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

72°F

22°C

Humidity 69%
Wind Speed SW 9 mph
Barometer 30.00 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 14 Apr 4:35 am CDT
Extended Forecast for

Energy IL

  • Today

    Today: Mostly sunny, with a high near 85. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 28 mph.

    High: 85 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: A 20 percent chance of showers between 3am and 5am. Increasing clouds, with a low around 68. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Low: 68 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South southwest wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 64 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 78. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 78 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 60. South southwest wind 5 to 9 mph becoming light south after midnight. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. South wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 75. South southwest wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 75 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 85. Breezy, with a south southwest wind 13 to 20 mph, with gusts as high as 28 mph.
Tonight
A 20 percent chance of showers between 3am and 5am. Increasing clouds, with a low around 68. South southwest wind 11 to 17 mph, with gusts as high as 26 mph.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. South southwest wind 11 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm. High near 78. South southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Thursday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly clear, with a low around 60. South southwest wind 5 to 9 mph becoming light south after midnight. Chance of precipitation is 20%.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South southwest wind 5 to 13 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. South wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 75. South southwest wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 42. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 65. West northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Mostly clear, with a low around 41. Northwest wind 5 to 8 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 69. Light east wind becoming southeast 5 to 9 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
1:26 am CDT Apr 14, 2026
Forecast Valid:
4am CDT Apr 14, 2026-6pm CDT Apr 20, 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