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 42%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 21 Mar 1:45 pm CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. South southwest wind around 6 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Light south wind becoming south southwest 5 to 9 mph in the evening.

    Low: 64 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 40. North wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 59. North northeast wind around 11 mph, with gusts as high as 20 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. Northeast wind around 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 65. Southeast wind around 6 mph.

    High: 65 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 47. Light east southeast wind.

    Low: 47 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73. Light south wind increasing to 5 to 9 mph in the morning.

    High: 73 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 85. South southwest wind around 6 mph.
Tonight
Mostly clear, with a low around 64. Light south wind becoming south southwest 5 to 9 mph in the evening.
Sunday
Sunny, with a high near 84. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 40. North wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 59. North northeast wind around 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 41. Northeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 65. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 47. Light east southeast wind.
Wednesday
Partly sunny, with a high near 73. Light south wind increasing to 5 to 9 mph in the morning.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. South wind 6 to 8 mph.
Thursday
Sunny, with a high near 84. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 49. South southwest wind 11 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.
Friday
A chance of showers. Partly sunny, with a high near 60. North northeast wind 11 to 13 mph, with gusts as high as 20 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:
1:26 pm CDT Mar 21, 2026
Forecast Valid:
1pm CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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Additional Resources

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Chance of Precipitation