Mount Pleasant, Illinois Weather
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Weather Forecast for Mount Pleasant, Illinois : Union County
Issued: 6:17 pm CDT Oct 21, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Clear on Tonight Sunny on Wednesday Sunny on Thursday 30% chance of on Friday 20% chance of rain on Saturday 20% chance of rain on Sunday 20% chance of on Monday 20% chance of on Tuesday
Low: 42°F High: 66°F High: 66°F High: 63°F High: 65°F High: 67°F High: 70°F High: 67°F
Low: 41°F Low: 39°F Low: 49°F Low: 52°F Low: 51°F Low: 53°F  
Clear Sunny Sunny Partly Sunny Rain Rain Partly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
57°
Clear
as of 7:52 PM CDST
Rel. Humidity: 38%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
7 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
59°
Clear
as of 8:15 PM CDST
Rel. Humidity: 33%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
59°
Clear
as of 8:15 PM CDST
Rel. Humidity: 41%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
7 MPH
280° West
Cloud Level(s): Clear
Clear on Tonight Tonight... Clear, with a low around 42. West wind 5 to 7 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 66. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Clear on Wednesday Night Wednesday Night... Clear, with a low around 41. Calm wind.
Sunny on Thursday Thursday... Sunny, with a high near 66. Calm wind becoming north around 6 mph in the afternoon.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 39. Calm wind.
30% chance of Friday Friday... A 30 percent chance of showers, mainly after 1pm. Partly sunny, with a high near 63. Calm wind becoming east southeast around 5 mph in the afternoon.
40% chance of rain Friday Night Friday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 49. Light east wind.
20% chance of rain Saturday Saturday... A chance of showers. Mostly cloudy, with a high near 65. East southeast wind 5 to 7 mph.
20% chance of rain Saturday Night Saturday Night... A chance of showers. Mostly cloudy, with a low around 52. Southeast wind around 6 mph.
20% chance of rain Sunday Sunday... A chance of showers before 1pm. Mostly cloudy, with a high near 67. East southeast wind 6 to 8 mph.
10% chance of rain Sunday Night Sunday Night... A slight chance of showers. Mostly cloudy, with a low around 51. East southeast wind around 6 mph.
20% chance of Monday Monday... A chance of showers. Partly sunny, with a high near 70. Southeast wind 6 to 9 mph.
20% chance of thunderstorms Monday Night Monday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Southeast wind around 7 mph.
20% chance of Tuesday Tuesday... A chance of showers. Partly sunny, with a high near 67. South wind 7 to 10 mph becoming west in the morning. Winds could gust as high as 18 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:11 AM
Sunset: 6:11 PM
Civil Sunrise:06:44 AM
Civil Sunset: 6:38 PM
Nautical Sunrise: 06:14 AM
Nautical Sunset: 7:08 PM
Astro Sunrise: 05:43 AM
Astro Sunset: 7:38 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.