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

49°F

9°C

Humidity 50%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 13 Mar 8:55 pm CDT
Extended Forecast for

Energy IL

  • Tonight

    Tonight: Mostly clear, with a low around 37. North northwest wind around 5 mph becoming calm.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66. East wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 54. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 60%.

    High: 71 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 18 to 25 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 33. Breezy, with a west northwest wind 18 to 21 mph, with gusts as high as 32 mph.

    High: 33 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 16. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 26 mph.

    Low: 16 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 38. West northwest wind 7 to 9 mph.

    High: 38 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 29. South wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 37. North northwest wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 66. East wind 6 to 13 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Increasing clouds, with a low around 54. South wind 9 to 14 mph, with gusts as high as 23 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 60%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 26. Breezy, with a south southwest wind 18 to 25 mph becoming west northwest after midnight. Winds could gust as high as 38 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 33. Breezy, with a west northwest wind 18 to 21 mph, with gusts as high as 32 mph.
Monday Night
Mostly clear, with a low around 16. Blustery, with a west northwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 26 mph.
Tuesday
Sunny, with a high near 38. West northwest wind 7 to 9 mph.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 29. South wind 5 to 10 mph, with gusts as high as 18 mph.
Wednesday
Partly sunny, with a high near 58. South southwest wind 13 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 41. South southwest wind 6 to 8 mph.
Thursday
Sunny, with a high near 69. West southwest wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 47. South southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 71. South wind 6 to 9 mph becoming west in the afternoon.
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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 Mar 13, 2026
Forecast Valid:
8pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation