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

41°F

5°C

Humidity 42%
Wind Speed S 6 mph
Barometer 29.99 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 5 Dec 1:47 pm CST
Extended Forecast for

Ozark IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 40. South southwest wind 3 to 6 mph.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, increasing clouds, with a low around 27. South southwest wind 3 to 6 mph.

    Low: 27 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 43. Light and variable wind.

    High: 43 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 31. Light east southeast wind.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before noon. Mostly cloudy, with a high near 45. Light and variable wind becoming north northwest 5 to 10 mph in the morning.

    High: 45 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 21. North wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 21 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35. North wind around 6 mph becoming calm in the morning.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 40. South southwest wind 3 to 6 mph.
Tonight
Patchy fog after 4am. Otherwise, increasing clouds, with a low around 27. South southwest wind 3 to 6 mph.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 43. Light and variable wind.
Saturday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 31. Light east southeast wind.
Sunday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 45. Light and variable wind becoming north northwest 5 to 10 mph in the morning.
Sunday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 21. North wind 6 to 10 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 35. North wind around 6 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Mostly sunny, with a high near 45. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 36. South southwest wind 9 to 14 mph, with gusts as high as 23 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 48. South southwest wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 24. Northwest wind around 8 mph.
Thursday
Partly sunny, with a high near 35. Northwest wind 6 to 8 mph becoming south southwest in the afternoon.
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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:
2:12 pm CST Dec 5, 2025
Forecast Valid:
2pm CST Dec 5, 2025-6pm CST Dec 11, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation