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

81°F

27°C

Humidity 70%
Wind Speed S 7 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 19 May 6:45 pm CDT
Extended Forecast for

2 Miles ESE Goreville IL

Flood Watch until May 20, 01:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until May 20, 01:00pm

    NOW until 1:00pm Wed

    Flood Watch

  • Tonight

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 68. North wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 56. North northeast wind 5 to 9 mph.

    Low: 56 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 73. East northeast wind around 8 mph.

    High: 73 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 59. East northeast wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 76. East wind 6 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southwest wind 3 to 7 mph. Chance of precipitation is 50%.

    Low: 61 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South southwest wind 3 to 5 mph.

    High: 78 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 61. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 70%.
Wednesday
Showers and thunderstorms likely, mainly before 3pm. Mostly cloudy, with a high near 68. North wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Wednesday Night
Mostly cloudy, with a low around 56. North northeast wind 5 to 9 mph.
Thursday
Mostly cloudy, with a high near 73. East northeast wind around 8 mph.
Thursday Night
A chance of showers and thunderstorms before 1am, then showers between 1am and 4am, then showers and possibly a thunderstorm after 4am. Low around 59. East northeast wind 6 to 8 mph. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. High near 76. East wind 6 to 10 mph becoming south southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southwest wind 3 to 7 mph. Chance of precipitation is 50%.
Saturday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78. South southwest wind 3 to 5 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Calm wind becoming south around 5 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind.
Memorial Day
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Calm wind becoming south southeast around 6 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Light south southeast wind.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 83. South wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Goreville IL
 37.56°N 88.93°W
Last Update:
8:31 pm CDT May 19, 2026
Forecast Valid:
8pm CDT May 19, 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