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.

Fair

81°F

27°C

Humidity 70%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 5 Sep 10:15 pm CDT
Extended Forecast for

Energy IL

  • Tonight

    Tonight: Partly cloudy, with a low around 73. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 93. Northeast wind 6 to 11 mph.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. East northeast wind 5 to 9 mph.

    Low: 64 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 91. East northeast wind 5 to 8 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 66. East wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming south 5 to 7 mph in the morning.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. South southeast wind 5 to 9 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. Southwest wind 9 to 13 mph, with gusts as high as 18 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. South southwest wind around 6 mph.

    Low: 73 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 73. Calm wind becoming north northeast around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 93. Northeast wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 64. East northeast wind 5 to 9 mph.
Labor Day
Sunny, with a high near 91. East northeast wind 5 to 8 mph.
Monday Night
Clear, with a low around 66. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 96. Calm wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 73. South southeast wind 5 to 9 mph.
Wednesday
Sunny and hot, with a high near 99. Southwest wind 9 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. South southwest wind around 6 mph.
Thursday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 91. West southwest wind 5 to 8 mph becoming north northwest in the morning.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. North wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers. Mostly sunny, with a high near 89. East wind 3 to 6 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 64. Light south southeast wind.
Saturday
A slight chance of showers. Mostly sunny, with a high near 92. South southwest wind 3 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.78°N 89.03°W
Last Update:
9:16 pm CDT Sep 5, 2026
Forecast Valid:
10pm CDT Sep 5, 2026-6pm CDT Sep 12, 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