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.

Overcast

26°F

-3°C

Humidity 54%
Wind Speed NW 7 G 17 mph
Barometer 30.15 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 16 Mar 9:55 pm CDT
Extended Forecast for

4 Miles ESE Marion IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. West northwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 38. Northwest wind 6 to 8 mph.

    High: 38 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers after 1am. Mostly cloudy, with a low around 31. Light south southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 21 mph.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 61. South wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 61 °F

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 43. South southwest wind around 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72. South southwest wind 5 to 7 mph.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. South southwest wind 3 to 5 mph.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76. Southwest wind 3 to 7 mph.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. South southwest wind around 6 mph.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. West northwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
Increasing clouds, with a high near 38. Northwest wind 6 to 8 mph.
Tuesday Night
A 30 percent chance of snow showers after 1am. Mostly cloudy, with a low around 31. Light south southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 21 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 61. South wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 43. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 72. South southwest wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 48. South southwest wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 76. Southwest wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 53. South southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 79. Southwest wind 6 to 9 mph.
Saturday Night
Mostly clear, with a low around 52. Southwest wind around 7 mph.
Sunday
Sunny, with a high near 74. Southwest wind 7 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 42. North wind around 10 mph.
Monday
Partly sunny, with a high near 58. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Marion IL
 37.71°N 88.86°W
Last Update:
8:46 pm CDT Mar 16, 2026
Forecast Valid:
10pm CDT Mar 16, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation