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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: 4:51 am CST Dec 28, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday New Year's Day Friday Saturday
80% chance of thunderstorms on Today 60% chance of rain on Tonight Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Mostly Sunny on New Year's Day Partly Sunny on Friday 10% chance of rain on Saturday
High: 68°F Low: 22°F High: 31°F High: 34°F High: 45°F High: 45°F High: 45°F High: 52°F
Low: 19°F Low: 26°F Low: 27°F Low: 25°F Low: 35°F  
Thunderstorms Rain Sunny Sunny Mostly Sunny Mostly Sunny Partly Sunny Rain
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Current Conditions at
MARION - (KMWA)
66°
Cloudy
as of 5:15 AM CST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: MVFR
Wind Data
16 MPH
200° South
Cloud Level(s): Solid Overcast at 1800ft
Current Conditions at
CARBONDALE - (KMDH)
66°
Cloudy
as of 4:52 AM CST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 29 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 1900ft
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
66°
Cloudy
as of 5:15 AM CST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Scattered at 1500ft, Solid Overcast at 2200ft
Current Conditions at
CAIRO - (KCIR)
68°
Cloudy
as of 5:15 AM CST
Rel. Humidity: 88%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: MVFR
Wind Data
13 MPH
Gust: 18 MPH
190° South
Cloud Level(s): Scattered at 2100ft, Solid Overcast at 2600ft
80% chance of thunderstorms Today Today... A chance of showers before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 68. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.
60% chance of rain Tonight Tonight... Showers likely, mainly before 7pm. The rain could be heavy at times. Cloudy during the early evening, then gradual clearing, with a low around 22. Blustery, with a west northwest wind 17 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 60%.
Sunny on Monday Monday... Sunny, with a high near 31. West northwest wind 11 to 17 mph, with gusts as high as 30 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 19. Northwest wind 7 to 10 mph, with gusts as high as 21 mph.
Sunny on Tuesday Tuesday... Sunny, with a high near 34. Northwest wind around 6 mph becoming light and variable in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 26. Calm wind becoming west southwest around 5 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 45. West wind 3 to 7 mph.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 27. Calm wind becoming west around 5 mph after midnight.
Mostly Sunny on New Year's Day New Year's Day... Mostly sunny, with a high near 45. West northwest wind 5 to 7 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 25. Light north wind.
Partly Sunny on Friday Friday... Partly sunny, with a high near 45. Calm wind becoming south around 6 mph in the morning.
10% chance of rain Friday Night Friday Night... A slight chance of showers. Mostly cloudy, with a low around 35. South southeast wind 3 to 5 mph.
10% chance of rain Saturday Saturday... A slight chance of showers. Mostly cloudy, with a high near 52. South southwest wind 5 to 7 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:10 AM
Sunset: 4:46 PM
Civil Sunrise:06:41 AM
Civil Sunset: 5:15 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 5:48 PM
Astro Sunrise: 05:36 AM
Astro Sunset: 6:20 PM
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