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

40°F

4°C

Humidity 66%
Wind Speed Calm
Barometer 30.40 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 23 Mar 11:35 pm CDT
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. East northeast wind around 7 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64. East southeast wind around 6 mph.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 46. East wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. Light south wind becoming south southwest 5 to 10 mph in the morning.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. South wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 46. South southwest wind around 15 mph becoming north northwest after midnight. Winds could gust as high as 24 mph.

    Low: 46 °F

    Partly Cloudy
    then Chance
    T-storms

  • Friday

    Friday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 56. North wind around 16 mph, with gusts as high as 25 mph.

    High: 56 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. East northeast wind around 7 mph.
Tuesday
Mostly sunny, with a high near 64. East southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 46. East wind around 5 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 75. Light south wind becoming south southwest 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 62. South wind 7 to 11 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 87. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 46. South southwest wind around 15 mph becoming north northwest after midnight. Winds could gust as high as 24 mph.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 56. North wind around 16 mph, with gusts as high as 25 mph.
Friday Night
Mostly clear, with a low around 33. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 57. Northeast wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 38. Light east wind.
Sunday
Partly sunny, with a high near 67. South wind 5 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 50. South wind around 7 mph.
Monday
Mostly sunny, with a high near 76. South wind 8 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:
10:11 pm CDT Mar 23, 2026
Forecast Valid:
11pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation