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

50°F

10°C

Humidity 71%
Wind Speed SW 5 mph
Barometer 29.98 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Nov 3:15 am CST
Extended Forecast for

Marion IL

  • Overnight

    Overnight: Mostly clear, with a low around 45. Light southwest wind.

    Low: 45 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, then gradually becoming sunny, with a high near 73. Light and variable wind becoming west 11 to 16 mph in the morning. Winds could gust as high as 22 mph.

    High: 73 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. Northwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 53. Northwest wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 53 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 31. North northwest wind 5 to 14 mph, with gusts as high as 18 mph.

    Low: 31 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 47. North northwest wind 7 to 13 mph, with gusts as high as 18 mph.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. North northwest wind around 5 mph becoming calm in the evening.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 49. Calm wind becoming north around 5 mph.

    High: 49 °F

    Sunny

  • Saturday Night

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

    Low: 26 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 45. Light southwest wind.
Veterans Day
Partly sunny, then gradually becoming sunny, with a high near 73. Light and variable wind becoming west 11 to 16 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Mostly clear, with a low around 39. Northwest wind 8 to 14 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 53. Northwest wind 7 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 31. North northwest wind 5 to 14 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 47. North northwest wind 7 to 13 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 25. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 49. Calm wind becoming north around 5 mph.
Saturday Night
Mostly clear, with a low around 26. Calm wind.
Sunday
Mostly sunny, with a high near 53. Calm wind becoming east around 6 mph.
Sunday Night
Partly cloudy, with a low around 28. Calm wind.
Monday
Mostly sunny, with a high near 52. Calm wind becoming east around 6 mph.
Monday Night
Mostly clear, with a low around 29. Calm wind.
Tuesday
Sunny, with a high near 56. Calm wind becoming east northeast around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.95°W
Last Update:
12:46 am CST Nov 11, 2026
Forecast Valid:
3am CST Nov 11, 2026-6pm CST Nov 17, 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