Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

77°F

25°C

Humidity 98%
Wind Speed SW 3 mph
Barometer 29.98 in
Dewpoint 77°F (25°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 25 Jul 10:15 pm CDT
Extended Forecast for

Ozark IL

Heat Advisory July 26, 11:00am until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 72. Calm wind.

    Low: 72 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly before 2pm.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 92. Light west wind.

    High: 92 °F

    Chance
    T-storms and
    Patchy Fog

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 95. Heat index values as high as 109. Southwest wind 3 to 8 mph.

    High: 95 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. South southwest wind around 8 mph.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. West southwest wind 6 to 9 mph becoming northwest in the afternoon.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 71. North northeast wind 3 to 6 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 88. North northeast wind 3 to 8 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67. Light northeast wind.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 72. Calm wind.
Sunday
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 92. Light west wind.
Sunday Night
Mostly clear, with a low around 74. Calm wind.
Monday
Mostly sunny, with a high near 95. Heat index values as high as 109. Southwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 78. South southwest wind around 8 mph.
Tuesday
Sunny, with a high near 93. West southwest wind 6 to 9 mph becoming northwest in the afternoon.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 71. North northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 88. North northeast wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 67. Light northeast wind.
Thursday
Sunny, with a high near 87. Calm wind becoming north northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 68. Calm wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Ozark IL
 37.55°N 88.76°W
9:06 pm CDT Jul 25, 2026
10pm CDT Jul 25, 2026-6pm CDT Aug 1, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database