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.

Overcast

75°F

24°C

Humidity 83%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 4 Aug 10:45 am CDT
Extended Forecast for

Spillertown IL

  • Today

    Today: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. East southeast wind 3 to 5 mph.

    High: 83 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 4am. Partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Light east southeast wind. Chance of precipitation is 30%.

    High: 84 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Light east southeast wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Light east southeast wind.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 69. Calm wind.

    Low: 69 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 91. Calm wind becoming south southeast around 6 mph in the morning.

    High: 91 °F

    Sunny

Detailed Forecast

Today
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 83. East southeast wind 3 to 5 mph.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers after 4am. Partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 30%.
Tuesday
A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Light east southeast wind. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 68. Calm wind.
Wednesday
Sunny, with a high near 88. Light east southeast wind.
Wednesday Night
Mostly clear, with a low around 68. Calm wind.
Thursday
Sunny, with a high near 90. Light east southeast wind.
Thursday Night
Clear, with a low around 69. Calm wind.
Friday
Sunny, with a high near 91. Calm wind becoming south southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 72. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. South wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 73. South southeast wind 3 to 5 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. South southwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spillertown IL
 37.76°N 88.92°W
Last Update:
9:24 am CDT Aug 4, 2025
Forecast Valid:
11am CDT Aug 4, 2025-6pm CDT Aug 10, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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