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

67°F

19°C

Humidity 60%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 26 Mar 12:35 am CDT
Extended Forecast for

Energy IL

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 66. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 66 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 29 mph.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 46. South southwest wind 11 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.

    Low: 46 °F

    Partly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 56 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 33. North wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56. East wind around 7 mph.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. Southeast wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 67. South wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 66. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 85. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 29 mph.
Thursday Night
Showers likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 46. South southwest wind 11 to 17 mph becoming west northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Friday
Showers likely and possibly a thunderstorm. Cloudy, then gradually becoming mostly sunny, with a high near 56. North wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday Night
Mostly clear, with a low around 33. North wind 6 to 14 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 56. East wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 39. Southeast wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 67. South wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 54. South wind around 10 mph, with gusts as high as 18 mph.
Monday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 76. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 60. South southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South southwest wind around 11 mph, with gusts as high as 20 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. South southwest wind 13 to 17 mph, with gusts as high as 28 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
12:51 am CDT Mar 26, 2026
Forecast Valid:
12am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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