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.

Mostly Cloudy and Breezy

39°F

4°C

Humidity 61%
Wind Speed NW 21 G 30 mph
Barometer 29.85 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 10 Dec 1:45 pm CST
Extended Forecast for

Marion IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 47. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 31 mph.

    High: 47 °F

    Mostly Cloudy
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. Northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow showers after 5pm. Mostly cloudy, with a high near 41. Calm wind becoming west southwest around 6 mph in the morning.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36. South wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 46. West southwest wind 6 to 11 mph becoming north northwest in the afternoon.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 24. North northwest wind 3 to 7 mph.

    Low: 24 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 35. North wind 3 to 7 mph.

    High: 35 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 9. North wind 6 to 10 mph.

    Low: 9 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 21. North wind 6 to 10 mph.

    High: 21 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 47. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 31 mph.
Tonight
Mostly cloudy, with a low around 26. Northwest wind 8 to 13 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
A 20 percent chance of snow showers after 5pm. Mostly cloudy, with a high near 41. Calm wind becoming west southwest around 6 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 36. South wind around 6 mph.
Friday
Partly sunny, with a high near 46. West southwest wind 6 to 11 mph becoming north northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 24. North northwest wind 3 to 7 mph.
Saturday
Partly sunny, with a high near 35. North wind 3 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 9. North wind 6 to 10 mph.
Sunday
Sunny, with a high near 21. North wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 11. North northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 37. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Mostly cloudy, with a low around 26. South southwest wind 3 to 6 mph.
Tuesday
Partly sunny, with a high near 44. South wind 5 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
1:46 pm CST Dec 10, 2025
Forecast Valid:
2pm CST Dec 10, 2025-6pm CST Dec 16, 2025
 
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Additional Resources

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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