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 87%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Aug 4:15 am CDT
Extended Forecast for

Zeigler IL

Heat Advisory August 19, 04:36am until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 19, 04:36am until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Today

    High: 98 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 72. North northwest wind 3 to 6 mph.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 90. North wind 6 to 13 mph.

    High: 90 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. North northeast wind 6 to 10 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. North northeast wind 6 to 11 mph.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. North northeast wind 5 to 9 mph becoming calm in the evening.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91. North northeast wind 3 to 8 mph.

    High: 91 °F

    Sunny

  • Friday Night

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

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 98. Heat index values as high as 105. Calm wind becoming west 5 to 7 mph in the morning.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 72. North northwest wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 90. North wind 6 to 13 mph.
Wednesday Night
Partly cloudy, with a low around 67. North northeast wind 6 to 10 mph.
Thursday
Mostly sunny, with a high near 89. North northeast wind 6 to 11 mph.
Thursday Night
Mostly clear, with a low around 66. North northeast wind 5 to 9 mph becoming calm in the evening.
Friday
Sunny, with a high near 91. North northeast wind 3 to 8 mph.
Friday Night
Mostly clear, with a low around 66. North northeast wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 92. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 64. North wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 86. Light north northwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 58. North wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 82. Calm wind becoming north northwest 5 to 8 mph in the morning.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Zeigler IL
 37.92°N 89.05°W
Last Update:
4:30 am CDT Aug 19, 2025
Forecast Valid:
4am CDT Aug 19, 2025-6pm CDT Aug 25, 2025
 
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