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.

Partly Cloudy

82°F

28°C

Humidity 55%
Wind Speed N 8 mph
Barometer 30.13 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 28 Aug 12:47 pm CDT
Extended Forecast for

Energy IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. North northeast wind around 7 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. Light east northeast wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 91. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 91 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South wind around 6 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. South southwest wind 7 to 9 mph.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98. Southwest wind 3 to 8 mph.

    High: 98 °F

    Hot

Detailed Forecast

This Afternoon
Sunny, with a high near 88. North northeast wind around 7 mph.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. Light east northeast wind.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 91. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 68. Calm wind.
Sunday
Sunny, with a high near 95. Light south southeast wind becoming south southwest 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South wind around 6 mph.
Monday
Sunny and hot, with a high near 97. South southwest wind 7 to 9 mph.
Monday Night
Mostly clear, with a low around 74. South wind 3 to 6 mph.
Tuesday
Sunny and hot, with a high near 98. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 76. South wind 3 to 5 mph.
Wednesday
Sunny and hot, with a high near 97. Light south southwest wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 76. South wind 3 to 6 mph.
Thursday
Sunny and hot, with a high near 98. Southwest wind 3 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.78°N 89.03°W
Last Update:
1:26 pm CDT Aug 28, 2026
Forecast Valid:
1pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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Additional Resources

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Chance of Precipitation