National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

61°F

16°C

Humidity 88%
Wind Speed N 9 mph
Barometer 30.13 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 21 May 7:47 am CDT
Extended Forecast for

Energy IL

  • Today

    Today: Mostly cloudy, with a high near 72. Northeast wind 7 to 10 mph.

    High: 72 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 59. East northeast wind 6 to 10 mph.

    Low: 59 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 73. East northeast wind 8 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.

    High: 73 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 62. South southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. West wind around 7 mph.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Chance
    Showers

  • Memorial Day

    Memorial Day: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming east around 6 mph in the morning.

    High: 81 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 72. Northeast wind 7 to 10 mph.
Tonight
A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 59. East northeast wind 6 to 10 mph.
Friday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. High near 73. East northeast wind 8 to 10 mph becoming south southwest in the afternoon. Chance of precipitation is 90%.
Friday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 62. South southeast wind 6 to 9 mph becoming west after midnight. Chance of precipitation is 70%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. West wind around 7 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south southwest around 6 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Calm wind.
Memorial Day
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming east around 6 mph in the morning.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. South southeast wind 3 to 8 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Southeast wind 3 to 6 mph.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. South southeast wind 5 to 8 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:
6:16 am CDT May 21, 2026
Forecast Valid:
7am CDT May 21, 2026-6pm CDT May 27, 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