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

27°F

-3°C

Humidity 93%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 1 Jan 6:45 am CST
Extended Forecast for

Colp IL

  • New Year's Day

    New Year's Day: Sunny, with a high near 42. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 42 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Light northeast wind.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.

    High: 44 °F

    Cloudy

  • Friday Night

    Friday Night: A slight chance of rain and snow before 9pm, then a slight chance of rain between 9pm and midnight. Cloudy, with a low around 30. Northeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow
    then Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 42. North northeast wind 5 to 7 mph.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Light north northwest wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 43. Light and variable wind.

    High: 43 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Calm wind becoming south 5 to 8 mph in the evening.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 55 °F

    Sunny

Detailed Forecast

New Year's Day
Sunny, with a high near 42. Calm wind becoming northeast around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 30. Light northeast wind.
Friday
Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
A slight chance of rain and snow before 9pm, then a slight chance of rain between 9pm and midnight. Cloudy, with a low around 30. Northeast wind around 6 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 42. North northeast wind 5 to 7 mph.
Saturday Night
Mostly clear, with a low around 25. Light north northwest wind.
Sunday
Mostly sunny, with a high near 43. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 32. Calm wind becoming south 5 to 8 mph in the evening.
Monday
Sunny, with a high near 55. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 42. South wind around 6 mph.
Tuesday
Partly sunny, with a high near 61. South southwest wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 45. South southwest wind around 6 mph.
Wednesday
A slight chance of rain. Partly sunny, with a high near 59. West southwest wind 5 to 7 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Colp IL
 37.81°N 89.08°W
Last Update:
5:41 am CST Jan 1, 2026
Forecast Valid:
7am CST Jan 1, 2026-6pm CST Jan 7, 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