National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

79°F

26°C

Humidity 74%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 3 Aug 10:47 am CDT
Extended Forecast for

3 Miles SSE Tunnel Hill IL

  • Today

    Today: Mostly sunny, with a high near 84. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 64. Calm wind.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64. Calm wind.

    Low: 64 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.

    High: 88 °F

    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 84. Calm wind becoming north northeast around 5 mph in the afternoon.
Tonight
Clear, with a low around 64. Calm wind.
Tuesday
Sunny, with a high near 87. Calm wind.
Tuesday Night
Clear, with a low around 64. Calm wind.
Wednesday
Sunny, with a high near 88. Calm wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
Mostly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. Calm wind.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 5 mph.
Friday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming south southwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 70. Calm wind.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south southwest 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Tunnel Hill IL
 37.51°N 88.85°W
Last Update:
11:41 am CDT Aug 3, 2026
Forecast Valid:
11am CDT Aug 3, 2026-6pm CDT Aug 9, 2026
 
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Additional Resources

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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