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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

37°F

3°C

Humidity 45%
Wind Speed Calm
Barometer 30.44 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 28 Nov 1:45 pm CST
Extended Forecast for

Marion IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 40. Calm wind.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly after 4am. Increasing clouds, with a steady temperature around 32. Calm wind becoming southeast around 6 mph after midnight.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Rain showers, snow showers, and sleet before noon, then rain and snow showers between noon and 1pm, then rain showers after 1pm. High near 43. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than one inch possible.

    High: 43 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Showers, mainly before midnight. Low around 27. South wind 13 to 16 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    Low: 27 °F

    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 33. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 33 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. North northwest wind 5 to 8 mph becoming light and variable after midnight.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow showers after noon. Mostly cloudy, with a high near 34. East northeast wind 3 to 6 mph.

    High: 34 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly before midnight. Cloudy, with a low around 23. Light north northwest wind.

    Low: 23 °F

    Snow Showers
    Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. North northwest wind 3 to 7 mph.

    High: 33 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 40. Calm wind.
Tonight
A 40 percent chance of snow showers, mainly after 4am. Increasing clouds, with a steady temperature around 32. Calm wind becoming southeast around 6 mph after midnight.
Saturday
Rain showers, snow showers, and sleet before noon, then rain and snow showers between noon and 1pm, then rain showers after 1pm. High near 43. South southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than one inch possible.
Saturday Night
Showers, mainly before midnight. Low around 27. South wind 13 to 16 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Sunday
Mostly cloudy, with a high near 33. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Mostly cloudy, with a low around 22. North northwest wind 5 to 8 mph becoming light and variable after midnight.
Monday
A 20 percent chance of snow showers after noon. Mostly cloudy, with a high near 34. East northeast wind 3 to 6 mph.
Monday Night
Snow showers likely, mainly before midnight. Cloudy, with a low around 23. Light north northwest wind.
Tuesday
Partly sunny, with a high near 33. North northwest wind 3 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 18. Calm wind.
Wednesday
Mostly sunny, with a high near 40. Calm wind becoming south southwest 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 23. Calm wind becoming northwest around 5 mph after midnight.
Thursday
Partly sunny, with a high near 36. Northwest wind around 6 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marion IL
 37.73°N 88.92°W
Last Update:
1:56 pm CST Nov 28, 2025
Forecast Valid:
2pm CST Nov 28, 2025-6pm CST Dec 4, 2025
 
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Additional Resources

Radar & Satellite Image

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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