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.

Partly Cloudy

31°C

88°F

Humidity 70%
Wind Speed SW 15 km/h
Barometer 29.91 in
Dewpoint 25°C (77°F)
Visibility 16 km
Heat Index38°C (100°F)
Last update 16 Jul 5:45 pm CDT
Extended Forecast for

Energy IL

Heat Advisory July 16, 06:33pm until July 16, 07:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory July 16, 06:33pm until July 16, 07:00pm

    NOW until 7:00pm Wed

    Heat Advisory

  • Tonight

    Low: 23 °C

    Mostly Clear

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 32. South southwest wind 10 to 13 km/h becoming west northwest in the morning.

    High: 32 °C

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Calm wind.

    Low: 23 °C

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a high near 30. Calm wind becoming south 5 to 10 km/h in the morning. Chance of precipitation is 70%.

    High: 30 °C

    T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 60%.

    Low: 23 °C

    T-storms
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 32. South southwest wind 10 to 14 km/h. Chance of precipitation is 40%.

    High: 32 °C

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 24. South southwest wind 8 to 11 km/h.

    Low: 24 °C

    Slight Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. Southwest wind around 11 km/h.

    High: 32 °C

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 23. South southwest wind 16 to 21 km/h decreasing to 5 to 10 km/h after midnight.
Thursday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 32. South southwest wind 10 to 13 km/h becoming west northwest in the morning.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 23. Calm wind.
Friday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly cloudy, with a high near 30. Calm wind becoming south 5 to 10 km/h in the morning. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 60%.
Saturday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 32. South southwest wind 10 to 14 km/h. Chance of precipitation is 40%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 24. South southwest wind 8 to 11 km/h.
Sunday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 32. Southwest wind around 11 km/h.
Sunday Night
A chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 24. South wind 5 to 8 km/h.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 33. South southwest wind 10 to 14 km/h.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 24. South wind 8 to 13 km/h.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 34. South southwest wind 10 to 14 km/h.
Tuesday Night
Mostly clear, with a low around 24. South wind 5 to 11 km/h.
Wednesday
Sunny, with a high near 34. South southwest wind 8 to 11 km/h.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Energy IL
 37.76°N 89°W
Last Update:
5:16 pm CDT Jul 16, 2025
Forecast Valid:
6pm CDT Jul 16, 2025-6pm CDT Jul 23, 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