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

31°F

-1°C

Humidity 62%
Wind Speed NE 3 mph
Barometer 30.19 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 8 Feb 9:55 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: Mostly clear, with a low around 28. East wind around 5 mph becoming calm after midnight.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind becoming south southwest around 6 mph in the evening.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 62. Southwest wind around 7 mph becoming north northwest in the afternoon.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 35. North wind around 6 mph.

    Low: 35 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51. North wind 5 to 7 mph.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30. Light and variable wind.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers after noon. Mostly cloudy, with a high near 47. East wind 3 to 7 mph.

    High: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 34. East wind 3 to 6 mph.

    Low: 34 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 28. East wind around 5 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 54. Light and variable wind.
Monday Night
Mostly clear, with a low around 40. Calm wind becoming south southwest around 6 mph in the evening.
Tuesday
Partly sunny, with a high near 62. Southwest wind around 7 mph becoming north northwest in the afternoon.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 35. North wind around 6 mph.
Wednesday
Mostly sunny, with a high near 51. North wind 5 to 7 mph.
Wednesday Night
Mostly cloudy, with a low around 30. Light and variable wind.
Thursday
A slight chance of showers after noon. Mostly cloudy, with a high near 47. East wind 3 to 7 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34. East wind 3 to 6 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 48. East wind 6 to 8 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 33. East wind around 7 mph.
Saturday
A chance of showers. Mostly cloudy, with a high near 50. East wind 7 to 9 mph becoming south in the afternoon.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 35. East northeast wind around 8 mph becoming west northwest after midnight.
Sunday
A slight chance of showers. Mostly sunny, with a high near 51. West northwest wind 7 to 10 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:
9:27 pm CST Feb 8, 2026
Forecast Valid:
10pm CST Feb 8, 2026-6pm CST Feb 15, 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