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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: 7:37 pm CST Jan 23, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
30% chance of snow on Tonight 100% chance of snow on Saturday 90% chance of snow & sleet on Sunday Mostly Sunny on Monday Sunny on Tuesday Mostly Sunny on Wednesday Partly Sunny on Thursday Mostly Sunny on Friday
Low: 7 °F High: 15°F High: 16°F High: 14°F High: 24°F High: 25°F High: 19°F High: 19°F
Low: 12°F Low: 1 °F Low: -2°F Low: 8 °F Low: 5 °F Low: 4 °F  
Snow Snow Snow & Sleet Mostly Sunny Sunny Mostly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
MARION - (KMWA)
10°
Feels like -4°F
Cloudy
as of 7:15 PM CST
Rel. Humidity: 32%
Dew Point: -13°F
Visibility: 10 Miles
Pressure: 30.66 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 20 MPH
010° North
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
CARBONDALE - (KMDH)
10°
Feels like -2°F
Cloudy
as of 6:52 PM CST
Rel. Humidity: 39%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.65 in.
Flight Rule: VFR
Wind Data
9 MPH
010° North
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
CAIRO - (KCIR)
16°
Feels like 1°F
Cloudy
as of 7:15 PM CST
Rel. Humidity: 40%
Dew Point: -4°F
Visibility: 10 Miles
Pressure: 30.60 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 22 MPH
020° North
Cloud Level(s): Solid Overcast at 8500ft
30% chance of snow Tonight Tonight... A 30 percent chance of snow, mainly after 5am. Cloudy, with a low around 7. Wind chill values as low as -8. North northeast wind 9 to 13 mph, with gusts as high as 24 mph.
100% chance of snow Saturday Saturday... Snow, mainly after 8am. High near 15. Wind chill values as low as -7. Northeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
100% chance of snow & sleet Saturday Night Saturday Night... Snow before midnight, then snow, possibly mixed with sleet between midnight and 4am, then snow after 4am. Low around 12. Wind chill values as low as zero. Northeast wind 7 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
90% chance of snow & sleet Sunday Sunday... Snow, possibly mixed with sleet, becoming all snow after noon. High near 16. Wind chill values as low as zero. North wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
30% chance of snow Sunday Night Sunday Night... A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 1. North northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 14. Northwest wind 5 to 9 mph becoming light west in the afternoon.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around -2. Calm wind becoming south southwest 5 to 7 mph after midnight.
Sunny on Tuesday Tuesday... Sunny, with a high near 24. Southwest wind 5 to 9 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 8. Light and variable wind.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 25. Calm wind becoming west northwest around 6 mph in the afternoon.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 5. Light and variable wind becoming northwest around 5 mph after midnight.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 19. North northwest wind 5 to 7 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 4. Light north wind.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 19. North northwest wind 3 to 6 mph.
Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:06 AM
Sunset: 5:11 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:39 PM
Nautical Sunrise: 06:06 AM
Nautical Sunset: 6:10 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 6:41 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.