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

66°F

19°C

Humidity 96%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 4:55 am CDT
Extended Forecast for

4 Miles NNW Tunnel Hill IL

Heat Advisory June 21, 12:00pm until June 24, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny, with a high near 88. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind 5 to 7 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 75. South wind 5 to 7 mph.

    Low: 75 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 93. South southwest wind 5 to 7 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 92. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Calm wind.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Calm wind.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 88. Calm wind becoming south southwest 5 to 9 mph in the morning.
Tonight
Mostly clear, with a low around 74. South wind 5 to 7 mph.
Saturday
Sunny, with a high near 92. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Clear, with a low around 75. South wind 5 to 7 mph.
Sunday
Sunny, with a high near 93. South southwest wind 5 to 7 mph.
Sunday Night
Clear, with a low around 75. South wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 92. Calm wind becoming south southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 76. Calm wind.
Tuesday
Sunny, with a high near 92. Calm wind.
Tuesday Night
Mostly clear, with a low around 76. Calm wind.
Wednesday
Sunny, with a high near 91. Light south southwest wind.
Wednesday Night
Mostly clear, with a low around 75. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Tunnel Hill IL
 37.6°N 88.9°W
Last Update:
4:15 am CDT Jun 20, 2025
Forecast Valid:
5am CDT Jun 20, 2025-6pm CDT Jun 26, 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