National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

66°F

19°C

Humidity 46%
Wind Speed SW 3 mph
Barometer 30.12 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 9 Nov 4:45 pm CST
Extended Forecast for

Colp IL

  • Tonight

    Tonight: Clear, with a low around 43. Light southwest wind.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 70. Calm wind becoming west around 5 mph.

    High: 70 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: A 40 percent chance of showers after noon. Mostly sunny, with a high near 71. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 71 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 54. Northwest wind 13 to 15 mph, with gusts as high as 22 mph.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 32. North northwest wind 6 to 10 mph.

    Low: 32 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. North northwest wind 6 to 11 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. Light north northwest wind.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 43. Light southwest wind.
Tuesday
Sunny, with a high near 70. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 46. Calm wind.
Veterans Day
A 40 percent chance of showers after noon. Mostly sunny, with a high near 71. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 44. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 54. Northwest wind 13 to 15 mph, with gusts as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 32. North northwest wind 6 to 10 mph.
Friday
Mostly sunny, with a high near 49. North northwest wind 6 to 11 mph.
Friday Night
Mostly clear, with a low around 28. Light north northwest wind.
Saturday
Sunny, with a high near 52. Light northwest wind.
Saturday Night
Mostly clear, with a low around 31. Calm wind.
Sunday
A slight chance of showers. Mostly sunny, with a high near 57. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 38. Light south southeast wind.
Monday
Partly sunny, with a high near 61. Calm wind becoming south around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Colp IL
 37.81°N 89.08°W
Last Update:
4:00 pm CST Nov 9, 2026
Forecast Valid:
5pm CST Nov 9, 2026-6pm CST Nov 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation