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.

Partly Cloudy

86°F

30°C

Humidity 43%
Wind Speed S 6 mph
Barometer 29.94 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 20 Jun 4:45 pm CDT
Extended Forecast for

Goreville IL

  • Tonight

    Tonight: Mostly clear, with a low around 66. Calm wind.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 86. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 71. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.

    Low: 71 °F

    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. West southwest wind around 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 63. North northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 10%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. North northeast wind 3 to 5 mph.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 66. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 86. South wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%.
Sunday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Low around 71. South southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. West southwest wind around 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%.
Monday Night
A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 63. North northwest wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 10%.
Tuesday
Mostly sunny, with a high near 81. North northeast wind 3 to 5 mph.
Tuesday Night
Mostly clear, with a low around 63. Calm wind.
Wednesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 64. Calm wind.
Thursday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 64. Calm wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Light south wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 5 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Goreville IL
 37.56°N 88.99°W
Last Update:
4:31 pm CDT Jun 20, 2026
Forecast Valid:
5pm CDT Jun 20, 2026-6pm CDT Jun 27, 2026
 
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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