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.

Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 29.95 in
Dewpoint 72°F (22°C)
Visibility 3.00 mi
Last update 11 Sep 5:15 am CDT
Extended Forecast for

Spillertown IL

  • Today

    Today: A 20 percent chance of showers and thunderstorms, mainly between 10am and 3pm. Mostly cloudy, with a high near 84. Light and variable wind.

    High: 84 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. Light and variable wind.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 90. South wind 5 to 9 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 70. South southeast wind around 6 mph.

    Low: 70 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 6 to 9 mph.

    High: 93 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms, mainly between 10am and 3pm. Mostly cloudy, with a high near 84. Light and variable wind.
Tonight
A 40 percent chance of showers, mainly after 9pm. Mostly cloudy, with a low around 67. Calm wind.
Saturday
A slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 67. Calm wind.
Sunday
Mostly sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 67. Light and variable wind.
Monday
Sunny, with a high near 90. South wind 5 to 9 mph.
Monday Night
Clear, with a low around 70. South southeast wind around 6 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 69. Light southeast wind.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Southwest wind 3 to 7 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Light and variable wind.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Light and variable wind becoming west 5 to 9 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spillertown IL
 37.76°N 88.92°W
Last Update:
5:21 am CDT Sep 11, 2026
Forecast Valid:
5am CDT Sep 11, 2026-6pm CDT Sep 17, 2026
 
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Additional Resources

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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