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

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

64°F

18°C

Humidity 68%
Wind Speed SW 7 mph
Barometer 30.08 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 3 Mar 11:45 am CST
Extended Forecast for

Colp IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 69. South southwest wind 6 to 10 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 60%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 70. South southwest wind 6 to 10 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 57. South wind 6 to 9 mph. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 71. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 58. South wind 5 to 7 mph. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South southwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 78 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 71. South southwest wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 71 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 69. South southwest wind 6 to 10 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 55. South wind around 6 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 70. South southwest wind 6 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 57. South wind 6 to 9 mph. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 71. Southwest wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 58. South wind 5 to 7 mph. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Partly sunny, with a high near 78. South southwest wind 8 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 21 mph.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. Cloudy, with a high near 71. South southwest wind 7 to 11 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 48. West northwest wind around 6 mph becoming calm in the evening.
Sunday
A slight chance of showers. Mostly cloudy, with a high near 67. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 53. South southwest wind around 6 mph.
Monday
A chance of showers. Sunny, with a high near 73. West southwest wind 6 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Colp IL
 37.81°N 89.08°W
Last Update:
11:12 am CST Mar 3, 2026
Forecast Valid:
12pm CST Mar 3, 2026-6pm CDT Mar 9, 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