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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: 9:17 pm CST Jan 10, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
20% chance of rain on Tonight Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday 10% chance of on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday Partly Sunny on Saturday
Low: 28°F High: 40°F High: 48°F High: 57°F High: 46°F High: 37°F High: 44°F High: 37°F
Low: 26°F Low: 34°F Low: 40°F Low: 20°F Low: 28°F Low: 24°F  
Rain Sunny Sunny Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
MARION - (KMWA)
39°
Clear
as of 8:55 PM CST
Rel. Humidity: 48%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
37°
Clear
as of 8:52 PM CST
Rel. Humidity: 51%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
37°
Clear
as of 8:55 PM CST
Rel. Humidity: 64%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
43°
Clear
as of 8:55 PM CST
Rel. Humidity: 56%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
6 MPH
230° Southwest
Cloud Level(s): Clear
20% chance of rain Tonight Tonight... A slight chance of showers or sprinkles before midnight, then a slight chance of sprinkles between midnight and 1am. Clear early, then becoming mostly cloudy, with a low around 28. West southwest wind 6 to 11 mph becoming northwest 12 to 17 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Sunny on Sunday Sunday... Sunny, with a high near 40. Northwest wind 6 to 11 mph becoming light in the afternoon. Winds could gust as high as 28 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 26. Light and variable wind.
Sunny on Monday Monday... Sunny, with a high near 48. South southwest wind 5 to 10 mph, with gusts as high as 18 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 34. South southwest wind around 6 mph.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 57. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 40. West southwest wind 5 to 9 mph.
10% chance of Wednesday Wednesday... A slight chance of showers. Partly sunny, with a high near 46. West wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 20. North northwest wind 6 to 8 mph.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 37. North northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 28. South southwest wind 3 to 6 mph.
Partly Sunny on Friday Friday... Partly sunny, with a high near 44. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 24. West wind around 6 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 37. West northwest wind 6 to 10 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:11 AM
Sunset: 4:57 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:26 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:30 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.