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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: 6:12 pm CST Jan 11, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Clear on Tonight Sunny on Monday Mostly Sunny on Tuesday 20% chance of  on Wednesday Mostly Sunny on Thursday Partly Sunny on Friday Partly Sunny on Saturday Sunny on Sunday
Low: 24°F High: 48°F High: 57°F High: 46°F High: 33°F High: 43°F High: 35°F High: 32°F
Low: 33°F Low: 41°F Low: 19°F Low: 25°F Low: 26°F Low: 18°F  
Clear Sunny Mostly Sunny Partly Sunny Mostly Sunny Partly Sunny Partly Sunny Sunny
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Current Conditions at
MARION - (KMWA)
27°
Clear
as of 9:35 PM CST
Rel. Humidity: 68%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.50 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
25°
Clear
as of 8:52 PM CST
Rel. Humidity: 79%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.51 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
27°
Clear
as of 9:35 PM CST
Rel. Humidity: 73%
Dew Point: 19°F
Visibility: 10 Miles
Pressure: 30.52 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
28°
Clear
as of 9:35 PM CST
Rel. Humidity: 86%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.53 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Clear on Tonight Tonight... Clear, with a low around 24. Calm wind becoming south southwest around 5 mph after midnight.

Sunny on Monday Monday... Sunny, with a high near 48. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 33. South southwest wind 5 to 7 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 57. Southwest wind 7 to 13 mph, with gusts as high as 22 mph.

20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 41. West southwest wind 5 to 9 mph.

20% chance of  Wednesday Wednesday... A 20 percent chance of showers. Partly sunny, with a high near 46. Northwest wind 7 to 15 mph, with gusts as high as 28 mph.

Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 19. North northwest wind 11 to 15 mph, with gusts as high as 28 mph.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 33. North northwest wind 6 to 11 mph becoming light west in the afternoon. Winds could gust as high as 20 mph.

Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 25. Calm wind becoming south southwest around 6 mph after midnight.

Partly Sunny on Friday Friday... Partly sunny, with a high near 43. West southwest wind 6 to 10 mph, with gusts as high as 20 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 26. West wind 3 to 6 mph.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 35. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 18. Northwest wind 3 to 6 mph.

Sunny on Sunday Sunday... Sunny, with a high near 32. West wind 6 to 10 mph, with gusts as high as 18 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:11 AM
Sunset: 4:58 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:27 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:59 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:30 PM
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