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.

Overcast

63°F

17°C

Humidity 83%
Wind Speed N 8 mph
Barometer 30.12 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 20 May 4:45 pm CDT
Extended Forecast for

2 Miles W Colp IL

  • 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 72. Northeast wind 6 to 8 mph.

    High: 72 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 59. East northeast wind around 7 mph.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

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

    High: 75 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 61. Southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southwest wind 3 to 5 mph.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. North northeast wind 5 to 9 mph becoming light.
Thursday
Mostly cloudy, with a high near 72. Northeast wind 6 to 8 mph.
Thursday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 59. East northeast wind around 7 mph.
Friday
Showers and possibly a thunderstorm. High near 75. East northeast wind around 8 mph becoming southeast in the afternoon. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 61. Southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 70%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southwest wind 3 to 5 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 40%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.
Memorial Day
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 79. Calm wind becoming east southeast around 6 mph in the morning.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East southeast wind around 6 mph becoming calm in the evening.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. South southeast wind 3 to 7 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Southeast wind 3 to 6 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South wind 3 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Colp IL
 37.81°N 89.11°W
Last Update:
4:51 pm CDT May 20, 2026
Forecast Valid:
5pm CDT May 20, 2026-6pm CDT May 27, 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