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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Ozark IL

  • Overnight

    Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Patchy Fog

  • Sunday

    Sunday: A slight chance of drizzle before 7am, then a slight chance of showers between 7am and 8am, then a slight chance of drizzle after 8am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 45. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: Cloudy, with a low around 27. North wind around 9 mph.

    Low: 27 °F

    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 26. Calm wind becoming south southwest 5 to 9 mph after midnight.

    Low: 26 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South southwest wind around 15 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm.

    Low: 30 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 34. Light south wind.
Sunday
A slight chance of drizzle before 7am, then a slight chance of showers between 7am and 8am, then a slight chance of drizzle after 8am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 45. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Cloudy, with a low around 27. North wind around 9 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 26. Calm wind becoming south southwest 5 to 9 mph after midnight.
Tuesday
Mostly sunny, with a high near 47. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind around 15 mph, with gusts as high as 26 mph.
Wednesday
Partly sunny, with a high near 50. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A slight chance of rain showers before midnight, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 30. Northwest wind around 6 mph becoming calm.
Thursday
A chance of showers. Mostly cloudy, with a high near 40. East wind around 7 mph becoming north in the afternoon.
Thursday Night
A slight chance of showers. Mostly cloudy, with a low around 21. North northwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 29. North northwest wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 9. North northwest wind around 8 mph.
Saturday
Mostly sunny, with a high near 23. West northwest wind 5 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ozark IL
 37.55°N 88.76°W
Last Update:
1:16 am CST Dec 7, 2025
Forecast Valid:
1am CST Dec 7, 2025-6pm CST Dec 13, 2025
 
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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