Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

19°F

-7°C

Humidity 42%
Wind Speed Calm
Barometer 30.47 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 26 Jan 4:45 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

Extreme Cold Warning January 26, 05:26pm until January 27, 10:00am
Click here for hazard details and duration
Extreme Cold Warning
  •  
    Extreme Cold Warning January 26, 05:26pm until January 27, 10:00am

    NOW until 10:00am Tue

    Extreme Cold Warning

  • Tonight

    Low: 8 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. Wind chill values as low as zero. Southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 0. Light northwest wind.

    Low: 0 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29. Wind chill values as low as zero. Calm wind becoming west southwest around 6 mph.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 10. Calm wind.

    Low: 10 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 22. Calm wind becoming north around 6 mph in the morning.

    High: 22 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 2. North wind 3 to 5 mph.

    Low: 2 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 16. North wind 5 to 9 mph.

    High: 16 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly clear, with a temperature rising to around 12 by 3am. Wind chill values as low as -9. Light south wind becoming south southwest 8 to 13 mph in the evening. Winds could gust as high as 21 mph.
Tuesday
Mostly sunny, with a high near 32. Wind chill values as low as zero. Southwest wind 6 to 10 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 0. Light northwest wind.
Wednesday
Mostly sunny, with a high near 29. Wind chill values as low as zero. Calm wind becoming west southwest around 6 mph.
Wednesday Night
Partly cloudy, with a low around 10. Calm wind.
Thursday
Mostly cloudy, with a high near 22. Calm wind becoming north around 6 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 2. North wind 3 to 5 mph.
Friday
Partly sunny, with a high near 16. North wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around -1. North northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 19. Northwest wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 1. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 26. Light and variable wind becoming west southwest 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 13. South southwest wind 3 to 5 mph.
Monday
Mostly sunny, with a high near 35. Southwest wind 5 to 7 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Herrin IL
 37.8°N 89°W
3:51 pm CST Jan 26, 2026
5pm CST Jan 26, 2026-6pm CST Feb 2, 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