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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: 3:51 pm CST Dec 16, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Mostly Cloudy on Tonight Sunny on Wednesday 100% chance of thunderstorms on Thursday Sunny on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Partly Sunny on Monday Partly Sunny on Tuesday
Low: 36°F High: 53°F High: 55°F High: 38°F High: 53°F High: 48°F High: 51°F High: 56°F
Low: 51 °F Low: 25°F Low: 32°F Low: 33°F Low: 33°F Low: 42°F  
Mostly Cloudy Sunny Thunderstorms Sunny Mostly Sunny Mostly Sunny Partly Sunny Partly Sunny
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Current Conditions at
MARION - (KMWA)
45°
Feels like 37°F
Cloudy
as of 4:45 PM CST
Rel. Humidity: 39%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
15 MPH
180° South
Cloud Level(s): Solid Overcast at 4800ft
Current Conditions at
CARBONDALE - (KMDH)
45°
Feels like 39°F
Cloudy
as of 4:52 PM CST
Rel. Humidity: 39%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
10 MPH
180° South
Cloud Level(s): Solid Overcast at 4900ft
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
46°
Cloudy
as of 5:15 PM CST
Rel. Humidity: 31%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 5000ft
Current Conditions at
CAIRO - (KCIR)
48°
Cloudy
as of 5:15 PM CST
Rel. Humidity: 36%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
7 MPH
180° South
Cloud Level(s): Solid Overcast at 6000ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 36. South southwest wind 5 to 9 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 53. South southwest wind 3 to 7 mph.
40% chance of rain Wednesday Night Wednesday Night... A 40 percent chance of showers after midnight. Increasing clouds, with a temperature rising to around 51 by 5am. South wind 6 to 14 mph, with gusts as high as 24 mph.
100% chance of thunderstorms Thursday Thursday... Showers and possibly a thunderstorm. High near 55. South wind 11 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 100%.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 25. West northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Sunny on Friday Friday... Sunny, with a high near 38. West northwest wind around 6 mph becoming south in the afternoon.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 32. South wind 5 to 10 mph, with gusts as high as 21 mph.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 53. South wind 7 to 14 mph, with gusts as high as 23 mph.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 33. Southwest wind around 6 mph becoming north after midnight.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 48. North northeast wind around 7 mph.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 33. East northeast wind 3 to 6 mph.
Partly Sunny on Monday Monday... Partly sunny, with a high near 51. Light and variable wind becoming southeast around 6 mph in the morning.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 42. South southwest wind 3 to 5 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 56. South southwest wind 5 to 7 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:05 AM
Sunset: 4:40 PM
Civil Sunrise:06:35 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:03 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:31 AM
Astro Sunset: 6:14 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.