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

66°F

19°C

Humidity 94%
Wind Speed SE 14 mph
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 May 9:50 pm CDT
Extended Forecast for

5 Miles NW Goreville IL

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 65. South wind 9 to 13 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 87. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 87 °F

    Chance
    Showers then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 4am, then showers likely after 4am. Mostly cloudy, with a low around 62. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 70%.

    Low: 62 °F

    T-storms
    Likely then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. North wind around 9 mph. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 56. North northeast wind 7 to 9 mph.

    Low: 56 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 74. East northeast wind around 8 mph.

    High: 74 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. East northeast wind 6 to 9 mph. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 76. East southeast wind 7 to 9 mph becoming south southwest in the afternoon.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southwest wind 5 to 8 mph.

    Low: 63 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 65. South wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. High near 87. South southwest wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 4am, then showers likely after 4am. Mostly cloudy, with a low around 62. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 70%.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. North wind around 9 mph. Chance of precipitation is 60%.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 56. North northeast wind 7 to 9 mph.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 74. East northeast wind around 8 mph.
Thursday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. East northeast wind 6 to 9 mph. Chance of precipitation is 70%.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 76. East southeast wind 7 to 9 mph becoming south southwest in the afternoon.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. South southwest wind 5 to 8 mph.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. Southwest wind around 6 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South southeast wind 3 to 5 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 65. Light south southeast wind.
Memorial Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. South wind 3 to 7 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Goreville IL
 37.6°N 89.04°W
Last Update:
10:26 pm CDT May 18, 2026
Forecast Valid:
11pm CDT May 18, 2026-6pm CDT May 25, 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