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.

Overcast

39°F

4°C

Humidity 56%
Wind Speed S 17 mph
Barometer 30.11 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 18 Mar 8:47 am CDT
Extended Forecast for

Energy IL

  • Today

    Today: A 20 percent chance of snow showers before 10am. Cloudy early, then gradual clearing, with a high near 60. Southwest wind 13 to 17 mph, with gusts as high as 24 mph.

    High: 60 °F

    Slight Chance
    Snow Showers
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 42. South wind 5 to 7 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 71. South wind 5 to 8 mph becoming west southwest in the afternoon.

    High: 71 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. Light and variable wind.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. South southwest wind around 6 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. West wind 5 to 8 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 55. South southwest wind 6 to 8 mph.

    Low: 55 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 77. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    High: 77 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of snow showers before 10am. Cloudy early, then gradual clearing, with a high near 60. Southwest wind 13 to 17 mph, with gusts as high as 24 mph.
Tonight
Increasing clouds, with a low around 42. South wind 5 to 7 mph.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 71. South wind 5 to 8 mph becoming west southwest in the afternoon.
Thursday Night
Mostly clear, with a low around 47. Light and variable wind.
Friday
Sunny, with a high near 76. Calm wind becoming southwest 5 to 8 mph in the morning.
Friday Night
Partly cloudy, with a low around 53. South southwest wind around 6 mph.
Saturday
Sunny, with a high near 79. West wind 5 to 8 mph.
Saturday Night
Clear, with a low around 55. South southwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 77. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 40. North northeast wind around 14 mph, with gusts as high as 21 mph.
Monday
Mostly cloudy, with a high near 55. Northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 37. Northeast wind 6 to 8 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 61. East wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
9:36 am CDT Mar 18, 2026
Forecast Valid:
9am CDT Mar 18, 2026-6pm CDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation