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.

Mostly Cloudy

36°F

2°C

Humidity 81%
Wind Speed SE 6 mph
Barometer 30.32 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 12 Feb 8:45 am CST
Extended Forecast for

Energy IL

  • Today

    Today: Partly sunny, with a high near 52. South southeast wind around 7 mph.

    High: 52 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 31. Southeast wind 3 to 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 57. Calm wind becoming south 5 to 8 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 37. Calm wind.

    Low: 37 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 60%.

    High: 53 °F

    Chance Rain
    then Rain
    Likely

  • Saturday Night

    Saturday Night: Rain. Low around 43. East wind 6 to 8 mph. Chance of precipitation is 90%.

    Low: 43 °F

    Rain

  • Sunday

    Sunday: A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 56. North northeast wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 56 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. North wind 5 to 7 mph becoming calm in the evening.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 61. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 61 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 52. South southeast wind around 7 mph.
Tonight
Partly cloudy, with a low around 31. Southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 57. Calm wind becoming south 5 to 8 mph.
Friday Night
Increasing clouds, with a low around 37. Calm wind.
Saturday
Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 43. East wind 6 to 8 mph. Chance of precipitation is 90%.
Sunday
A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 56. North northeast wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 37. North wind 5 to 7 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 61. Calm wind becoming south southeast 5 to 8 mph in the morning.
Monday Night
Mostly cloudy, with a low around 44. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 7 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 54. South southwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 67. Southwest wind 13 to 16 mph, with gusts as high as 24 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
9:12 am CST Feb 12, 2026
Forecast Valid:
9am CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation