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.

Fog/Mist

37°F

3°C

Humidity 93%
Wind Speed NW 9 mph
Barometer 30.15 in
Dewpoint 36°F (2°C)
Visibility 2.00 mi
Wind Chill30°F (-1°C)
Last update 7 Dec 5:45 pm CST
Extended Forecast for

Energy IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle. Cloudy, with a steady temperature around 41. North wind around 9 mph.

    High: 41 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: A slight chance of drizzle before midnight, then a slight chance of snow showers between midnight and 2am. Cloudy, with a low around 27. North wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Drizzle then
    Slight Chance
    Snow Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 5 to 8 mph becoming calm in the afternoon.

    High: 38 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 27. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 11 to 15 mph, with gusts as high as 21 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Southwest wind around 16 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 52. Southwest wind 8 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 52 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 29. Northwest wind around 6 mph becoming calm.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 39. Northeast wind 5 to 8 mph becoming south southwest in the morning.

    High: 39 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of drizzle. Cloudy, with a steady temperature around 41. North wind around 9 mph.
Tonight
A slight chance of drizzle before midnight, then a slight chance of snow showers between midnight and 2am. Cloudy, with a low around 27. North wind 8 to 10 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 38. North wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 27. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 11 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Southwest wind around 16 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 52. Southwest wind 8 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 29. Northwest wind around 6 mph becoming calm.
Thursday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 39. Northeast wind 5 to 8 mph becoming south southwest in the morning.
Thursday Night
Mostly cloudy, with a low around 21. North northwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 31. Northwest wind around 11 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 24. Northwest wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 11. North northwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 28. West northwest wind 6 to 9 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89.03°W
Last Update:
5:11 pm CST Dec 7, 2025
Forecast Valid:
5pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
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