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

82°F

28°C

Humidity 79%
Wind Speed W 9 mph
Barometer 29.92 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 27 Jun 2:47 pm CDT
Extended Forecast for

Goreville IL

Extreme Heat Watch June 29, 11:00am until July 2, 08:00pm
Flood Watch June 27, 03:21pm until June 28, 07:00am
Severe T-storm Watch June 27, 03:21pm until June 27, 08:00pm
Heat Advisory June 28, 12:00pm until June 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Flood Watch
Severe T-storm Watch
Heat Advisory
  •  
    Flood Watch June 27, 03:21pm until June 28, 07:00am
    Severe T-storm Watch June 27, 03:21pm until June 27, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 78 °F

    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 89. South southwest wind 5 to 10 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind 5 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. South southwest wind 5 to 9 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South wind 3 to 6 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 75. Light south wind.

    Low: 75 °F

    Clear

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a steady temperature around 78. Southwest wind around 9 mph. Chance of precipitation is 60%.
Tonight
A 40 percent chance of showers and thunderstorms, mainly between 1am and 4am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 89. South southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 73. South wind 5 to 7 mph.
Monday
Sunny, with a high near 92. South southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 74. South wind 3 to 6 mph.
Tuesday
Sunny, with a high near 93. South wind 3 to 6 mph.
Tuesday Night
Clear, with a low around 75. Light south wind.
Wednesday
Sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 75. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 75. Calm wind.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Light south southwest wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Goreville IL
 37.56°N 88.99°W
Last Update:
2:01 pm CDT Jun 27, 2026
Forecast Valid:
3pm CDT Jun 27, 2026-6pm CDT Jul 3, 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