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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: 8:06 pm CST Nov 22, 2025 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thanksgiving Day Friday Saturday
Patchy Fog on Tonight Morning Fog on Sunday 50% chance of rain on Monday 20% chance of  on Tuesday Sunny on Wednesday Sunny on Thanksgiving Day Mostly Sunny on Friday 10% chance of  on Saturday
Low: 41°F High: 60°F High: 59°F High: 65°F High: 49°F High: 46°F High: 47°F High: 50°F
Low: 42°F Low: 51°F Low: 38°F Low: 28°F Low: 27°F Low: 29°F  
Patchy Fog Morning Fog Rain Partly Sunny Sunny Sunny Mostly Sunny Partly Sunny
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Current Conditions at
CARBONDALE - (KMDH)
43°
Cloudy
Fog
as of 8:40 PM CST
Rel. Humidity: 100%
Dew Point: 43°F
Visibility: 1/2 Miles
Pressure: 30.16 in.
Flight Rule: IFR
Wind Data
Calm
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
45°
Mostly Cloudy
Fog
as of 8:35 PM CST
Rel. Humidity: 93%
Dew Point: 43°F
Visibility: 1/2 Miles
Pressure: 30.16 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Broken at 300ft
Current Conditions at
CAIRO - (KCIR)
46°
Mostly Cloudy
as of 8:35 PM CST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 1 1/4 Miles
Pressure: 30.17 in.
Flight Rule: IFR
Wind Data
Calm
Patchy Fog on Tonight Tonight... Patchy fog. Otherwise, partly cloudy, with a low around 41. Calm wind.

Morning Fog on Sunday Sunday... Areas of fog before 9am. Otherwise, sunny, with a high near 60. Calm wind.

Increasing Clouds on Sunday Night Sunday Night... Increasing clouds, with a low around 42. Calm wind.

50% chance of rain Monday Monday... A 50 percent chance of showers after noon. Mostly cloudy, with a high near 59. Calm wind becoming south southeast around 6 mph in the morning.

100% chance of rain Monday Night Monday Night... Showers. Low around 51. South southeast wind around 6 mph. Chance of precipitation is 100%.

20% chance of  Tuesday Tuesday... A 20 percent chance of showers before noon. Partly sunny, with a high near 65. Southwest wind 3 to 7 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 38. Northwest wind 3 to 8 mph.

Sunny on Wednesday Wednesday... Sunny, with a high near 49. West northwest wind 6 to 10 mph, with gusts as high as 18 mph.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 28. Light west northwest wind.

Sunny on Thanksgiving Day Thanksgiving Day... Sunny, with a high near 46. Calm wind becoming west northwest around 6 mph.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 27. Calm wind.

Mostly Sunny on Friday Friday... Mostly sunny, with a high near 47. Calm wind becoming west around 6 mph.

10% chance of rain Friday Night Friday Night... A slight chance of showers. Partly cloudy, with a low around 29. Light southeast wind.

10% chance of  Saturday Saturday... A slight chance of showers. Partly sunny, with a high near 50. South southeast wind 3 to 8 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 06:44 AM
Sunset: 4:41 PM
Civil Sunrise:06:15 AM
Civil Sunset: 5:10 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:12 AM
Astro Sunset: 6:13 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.