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

75°F

24°C

Humidity 98%
Wind Speed SW 5 mph
Barometer 29.90 in
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Last update 28 Jun 3:35 am CDT
Extended Forecast for

2 Miles WNW Ozark IL

Extreme Heat Watch June 29, 11:00am until July 2, 08:00pm
Flood Watch June 28, 04:13am until June 28, 07:00am
Heat Advisory June 28, 12:00pm until June 28, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Flood Watch
Heat Advisory
  •  
    Flood Watch June 28, 04:13am until June 28, 07:00am

    NOW until 7:00am Sun

    Flood Watch

  • Overnight

    Low: 72 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming south southwest 5 to 8 mph in the morning.

    High: 90 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South southwest wind 3 to 5 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. Heat index values as high as 105. South southwest wind 3 to 8 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 75. South wind 3 to 5 mph.

    Low: 75 °F

    Clear

  • Tuesday

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

    High: 94 °F

    Sunny

  • Tuesday Night

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

    Low: 75 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 94 °F

    Sunny

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Calm wind.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 90. Calm wind becoming south southwest 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South southwest wind 3 to 5 mph.
Monday
Sunny, with a high near 92. Heat index values as high as 105. South southwest wind 3 to 8 mph.
Monday Night
Clear, with a low around 75. South wind 3 to 5 mph.
Tuesday
Sunny, with a high near 94. Calm wind becoming south southwest around 6 mph in the morning.
Tuesday Night
Clear, with a low around 75. Calm wind.
Wednesday
Sunny, with a high near 94. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 76. Calm wind.
Thursday
Sunny, with a high near 93. Calm wind becoming south around 5 mph.
Thursday Night
Mostly clear, with a low around 76. Calm wind.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Light and variable wind.
Friday Night
Mostly clear, with a low around 76. Calm wind.
Independence Day
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Light and variable wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Ozark IL
 37.55°N 88.82°W
Last Update:
1:26 am CDT Jun 28, 2026
Forecast Valid:
4am CDT Jun 28, 2026-6pm CDT Jul 4, 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