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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: 9:56 pm CST Nov 23, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thanksgiving Day Friday Saturday Sunday
Fog on Tonight 70% chance of rain on Monday 30% chance of rain on Tuesday Sunny on Wednesday Sunny on Thanksgiving Day Mostly Sunny on Friday 20% chance of rain on Saturday Rain on Sunday
Low: 43°F High: 58°F High: 63°F High: 47°F High: 45°F High: 45°F High: 47°F High: 53°F
Low: 55 °F Low: 37°F Low: 29°F Low: 27°F Low: 32°F Low: 39°F  
Fog Rain Rain Sunny Sunny Mostly Sunny Rain Rain
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Current Conditions at
CARBONDALE - (KMDH)
46°
Clear
Fog
as of 10:28 PM CST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 1/4 Miles
Pressure: 30.18 in.
Flight Rule: IFR
Wind Data
5 MPH
190° South
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
45°
Cloudy
Fog
as of 10:35 PM CST
Rel. Humidity: 100%
Dew Point: 45°F
Visibility: 1/4 Miles
Pressure: 30.18 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 300ft
Current Conditions at
CAIRO - (KCIR)
46°
Cloudy
as of 10:35 PM CST
Rel. Humidity: 100%
Dew Point: 46°F
Visibility: 1/4 Miles
Pressure: 30.17 in.
Flight Rule: LIFR
Wind Data
5 MPH
040° Northeast
Cloud Level(s): Solid Overcast at 300ft
Fog on Tonight Tonight... Widespread dense fog, mainly after 11pm. Otherwise, mostly cloudy, with a low around 43. Calm wind.

70% chance of rain Monday Monday... Showers likely, mainly after 2pm. Widespread dense fog, mainly before 10am. Otherwise, cloudy, with a high near 58. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 70%.

100% chance of rain Monday Night Monday Night... Showers. Temperature rising to around 55 by 1am. South wind 3 to 5 mph. Chance of precipitation is 100%.

30% chance of rain Tuesday Tuesday... A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 63. West southwest wind 3 to 6 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 37. Light and variable wind becoming west northwest 5 to 10 mph in the evening.

Sunny on Wednesday Wednesday... Sunny, with a high near 47. West northwest wind 8 to 14 mph, with gusts as high as 22 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 29. West northwest wind 3 to 6 mph.

Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 45. West northwest wind 3 to 6 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 27. Calm wind.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 45. Calm wind becoming southeast around 5 mph.

20% chance of rain Friday Night Friday Night... A chance of showers. Mostly cloudy, with a low around 32. Calm wind becoming southeast around 5 mph after midnight.

20% chance of rain Saturday Saturday... A chance of showers. Mostly cloudy, with a high near 47. South southeast wind 6 to 8 mph.

Rain on Saturday Night Saturday Night... Showers likely. Cloudy, with a low around 39. South southeast wind around 7 mph.

Rain on Sunday Sunday... Showers likely. Mostly cloudy, with a high near 53. South southeast wind 7 to 9 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 06:45 AM
Sunset: 4:41 PM
Civil Sunrise:06:16 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 05:44 AM
Nautical Sunset: 5:41 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 6:13 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.