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.

Fair

81°F

27°C

Humidity 37%
Wind Speed SW 10 mph
Barometer 29.97 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 7 Oct 12:45 pm CDT
Extended Forecast for

5 Miles SE Marion IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. Southwest wind around 8 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 58. South southwest wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Calm wind becoming north northeast around 6 mph in the morning.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the morning.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. Light south southeast wind.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 82. Light and variable wind becoming east 5 to 10 mph in the morning.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 57. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 75. East northeast wind 9 to 11 mph becoming west northwest in the afternoon.

    High: 75 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 85. Southwest wind around 8 mph.
Tonight
Clear, with a low around 58. South southwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. Calm wind becoming north northeast around 6 mph in the morning.
Thursday Night
Clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the morning.
Friday Night
Mostly clear, with a low around 61. Light south southeast wind.
Saturday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 82. Light and variable wind becoming east 5 to 10 mph in the morning.
Saturday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 57. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 75. East northeast wind 9 to 11 mph becoming west northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 57. Light southwest wind.
Columbus Day
Mostly sunny, with a high near 84. Light southwest wind increasing to 5 to 10 mph in the morning.
Monday Night
Mostly clear, with a low around 57. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 75. Northwest wind 8 to 13 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE Marion IL
 37.69°N 88.87°W
Last Update:
1:50 pm CDT Oct 7, 2026
Forecast Valid:
2pm CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation