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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: 4:06 am CST Jan 25, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on Today Clearing on Tonight Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday Partly Sunny on Friday Mostly Sunny on Saturday
High: 14°F Low: -3°F High: 15°F High: 29°F High: 24°F High: 21°F High: 23°F High: 20°F
Low: 2 °F Low: 2 °F Low: 3 °F Low: 6 °F Low: 3 °F  
Snow Clearing Sunny Sunny Mostly Sunny Partly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
MARION - (KMWA)
10°
Feels like -5°F
Cloudy
Light Snow
as of 6:45 AM CST
Rel. Humidity: 84%
Dew Point: 7°F
Visibility: 2 Miles
Pressure: 30.00 in.
Flight Rule: IFR
Wind Data
14 MPH
340° North
Cloud Level(s): Broken at 1000ft, Solid Overcast at 1900ft
Current Conditions at
CARBONDALE - (KMDH)
10°
Feels like -6°F
Cloudy
Mist
as of 7:37 AM CST
Rel. Humidity: 84%
Dew Point: 7°F
Visibility: 2 Miles
Pressure: 30.05 in.
Flight Rule: IFR
Wind Data
15 MPH
340° North
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
CAIRO - (KCIR)
14°
Feels like -2°F
Cloudy
as of 7:35 AM CST
Rel. Humidity: 78%
Dew Point: 9°F
Visibility: 7 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
17 MPH
350° North
Cloud Level(s): Solid Overcast at 3200ft
100% chance of snow Today Today... Snow, mainly before 3pm. The snow could be heavy at times. High near 14. Wind chill values as low as -3. North wind 13 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 2 to 4 inches possible.

Clearing on Tonight Tonight... Cloudy during the early evening, then gradual clearing, with a low around -3. Wind chill values as low as -17. North northwest wind 8 to 13 mph, with gusts as high as 25 mph.

Sunny on Monday Monday... Sunny, with a high near 15. Wind chill values as low as -15. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 2. Wind chill values as low as -8. Calm wind becoming south southwest 5 to 9 mph in the evening.

Sunny on Tuesday Tuesday... Sunny, with a high near 29. Southwest wind 5 to 9 mph becoming light west in the afternoon.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 2. Calm wind.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 24. Calm wind becoming west around 5 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 3. Light and variable wind.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 21. Calm wind becoming north northwest around 6 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 6. Light north northeast wind.

Partly Sunny on Friday Friday... Partly sunny, with a high near 23. North wind 3 to 6 mph.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 3. Light north wind.

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

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:05 AM
Sunset: 5:13 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:41 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 6:12 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:43 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.