... Patchy freezing fog before 9am. Mostly sunny, with a high near 31. Calm wind becoming south southwest 5 to 8 mph in the morning.

Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around 23. Southwest wind 6 to 8 mph, with gusts as high as 15 mph.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 33. West southwest wind around 6 mph becoming calm in the afternoon.

Cloudy on Saturday Night Saturday Night... Cloudy, with a low around 23. Calm wind becoming east northeast around 6 mph after midnight.

40% chance of snow Sunday Sunday... A 40 percent chance of snow before noon. Mostly cloudy, with a high near 33. East northeast wind 6 to 10 mph becoming north in the afternoon. Winds could gust as high as 16 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 12. North wind 6 to 9 mph, with gusts as high as 16 mph.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 27.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 16.

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 26.

20% chance of rain Wednesday Wednesday... A chance of rain. Mostly cloudy, with a high near 39.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 18.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 28.

Current Radar Image


Sun Almanac for Clarksville, Illinois
Sunrise: 06:56 AM
Sunset: 4:27 PM
Civil Sunrise:06:26 AM
Civil Sunset: 4:57 PM
Nautical Sunrise: 05:52 AM
Nautical Sunset: 5:31 PM
Astro Sunrise: 05:20 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.