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.

Partly Cloudy

64°F

18°C

Humidity 79%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 3 Sep 2:15 am CDT
Extended Forecast for

2 Miles NW Johnston City IL

  • Overnight

    Overnight: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 78. North northwest wind around 6 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm wind becoming south around 5 mph after midnight.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. South southwest wind 6 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. North northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 1pm. Mostly sunny, with a high near 75. Calm wind becoming north 5 to 7 mph in the morning.

    High: 75 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 58. Calm wind.
Wednesday
Sunny, with a high near 87. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 61. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 78. North northwest wind around 6 mph.
Thursday Night
Mostly clear, with a low around 58. Calm wind becoming south around 5 mph after midnight.
Friday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 83. South southwest wind 6 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. North northwest wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 50%.
Saturday
A slight chance of showers before 1pm. Mostly sunny, with a high near 75. Calm wind becoming north 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 51. North wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 80. Calm wind becoming north northeast 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 52. Northeast wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 79. Calm wind becoming east 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 56. East wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers. Partly sunny, with a high near 81. East northeast wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Johnston City IL
 37.85°N 88.94°W
Last Update:
2:31 am CDT Sep 3, 2025
Forecast Valid:
2am CDT Sep 3, 2025-6pm CDT Sep 9, 2025
 
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Additional Resources

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Chance of Precipitation