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

77°F

25°C

Humidity 61%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 25 May 3:45 pm CDT
Extended Forecast for

Energy IL

  • Memorial Day

    Memorial Day: Mostly cloudy, with a high near 79. East northeast wind around 8 mph.

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming west southwest around 6 mph.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Light northeast wind becoming east northeast 5 to 10 mph in the morning.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 6 to 8 mph.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Memorial Day
Mostly cloudy, with a high near 79. East northeast wind around 8 mph.
Tonight
Mostly cloudy, with a low around 63. East northeast wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 65. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 81. Calm wind becoming west southwest around 6 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 20%.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 82. Light northeast wind becoming east northeast 5 to 10 mph in the morning.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 65. East northeast wind 3 to 6 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 76. East northeast wind 6 to 8 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 62. East northeast wind 5 to 7 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. Northeast wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 60. Northeast wind 6 to 9 mph.
Sunday
Mostly sunny, with a high near 79. Northeast wind 7 to 11 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
1:26 pm CDT May 25, 2026
Forecast Valid:
3pm CDT May 25, 2026-6pm CDT May 31, 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