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.

Fair

73°F

23°C

Humidity 57%
Wind Speed S 5 mph
Barometer 29.87 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 Mar 11:45 am CDT
Extended Forecast for

Energy IL

  • Today

    Today: Sunny, with a high near 85. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. South southwest wind 6 to 9 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 40. North wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 57. North northeast wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Northeast wind 5 to 8 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. Southeast wind around 6 mph.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. Light east southeast wind.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73. Light south wind increasing to 5 to 10 mph in the morning.

    High: 73 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 85. Calm wind becoming south southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 62. South southwest wind 6 to 9 mph.
Sunday
Sunny, with a high near 83. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 40. North wind 11 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 57. North northeast wind 11 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind 5 to 8 mph.
Tuesday
Partly sunny, with a high near 63. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 45. Light east southeast wind.
Wednesday
Partly sunny, with a high near 73. Light south wind increasing to 5 to 10 mph in the morning.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 57. South wind around 8 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 81. Southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. South southwest wind 10 to 13 mph becoming north after midnight. Winds could gust as high as 21 mph.
Friday
A chance of showers. Partly sunny, with a high near 62. North northeast wind 11 to 14 mph, with gusts as high as 21 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
11:06 am CDT Mar 21, 2026
Forecast Valid:
11am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
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