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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 am CST Jan 7, 2026 Latitude: 37.4519953 Longitude: -89.0736863 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Morning Fog on Today Increasing Clouds on Tonight 50% chance of rain on Thursday 30% chance of rain on Friday Partly Sunny on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday
High: 58°F Low: 45°F High: 66°F High: 66°F High: 50°F High: 37°F High: 43°F High: 48°F
Low: 59°F Low: 44°F Low: 28°F Low: 22°F Low: 29°F  
Morning Fog Increasing Clouds Rain Rain Partly Sunny Sunny Sunny Mostly Sunny
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Current Conditions at
MARION - (KMWA)
34°
Clear
as of 7:45 AM CST
Rel. Humidity: 93%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
6 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
CARBONDALE - (KMDH)
30°
Clear
as of 7:52 AM CST
Rel. Humidity: 100%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: VFR
Wind Data
3 MPH
170° South
Cloud Level(s): Clear
Current Conditions at
METROPOLIS MUNI ARP - (KM30)
32°
Cloudy
Fog
as of 8:15 AM CST
Rel. Humidity: 100%
Dew Point: 32°F
Visibility: 1/4 Miles
Pressure: 30.02 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 200ft
Current Conditions at
CAIRO - (KCIR)
34°
Cloudy
as of 8:15 AM CST
Rel. Humidity: 100%
Dew Point: 34°F
Visibility: 1/4 Miles
Pressure: 30.02 in.
Flight Rule: LIFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 200ft
Morning Fog on Today Today... Patchy fog before 9am. Otherwise, mostly sunny, with a high near 58. Light south wind.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 45. Calm wind becoming southeast around 5 mph after midnight.

50% chance of rain Thursday Thursday... A 50 percent chance of showers, mainly after noon. Cloudy, with a high near 66. South wind 6 to 16 mph, with gusts as high as 26 mph.

90% chance of thunderstorms Thursday Night Thursday Night... Showers and possibly a thunderstorm before 3am, then showers likely. Low around 59. South southwest wind 10 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%.

30% chance of rain Friday Friday... A 30 percent chance of showers. Mostly cloudy, with a high near 66. South southwest wind 5 to 9 mph becoming north in the afternoon.

60% chance of rain Friday Night Friday Night... Showers likely, mainly before midnight. Mostly cloudy, with a low around 44. North northeast wind 3 to 5 mph. Chance of precipitation is 60%.

Partly Sunny on Saturday Saturday... Partly sunny, with a high near 50. West northwest wind 6 to 11 mph, with gusts as high as 22 mph.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 28. West wind around 7 mph.

Sunny on Sunday Sunday... Sunny, with a high near 37. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 22. Light and variable wind.

Sunny on Monday Monday... Sunny, with a high near 43. Calm wind becoming south southwest 5 to 8 mph in the morning.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 29. South southwest wind 3 to 5 mph.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 48. Southwest wind 3 to 8 mph.

Current Radar Image


Sun Almanac for Mount Pleasant, Illinois
Sunrise: 07:11 AM
Sunset: 4:54 PM
Civil Sunrise:06:42 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:10 AM
Nautical Sunset: 5:56 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:27 PM
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