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

46°F

8°C

Humidity 61%
Wind Speed N 15 mph
Barometer 30.15 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 1 Mar 12:55 am CST
Extended Forecast for

Energy IL

  • Overnight

    Overnight: Partly cloudy, with a low around 35. North northeast wind 9 to 11 mph.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 51. Northeast wind 10 to 13 mph, with gusts as high as 18 mph.

    High: 51 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 11pm. Low around 37. East northeast wind around 10 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Showers
    Likely then
    Showers

  • Monday

    Monday: Showers, mainly before noon. High near 48. East wind 7 to 10 mph. Chance of precipitation is 80%.

    High: 48 °F

    Showers then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 43. East wind 5 to 9 mph becoming south after midnight. Chance of precipitation is 60%.

    Low: 43 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 70. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.

    High: 70 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 57. South wind 7 to 10 mph.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 71 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind 8 to 10 mph.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. North northeast wind 9 to 11 mph.
Sunday
Partly sunny, with a high near 51. Northeast wind 10 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Showers, mainly after 11pm. Low around 37. East northeast wind around 10 mph. Chance of precipitation is 90%.
Monday
Showers, mainly before noon. High near 48. East wind 7 to 10 mph. Chance of precipitation is 80%.
Monday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 43. East wind 5 to 9 mph becoming south after midnight. Chance of precipitation is 60%.
Tuesday
A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 70. South southwest wind 10 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A 40 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 57. South wind 7 to 10 mph.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 71. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. South southwest wind 8 to 10 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 71. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South wind 7 to 9 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 74. South southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 55. South wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely. Cloudy, with a high near 67. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
12:26 am CST Mar 1, 2026
Forecast Valid:
1am CST Mar 1, 2026-6pm CST Mar 7, 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