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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: 3:16 pm CST Dec 9, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

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Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
20% chance of rain on Tonight Mostly Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday Partly Sunny on Saturday Sunny on Sunday 10% chance of rain on Monday 10% chance of on Tuesday
Low: 44 °F High: 46 °F High: 39°F High: 51°F High: 39°F High: 26°F High: 37°F High: 41°F
Low: 26°F Low: 34°F Low: 25°F Low: 14°F Low: 15°F Low: 26°F  
Rain Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Sunny Rain Partly Sunny
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Current Conditions at
MARION - (KMWA)
39°
Feels like 29°F
Mostly Cloudy
as of 4:45 PM CST
Rel. Humidity: 80%
Dew Point: 34°F
Pressure: 29.82 in.
Wind Data
22 MPH
Gust: 29 MPH
200° South
Cloud Level(s): Broken at 1400ft
Current Conditions at
CARBONDALE - (KMDH)
39°
Feels like 30°F
Clear
as of 4:52 PM CST
Rel. Humidity: 80%
Dew Point: 34°F
Visibility: 9 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 26 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
43°
Feels like 37°F
Clear
as of 5:15 PM CST
Rel. Humidity: 65%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.88 in.
Flight Rule: VFR
Wind Data
9 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
45°
Feels like 39°F
Clear
as of 5:15 PM CST
Rel. Humidity: 75%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.89 in.
Flight Rule: VFR
Wind Data
10 MPH
200° South
Cloud Level(s): Clear
20% chance of rain Tonight Tonight... A 20 percent chance of showers after 3am. Mostly cloudy, with a temperature rising to around 44 by 3am. South southwest wind 14 to 17 mph, with gusts as high as 33 mph.
Mostly Sunny on Wednesday Wednesday... Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 46 by 9am, then falling to around 39 during the remainder of the day. Breezy, with a west southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 36 mph.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 26. Northwest wind 5 to 7 mph becoming calm in the evening.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 39. Calm wind becoming southwest around 6 mph in the afternoon.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 34. South wind 3 to 6 mph.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 51. Southwest wind 6 to 8 mph becoming north northwest in the afternoon.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 25. North wind around 6 mph.
Partly Sunny on Saturday Saturday... Partly sunny, with a high near 39. North wind around 6 mph.
10% chance of rain & snow Saturday Night Saturday Night... A slight chance of rain and snow showers before midnight. Mostly cloudy, with a low around 14. North wind 6 to 8 mph.
Sunny on Sunday Sunday... Sunny, with a high near 26. North wind 5 to 8 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 15. Light and variable wind.
10% chance of rain Monday Monday... A slight chance of showers. Mostly sunny, with a high near 37. Calm wind becoming south around 6 mph in the morning.
10% chance of freezing rain Monday Night Monday Night... A slight chance of rain or freezing rain. Mostly cloudy, with a low around 26. Light south wind.
10% chance of Tuesday Tuesday... A slight chance of showers. Partly sunny, with a high near 41. South southeast wind 3 to 6 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:00 AM
Sunset: 4:38 PM
Civil Sunrise:06:30 AM
Civil Sunset: 5:07 PM
Nautical Sunrise: 05:58 AM
Nautical Sunset: 5:40 PM
Astro Sunrise: 05:26 AM
Astro Sunset: 6:12 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.