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

29°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 31 Dec 8:35 pm CST
Extended Forecast for

2 Miles ENE Herrin IL

  • Tonight

    Tonight: Mostly clear, with a low around 28. Calm wind becoming southwest around 5 mph.

    Low: 28 °F

    Mostly Clear

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 43. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 43 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.

    High: 44 °F

    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers. Cloudy, with a low around 31. Northeast wind around 6 mph.

    Low: 31 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 43. North northeast wind 5 to 7 mph.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Light north wind.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 45. Calm wind becoming north northeast around 5 mph.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 28. Calm wind becoming southwest around 5 mph.
New Year's Day
Mostly sunny, with a high near 43. Northeast wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 30. Calm wind.
Friday
Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
A 20 percent chance of showers. Cloudy, with a low around 31. Northeast wind around 6 mph.
Saturday
Partly sunny, with a high near 43. North northeast wind 5 to 7 mph.
Saturday Night
Mostly clear, with a low around 26. Light north wind.
Sunday
Mostly sunny, with a high near 45. Calm wind becoming north northeast around 5 mph.
Sunday Night
Partly cloudy, with a low around 33. Calm wind becoming south 5 to 7 mph in the evening.
Monday
Sunny, with a high near 55. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 42. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 61. Southwest wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 39. Southwest wind around 6 mph becoming northwest after midnight.
Wednesday
Partly sunny, with a high near 56. Northwest wind 5 to 8 mph becoming south southwest in the afternoon.
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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:
7:47 pm CST Dec 31, 2025
Forecast Valid:
8pm CST Dec 31, 2025-6pm CST Jan 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation