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

45°F

7°C

Humidity 95%
Wind Speed E 7 mph
Barometer 29.90 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 Feb 8:35 pm CST
Extended Forecast for

Energy IL

  • Tonight

    Tonight: Showers, mainly after 9pm. Low around 45. Northeast wind 6 to 8 mph. Chance of precipitation is 100%.

    Low: 45 °F

    Showers
    Likely then
    Showers

  • Sunday

    Sunday: Showers likely, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 58. North northeast wind 5 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 36. North wind 5 to 7 mph becoming calm in the evening.

    Low: 36 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62. Calm wind becoming south 5 to 9 mph in the morning.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind around 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 66. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 66 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 56. South wind around 18 mph, with gusts as high as 30 mph.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 72. Southwest wind 14 to 17 mph, with gusts as high as 28 mph.

    High: 72 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. South southwest wind 7 to 13 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers, mainly after 9pm. Low around 45. Northeast wind 6 to 8 mph. Chance of precipitation is 100%.
Sunday
Showers likely, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 58. North northeast wind 5 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 36. North wind 5 to 7 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 62. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 66. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 56. South wind around 18 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a high near 72. Southwest wind 14 to 17 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 50. South southwest wind 7 to 13 mph, with gusts as high as 18 mph.
Thursday
A chance of showers, mainly after noon. Partly sunny, with a high near 71. South southwest wind 7 to 15 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 44. South southwest wind 7 to 11 mph becoming west after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 57. West wind 7 to 10 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 32. Northwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 50. Northwest wind 6 to 10 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:
8:52 pm CST Feb 14, 2026
Forecast Valid:
8pm CST Feb 14, 2026-6pm CST Feb 21, 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