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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

63°F

17°C

Humidity 83%
Wind Speed N 10 mph
Barometer 30.13 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 May 3:45 pm CDT
Extended Forecast for

Colp IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers before 4pm. Cloudy, with a high near 66. North wind around 10 mph.

    High: 66 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. North northeast wind 5 to 9 mph becoming light.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 73. Northeast wind 6 to 8 mph.

    High: 73 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm, mainly after 4am. Mostly cloudy, with a low around 60. East northeast wind around 7 mph. Chance of precipitation is 70%.

    Low: 60 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 75. East wind around 8 mph becoming south in the afternoon. Chance of precipitation is 90%.

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Southwest wind 3 to 5 mph.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south wind.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Light south wind.

    High: 81 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 20 percent chance of showers before 4pm. Cloudy, with a high near 66. North wind around 10 mph.
Tonight
Mostly cloudy, with a low around 55. North northeast wind 5 to 9 mph becoming light.
Thursday
Mostly cloudy, with a high near 73. Northeast wind 6 to 8 mph.
Thursday Night
Showers likely and possibly a thunderstorm, mainly after 4am. Mostly cloudy, with a low around 60. East northeast wind around 7 mph. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. High near 75. East wind around 8 mph becoming south in the afternoon. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 62. Southwest wind 3 to 6 mph. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Southwest wind 3 to 5 mph.
Saturday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. Light south wind.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Light south wind.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Light and variable wind.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Calm wind becoming southeast around 6 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southeast wind 3 to 8 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:
1:21 pm CDT May 20, 2026
Forecast Valid:
3pm CDT May 20, 2026-6pm CDT May 26, 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