Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

82°F

28°C

Humidity 58%
Wind Speed S 6 mph
Barometer 30.04 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 4 Aug 1:47 pm CDT
Extended Forecast for

4 Miles ESE Marion IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 88. East southeast wind around 5 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Light southeast wind.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 70. Calm wind.

    Low: 70 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly between 7am and 1pm.  Partly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the morning.

    High: 89 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 89. Calm wind becoming southwest 5 to 7 mph in the morning.  Chance of precipitation is 60%.

    High: 89 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 70. Light south southwest wind.

    Low: 70 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers and thunderstorms.  Partly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. East southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 64. Light southeast wind.
Wednesday
Sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 70. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly between 7am and 1pm. Partly sunny, with a high near 89. Calm wind becoming southwest around 6 mph in the morning.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 71. Calm wind.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south southwest wind.
Saturday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 71. Calm wind.
Sunday
Sunny, with a high near 92. Light south wind becoming south southwest 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South wind 5 to 8 mph.
Monday
Sunny, with a high near 95. South southwest wind 7 to 14 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Marion IL
 37.71°N 88.86°W
1:54 pm CDT Aug 4, 2026
2pm CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
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Additional Resources

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Hourly Weather Forecast

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