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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

10°F

-12°C

Humidity 79%
Wind Speed Calm
Barometer 30.44 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Last update 1 Feb 7:45 am CST
Extended Forecast for

2 Miles E Johnston City IL

  • Today

    Today: Increasing clouds, with a high near 30. Wind chill values as low as -1. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 30 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 50 percent chance of snow before 11pm. Mostly cloudy, with a low around 20. South southwest wind around 7 mph.

    Low: 20 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39. Southwest wind 3 to 6 mph.

    High: 39 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow showers before noon, then a slight chance of rain and snow showers between noon and 3pm, then a slight chance of snow showers after 3pm. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Snow Showers
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. North wind around 6 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. North wind 5 to 8 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12. Light and variable wind.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 36. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 30. Wind chill values as low as -1. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
A 50 percent chance of snow before 11pm. Mostly cloudy, with a low around 20. South southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 39. Southwest wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 25. Calm wind.
Tuesday
A slight chance of snow showers before noon, then a slight chance of rain and snow showers between noon and 3pm, then a slight chance of snow showers after 3pm. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 20. North wind around 6 mph.
Wednesday
Partly sunny, with a high near 31. North wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 12. Light and variable wind.
Thursday
Mostly sunny, with a high near 36. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 27. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 45. West southwest wind 8 to 11 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Partly cloudy, with a low around 21. North wind around 7 mph.
Saturday
Mostly sunny, with a high near 33. North northeast wind 5 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Johnston City IL
 37.82°N 88.89°W
Last Update:
4:46 am CST Feb 1, 2026
Forecast Valid:
7am CST Feb 1, 2026-6pm CST Feb 7, 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