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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: 3:16 pm CST Jan 19, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

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M.L.King Day Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Sunny on M.L.King Day Clear on Tonight Sunny on Tuesday 20% chance of rain & snow on Wednesday Mostly Sunny on Thursday 10% chance of snow on Friday 20% chance of snow on Saturday 10% chance of snow on Sunday
High: 25°F Low: 12°F High: 36°F High: 45°F High: 40°F High: 26°F High: 16°F High: 23°F
  Low: 27°F Low: 26°F Low: 17°F Low: 5 °F Low: 8 °F  
Mostly Sunny Clear Sunny Rain & Snow Mostly Sunny Snow Snow Snow
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Current Conditions at
CARBONDALE - (KMDH)
25°
Feels like 13°F
Clear
as of 2:52 PM CST
Rel. Humidity: 29%
Dew Point: -2°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
12 MPH
310° Northwest
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
30°
Feels like 21°F
Clear
as of 3:35 PM CST
Rel. Humidity: 28%
Dew Point: 1°F
Visibility: 10 Miles
Pressure: 30.42 in.
Flight Rule: VFR
Wind Data
10 MPH
350° North
Cloud Level(s): Clear
Mostly Sunny on M.L.King Day M.L.King Day... Mostly sunny, with a high near 25. North northwest wind 6 to 8 mph.

Clear on Tonight Tonight... Clear, with a low around 12. Light and variable wind.

Sunny on Tuesday Tuesday... Sunny, with a high near 36. Light south southwest wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

Increasing Clouds on Tuesday Night Tuesday Night... Increasing clouds, with a low around 27. South wind 6 to 11 mph, with gusts as high as 23 mph.

20% chance of rain & snow Wednesday Wednesday... A slight chance of rain and snow showers before 9am, then a slight chance of rain showers between 9am and noon. Partly sunny, with a high near 45. Southwest wind 5 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 26. Light and variable wind.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 40. North wind 3 to 6 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 17. Calm wind becoming north 5 to 7 mph after midnight.

10% chance of snow Friday Friday... A slight chance of snow showers after noon. Mostly cloudy, with a high near 26. North wind 7 to 11 mph, with gusts as high as 21 mph.

20% chance of snow Friday Night Friday Night... A chance of snow showers. Mostly cloudy, with a low around 5. North northeast wind around 10 mph, with gusts as high as 21 mph.

20% chance of snow Saturday Saturday... A chance of snow showers. Mostly cloudy, with a high near 16. North northeast wind around 10 mph, with gusts as high as 20 mph.

20% chance of snow Saturday Night Saturday Night... A chance of snow showers. Mostly cloudy, with a low around 8. North wind 6 to 8 mph.

10% chance of snow Sunday Sunday... A slight chance of snow showers. Mostly sunny, with a high near 23. North wind 5 to 7 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:08 AM
Sunset: 5:06 PM
Civil Sunrise:06:40 AM
Civil Sunset: 5:34 PM
Nautical Sunrise: 06:08 AM
Nautical Sunset: 6:06 PM
Astro Sunrise: 05:37 AM
Astro Sunset: 6:38 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.