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

49°F

9°C

Humidity 96%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 6 Jan 10:15 pm CST
Extended Forecast for

Energy IL

  • Tonight

    Tonight: Clear, with a low around 37. Calm wind.

    Low: 37 °F

    Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 58. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 58 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. South southeast wind 3 to 7 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Showers likely, mainly after noon. Cloudy, with a high near 65. South southeast wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.

    High: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 55. South wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 55 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers. Mostly cloudy, with a high near 60. Southwest wind 8 to 10 mph becoming north northeast in the afternoon.

    High: 60 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 44. Northeast wind 6 to 9 mph becoming west after midnight.

    Low: 44 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 50. West northwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 50 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. West wind 8 to 10 mph.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 37. Calm wind.
Wednesday
Mostly sunny, with a high near 58. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 45. South southeast wind 3 to 7 mph.
Thursday
Showers likely, mainly after noon. Cloudy, with a high near 65. South southeast wind 8 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Low around 55. South wind 9 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 60. Southwest wind 8 to 10 mph becoming north northeast in the afternoon.
Friday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 44. Northeast wind 6 to 9 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 50. West northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 28. West wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 38. West northwest wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 26. West northwest wind around 5 mph becoming calm.
Monday
Sunny, with a high near 47. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 31. Southwest wind around 7 mph.
Tuesday
Partly sunny, with a high near 49. West southwest wind 6 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
10:06 pm CST Jan 6, 2026
Forecast Valid:
10pm CST Jan 6, 2026-6pm CST Jan 13, 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