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.

Partly Cloudy

28°F

-2°C

Humidity 47%
Wind Speed NW 12 G 17 mph
Barometer 30.31 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 17 Mar 10:45 am CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • Today

    Today: Mostly sunny, with a high near 38. West wind 6 to 9 mph.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of snow showers after 8pm, mixing with rain after 5am. Mostly cloudy, with a low around 31. Light southeast wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of showers before 7am. 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

    Chance
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 44. South southwest wind around 6 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72. South wind 5 to 8 mph.

    High: 72 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. South wind 3 to 5 mph.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 76. Light and variable wind becoming west southwest 5 to 7 mph in the morning.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51. Southwest wind 3 to 6 mph.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 38. West wind 6 to 9 mph.
Tonight
A chance of snow showers after 8pm, mixing with rain after 5am. Mostly cloudy, with a low around 31. Light southeast wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers before 7am. 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
Mostly cloudy, with a low around 44. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 72. South wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 49. South wind 3 to 5 mph.
Friday
Mostly sunny, with a high near 76. Light and variable wind becoming west southwest 5 to 7 mph in the morning.
Friday Night
Partly cloudy, with a low around 51. Southwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 78. Southwest wind 6 to 9 mph.
Saturday Night
Clear, with a low around 56. South southwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 78. South southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Partly cloudy, with a low around 45. North northeast wind 10 to 13 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 60. Northeast wind around 11 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
Last Update:
8:51 am CDT Mar 17, 2026
Forecast Valid:
11am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation