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.

Fair

77°F

25°C

Humidity 74%
Wind Speed SW 3 mph
Barometer 30.16 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 18 Sep 2:35 am CDT
Extended Forecast for

4 Miles NE Goreville IL

Heat Advisory September 18, 02:54am until September 20, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 18, 02:54am until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Overnight

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 95. Calm wind.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 94. Calm wind becoming west southwest around 6 mph in the morning.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. Light south southwest wind.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 94. West wind 3 to 6 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. North wind 3 to 7 mph.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 73. Calm wind.
Friday
A 10 percent chance of showers and thunderstorms after 5pm. Sunny, with a high near 95. Calm wind.
Friday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 72. Calm wind.
Saturday
Sunny, with a high near 94. Calm wind becoming west southwest around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 73. Light south southwest wind.
Sunday
Mostly sunny, with a high near 94. West wind 3 to 6 mph.
Sunday Night
Partly cloudy, with a low around 71. Calm wind.
Monday
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. North wind 3 to 7 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. North wind 3 to 7 mph.
Tuesday
Partly sunny, with a high near 76. North wind 7 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 59. North wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday
Mostly sunny, with a high near 74. North wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 76. North wind 3 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Goreville IL
 37.6°N 88.93°W
Last Update:
1:16 am CDT Sep 18, 2026
Forecast Valid:
2am CDT Sep 18, 2026-6pm CDT Sep 24, 2026
 
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Additional Resources

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Chance of Precipitation