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Mount Pleasant, Illinois Weather Forecast
Mount Pleasant, Illinois Weather
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Click for Hazardous Weather Outlook for Mount Pleasant, Illinois
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Weather Forecast for Mount Pleasant, Illinois : Union County
Issued: 5:41 am CST Dec 30, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday New Year's Day Friday Saturday Sunday Monday
Increasing Clouds on Today Mostly Clear on Tonight Increasing Clouds on Wednesday Mostly Sunny on New Year's Day 20% chance of rain on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday Sunny on Monday
High: 35°F Low: 26°F High: 43°F High: 43°F High: 49°F High: 44°F High: 49°F High: 51°F
Low: 27°F Low: 32°F Low: 30°F Low: 28°F Low: 35°F  
Increasing Clouds Mostly Clear Increasing Clouds Mostly Sunny Rain Mostly Sunny Mostly Sunny Sunny
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Current Conditions at
MARION - (KMWA)
18°
Clear
as of 5:35 AM CST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
19°
Clear
as of 4:52 AM CST
Rel. Humidity: 73%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
5 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
21°
Clear
as of 5:35 AM CST
Rel. Humidity: 67%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.39 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
21°
Clear
as of 5:35 AM CST
Rel. Humidity: 79%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
5 MPH
320° Northwest
Cloud Level(s): Clear
Increasing Clouds on Today Today... Increasing clouds, with a high near 35. Northwest wind 5 to 7 mph becoming southwest in the afternoon.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 26. Southwest wind around 6 mph.
Increasing Clouds on Wednesday Wednesday... Increasing clouds, with a high near 43. West wind 3 to 6 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 27. Calm wind.
Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 43. Light north northeast wind.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 32. Calm wind.
20% chance of rain Friday Friday... A 20 percent chance of showers after noon. Cloudy, with a high near 49. Calm wind becoming east southeast around 5 mph.
10% chance of rain Friday Night Friday Night... A slight chance of showers before midnight. Mostly cloudy, with a low around 30. Calm wind becoming north northeast around 5 mph after midnight.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 44. North wind 3 to 6 mph.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 28. Calm wind.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 49. Calm wind becoming south around 5 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 35. Light and variable wind.
Sunny on Monday Monday... Sunny, with a high near 51. West northwest wind 3 to 7 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:11 AM
Sunset: 4:48 PM
Civil Sunrise:06:41 AM
Civil Sunset: 5:17 PM
Nautical Sunrise: 06:09 AM
Nautical Sunset: 5:49 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:21 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.