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.

Mostly Cloudy

79°F

26°C

Humidity 79%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 19 Aug 3:45 pm CDT
Extended Forecast for

5 Miles W Goreville IL

Heat Advisory August 19, 04:27pm until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 04:27pm until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • This Afternoon

    High: 96 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 73. Light and variable wind.

    Low: 73 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. North northeast wind 6 to 9 mph.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. North northeast wind 5 to 7 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 86. North northeast wind 6 to 8 mph.

    High: 86 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 65. Light north northeast wind.

    Low: 65 °F

    Clear

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 96. Light north wind.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Partly cloudy, with a low around 73. Light and variable wind.
Wednesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. North northeast wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 66. North northeast wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 86. North northeast wind 6 to 8 mph.
Thursday Night
Mostly clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 89. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 65. Light north northeast wind.
Saturday
Sunny, with a high near 89. Calm wind becoming north around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 64. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 84. North northwest wind 5 to 7 mph.
Sunday Night
Mostly clear, with a low around 60. North wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Goreville IL
 37.56°N 89.07°W
Last Update:
2:45 pm CDT Aug 19, 2025
Forecast Valid:
4pm CDT Aug 19, 2025-6pm CDT Aug 25, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation