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

64°F

18°C

Humidity 83%
Wind Speed S 7 mph
Barometer 29.91 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 10 Feb 4:45 pm CST
Extended Forecast for

Energy IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 64. South wind around 7 mph.

    High: 64 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between 8pm and 9pm. Mostly cloudy, with a low around 30. Southwest wind 6 to 10 mph becoming north in the evening.

    Low: 30 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. North wind 5 to 8 mph.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 28. Calm wind.

    Low: 28 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 47 °F

    Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 31. East wind around 6 mph becoming calm in the evening.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 52. Calm wind becoming southeast around 6 mph.

    High: 52 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Light east southeast wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers. Cloudy, with a high near 52. East southeast wind 3 to 8 mph.

    High: 52 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly cloudy, with a steady temperature around 64. South wind around 7 mph.
Tonight
A 30 percent chance of showers, mainly between 8pm and 9pm. Mostly cloudy, with a low around 30. Southwest wind 6 to 10 mph becoming north in the evening.
Wednesday
Mostly sunny, with a high near 48. North wind 5 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 28. Calm wind.
Thursday
Cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the afternoon.
Thursday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 31. East wind around 6 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 52. Calm wind becoming southeast around 6 mph.
Friday Night
Mostly cloudy, with a low around 36. Light east southeast wind.
Saturday
A chance of showers. Cloudy, with a high near 52. East southeast wind 3 to 8 mph.
Saturday Night
Showers likely. Cloudy, with a low around 41. East wind around 8 mph.
Sunday
A chance of showers. Partly sunny, with a high near 55. North wind 8 to 11 mph.
Sunday Night
Mostly clear, with a low around 36. North wind 5 to 7 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 60. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South southeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 63. South wind 7 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:
5:32 pm CST Feb 10, 2026
Forecast Valid:
5pm CST Feb 10, 2026-6pm CST Feb 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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