Clarksville, Illinois Weather
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Weather Forecast for Clarksville, Illinois : Clark County
Issued: 8:56 pm CDT Sep 18, 2025 Latitude: 39.451702 Longitude: -87.7978078 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Clear on Tonight Increasing Clouds on Friday Mostly Sunny on Saturday 40% chance of thunderstorms on Sunday 50% chance of thunderstorms on Monday 30% chance of rain on Tuesday 20% chance of on Wednesday 20% chance of on Thursday
Low: 60°F High: 90°F High: 87°F High: 84°F High: 83°F High: 80°F High: 78°F High: 78°F
Low: 63°F Low: 63°F Low: 63°F Low: 63°F Low: 61°F Low: 60°F  
Mostly Clear Increasing Clouds Mostly Sunny Thunderstorms Thunderstorms Rain Partly Sunny Partly Sunny
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Current Conditions at
EDGAR COUNTY ARPT - (KPRG)
68°
Clear
as of 8:55 PM CDST
Rel. Humidity: 60%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
3 MPH
120° Southeast
Cloud Level(s): Clear
Current Conditions at
MATTOON - (KMTO)
73°
Clear
as of 8:53 PM CDST
Rel. Humidity: 53%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
140° Southeast
Cloud Level(s): Clear
Current Conditions at
TERRE HAUTE - (KHUF)
66°
Clear
as of 9:53 PM EDST
Rel. Humidity: 82%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
3 MPH
090° East
Cloud Level(s): Clear
Current Conditions at
MOUNT CARMEL MUNI - (KAJG)
72°
Clear
as of 8:55 PM CDST
Rel. Humidity: 64%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 60. East southeast wind around 5 mph becoming calm in the evening.
Increasing Clouds on Friday Friday... Increasing clouds, with a high near 90. Light and variable wind becoming south 5 to 8 mph in the morning.
20% chance of thunderstorms Friday Night Friday Night... A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. Southeast wind around 6 mph becoming calm in the evening.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 87. Light and variable wind becoming south southeast around 6 mph in the morning.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 63. Light south southeast wind.
40% chance of thunderstorms Sunday Sunday... A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%.
60% chance of thunderstorms Sunday Night Sunday Night... A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. South wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
50% chance of thunderstorms Monday Monday... A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
50% chance of thunderstorms Monday Night Monday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
30% chance of rain Tuesday Tuesday... A 30 percent chance of showers after 1pm. Mostly cloudy, with a high near 80.
20% chance of rain Tuesday Night Tuesday Night... A chance of showers. Mostly cloudy, with a low around 61.
20% chance of Wednesday Wednesday... A chance of showers. Partly sunny, with a high near 78.
20% chance of rain Wednesday Night Wednesday Night... A chance of showers. Mostly cloudy, with a low around 60.
20% chance of Thursday Thursday... A chance of showers. Partly sunny, with a high near 78.
Current Radar Image


Sun Almanac for Clarksville, Illinois
Sunrise: 06:36 AM
Sunset: 6:55 PM
Civil Sunrise:06:09 AM
Civil Sunset: 7:21 PM
Nautical Sunrise: 05:37 AM
Nautical Sunset: 7:53 PM
Astro Sunrise: 05:05 AM
Astro Sunset: 8:25 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.