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Mount Pleasant, Illinois Weather Forecast
Mount Pleasant, Illinois Weather
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Weather Forecast for Mount Pleasant, Illinois : Union County
Issued: 7:16 am CST Jan 26, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

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Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on Today Mostly Clear on Tonight Mostly Sunny on Tuesday Sunny on Wednesday Mostly Cloudy on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday
High: 14°F Low: 6 °F High: 30°F High: 27°F High: 23°F High: 18°F High: 20°F High: 26°F
Low: 0 °F Low: 5 °F Low: 4 °F Low: -2°F Low: 3 °F  
Sunny Mostly Clear Mostly Sunny Sunny Mostly Cloudy Mostly Sunny Mostly Sunny Partly Sunny
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Current Conditions at
MARION - (KMWA)
-0°
Feels like -17°F
Clear
as of 6:45 AM CST
Rel. Humidity: 70%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.46 in.
Flight Rule: VFR
Wind Data
12 MPH
300° Northwest
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
-0°
Clear
as of 6:52 AM CST
Rel. Humidity: 70%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.48 in.
Flight Rule: VFR
Wind Data
5 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
Clear
as of 7:35 AM CST
Rel. Humidity: 65%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.52 in.
Flight Rule: VFR
Wind Data
8 MPH
320° Northwest
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 14. Wind chill values as low as -13. North northwest wind 5 to 7 mph becoming light and variable in the afternoon.

Mostly Clear on Tonight Tonight... Mostly clear, with a temperature rising to around 6 by 5am. Wind chill values as low as -12. Calm wind becoming south southwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 30. Wind chill values as low as -8. Southwest wind 5 to 9 mph becoming light west in the afternoon. Winds could gust as high as 18 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 0. Calm wind.

Sunny on Wednesday Wednesday... Sunny, with a high near 27. Calm wind becoming west southwest around 6 mph in the afternoon.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 5. Light and variable wind.

Mostly Cloudy on Thursday Thursday... Mostly cloudy, with a high near 23. Calm wind becoming north around 5 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 4. Light north wind.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 18. North wind 3 to 7 mph.

Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around -2. North wind 3 to 6 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 20. North northwest wind 3 to 6 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 3. Calm wind.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 26. Calm wind becoming south southwest around 6 mph in the morning.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:04 AM
Sunset: 5:14 PM
Civil Sunrise:06:36 AM
Civil Sunset: 5:42 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 6:13 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:44 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.