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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: 12:46 am CST Dec 17, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Overnight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
Cloudy on Overnight Mostly Cloudy on Wednesday 90% chance of thunderstorms on Thursday Sunny on Friday Mostly Sunny on Saturday Partly Sunny on Sunday Partly Sunny on Monday Mostly Cloudy on Tuesday
Low: 36°F High: 55°F High: 56°F High: 40°F High: 53°F High: 49°F High: 48°F High: 56°F
Low: 51 °F Low: 25°F Low: 31°F Low: 33°F Low: 33°F Low: 41°F  
Cloudy Mostly Cloudy Thunderstorms Sunny Mostly Sunny Partly Sunny Partly Sunny Mostly Cloudy
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Current Conditions at
MARION - (KMWA)
45°
Feels like 38°F
Clear
as of 1:55 AM CST
Rel. Humidity: 42%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 18 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
45°
Feels like 38°F
Clear
as of 1:52 AM CST
Rel. Humidity: 45%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
12 MPH
210° Southwest
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
46°
Cloudy
as of 1:55 AM CST
Rel. Humidity: 31%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Broken at 4800ft, Solid Overcast at 6500ft
Current Conditions at
CAIRO - (KCIR)
48°
Cloudy
as of 1:55 AM CST
Rel. Humidity: 42%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Broken at 4800ft, Broken at 5500ft, Solid Overcast at 6500ft
Cloudy on Overnight Overnight... Cloudy, with a low around 36. Southwest wind around 6 mph.

Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, then gradually becoming sunny, with a high near 55. South southwest wind 5 to 7 mph.

40% chance of thunderstorms Wednesday Night Wednesday Night... A 40 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a temperature rising to around 51 by 3am. South wind 6 to 14 mph, with gusts as high as 29 mph.

90% chance of thunderstorms Thursday Thursday... Showers and possibly a thunderstorm. High near 56. South wind 10 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%.

Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 25. West northwest wind 6 to 10 mph, with gusts as high as 20 mph.

Sunny on Friday Friday... Sunny, with a high near 40. West northwest wind around 6 mph becoming south southwest in the afternoon.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 31. South wind 5 to 11 mph, with gusts as high as 21 mph.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 53. South wind 9 to 15 mph, with gusts as high as 25 mph.

Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 33. Southwest wind around 7 mph becoming north after midnight.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 49. North northeast wind around 7 mph.

Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 33. North northeast wind around 5 mph becoming calm in the evening.

Partly Sunny on Monday Monday... Partly sunny, with a high near 48. East southeast wind 3 to 6 mph.

Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 41. Light and variable wind becoming south around 5 mph after midnight.

Mostly Cloudy on Tuesday Tuesday... Mostly cloudy, with a high near 56. Southwest wind 5 to 8 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:05 AM
Sunset: 4:40 PM
Civil Sunrise:06:36 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
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