National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

21°F

-6°C

Humidity 63%
Wind Speed W 7 mph
Barometer 30.41 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 30 Dec 9:45 am CST
Extended Forecast for

Herrin ILSimilar City Names

  • Today

    Today: Increasing clouds, with a high near 35. West wind 6 to 9 mph.

    High: 35 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southwest wind around 7 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 44. West northwest wind 6 to 10 mph.

    High: 44 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27. Light and variable wind.

    Low: 27 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 41. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 41 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31. Calm wind.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 49. Calm wind becoming east northeast around 6 mph in the morning.

    High: 49 °F

    Cloudy

  • Friday Night

    Friday Night: A slight chance of showers before midnight. Mostly cloudy, with a low around 29. North northeast wind 3 to 6 mph.

    Low: 29 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 44. North northeast wind 3 to 7 mph.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 35. West wind 6 to 9 mph.
Tonight
Mostly clear, with a low around 27. Southwest wind around 7 mph.
Wednesday
Increasing clouds, with a high near 44. West northwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 27. Light and variable wind.
New Year's Day
Mostly sunny, with a high near 41. North northeast wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 31. Calm wind.
Friday
Cloudy, with a high near 49. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 29. North northeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 44. North northeast wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 28. Calm wind.
Sunday
Mostly sunny, with a high near 51. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 35. South wind around 6 mph becoming west southwest after midnight.
Monday
Sunny, with a high near 52. West northwest wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Herrin ILSimilar City Names
 37.8°N 89.03°W
Last Update:
5:41 am CST Dec 30, 2025
Forecast Valid:
10am CST Dec 30, 2025-6pm CST Jan 5, 2026
 
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Additional Resources

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