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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 18, 2025 Latitude: 39.451702 Longitude: -87.7978078 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Friday Saturday Sunday Monday Tuesday Wednesday
100% chance of thunderstorms on Today 30% chance of rain & snow on Tonight Mostly Cloudy on Friday Partly Sunny on Saturday Sunny on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday Mostly Cloudy on Wednesday
High: 52°F Low: 18°F High: 31°F High: 47°F High: 36°F High: 41°F High: 52°F High: 54°F
Low: 24°F Low: 23°F Low: 22°F Low: 34°F Low: 40°F  
Thunderstorms Rain & Snow Mostly Cloudy Partly Sunny Sunny Partly Sunny Mostly Cloudy Mostly Cloudy
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Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
45°
Feels like 36°F
Cloudy
Light Rain
as of 6:35 AM CST
Rel. Humidity: 87%
Dew Point: 41°F
Visibility: 7 Miles
Pressure: 29.71 in.
Flight Rule: VFR
Wind Data
21 MPH
170° South
Cloud Level(s): Scattered at 2000ft, Broken at 5000ft, Solid Overcast at 8000ft
Current Conditions at
MATTOON - (KMTO)
48°
Feels like 42°F
Cloudy
as of 5:53 AM CST
Rel. Humidity: 87%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 29.69 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 29 MPH
170° South
Cloud Level(s): Broken at 1900ft, Solid Overcast at 4200ft
Current Conditions at
TERRE HAUTE - (KHUF)
52°
Cloudy
as of 6:53 AM EST
Rel. Humidity: 71%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 25 MPH
170° South
Cloud Level(s): Few at 2400ft, Broken at 9000ft, Solid Overcast at 10000ft
Current Conditions at
MOUNT CARMEL MUNI - (KAJG)
52°
Clear
as of 6:35 AM CST
Rel. Humidity: 62%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 17 MPH
150° Southeast
100% chance of thunderstorms Today Today... Rain and possibly a thunderstorm before 4pm, then a chance of rain between 4pm and 5pm, then a slight chance of showers after 5pm. High near 52. Breezy, with a south southwest wind 21 to 26 mph becoming west 14 to 19 mph in the afternoon. Winds could gust as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

30% chance of rain & snow Tonight Tonight... A chance of rain and snow showers before 10pm, then a chance of snow showers between 10pm and 3am. Mostly cloudy, with a low around 18. Wind chill values between 4 and 14. Blustery, with a west northwest wind 10 to 15 mph increasing to 18 to 23 mph in the evening. Winds could gust as high as 36 mph. Chance of precipitation is 30%.

Mostly Cloudy on Friday Friday... Mostly cloudy, then gradually becoming sunny, with a high near 31. Wind chill values between 3 and 13. Blustery, with a west northwest wind 15 to 20 mph becoming south southwest 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 24. South wind 6 to 16 mph, with gusts as high as 26 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 47. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 28 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 23. Northwest wind 6 to 8 mph, with gusts as high as 16 mph.

Sunny on Sunday Sunday... Sunny, with a high near 36. Northwest wind 5 to 7 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 22.

Partly Sunny on Monday Monday... Partly sunny, with a high near 41.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 34.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 52.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 40.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 54.

Current Radar Image


Sun Almanac for Clarksville, Illinois
Sunrise: 07:06 AM
Sunset: 4:30 PM
Civil Sunrise:06:36 AM
Civil Sunset: 5:00 PM
Nautical Sunrise: 06:02 AM
Nautical Sunset: 5:34 PM
Astro Sunrise: 05:30 AM
Astro Sunset: 6:06 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.