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

33°F

1°C

Humidity 77%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 11 Feb 8:35 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 52. Light southeast wind.

    High: 52 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 57. Calm wind becoming south southeast around 6 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 54. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 54 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly before midnight. Cloudy, with a low around 45. East wind 6 to 8 mph. Chance of precipitation is 60%.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before noon. Mostly sunny, with a high near 55. North wind 7 to 10 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Calm wind.
Thursday
Partly sunny, with a high near 52. Light southeast wind.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
Sunny, with a high near 57. Calm wind becoming south southeast around 6 mph.
Friday Night
Mostly cloudy, with a low around 36. Calm wind.
Saturday
A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 54. Calm wind becoming southeast 5 to 7 mph in the morning.
Saturday Night
Showers likely, mainly before midnight. Cloudy, with a low around 45. East wind 6 to 8 mph. Chance of precipitation is 60%.
Sunday
A chance of showers before noon. Mostly sunny, with a high near 55. North wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 61. Calm wind becoming south southeast 5 to 8 mph in the morning.
Monday Night
Mostly cloudy, with a low around 44. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 7 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 54. South southwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of showers. Partly sunny, with a high near 68. South southwest wind 13 to 16 mph, with gusts as high as 24 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:
8:26 pm CST Feb 11, 2026
Forecast Valid:
8pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation