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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Overcast

81°F

27°C

Humidity 84%
Wind Speed S 16 G 23 mph
Barometer 29.87 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 18 Jun 9:45 am CDT
Extended Forecast for

Carterville IL

Tornado Watch until June 18, 04:00pm
Lake Wind Advisory June 18, 11:00am until June 18, 07:00pm
Click here for hazard details and duration
Tornado Watch
Lake Wind Advisory
  •  
    Tornado Watch until June 18, 04:00pm

    NOW until 4:00pm Wed

    Tornado Watch

  • Today

    High: 88 °F

    Slight Chance
    T-storms then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 4am. Some of the storms could be severe. Low around 70. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 70 °F

    Severe
    Thunderstorms
    then Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly cloudy through mid morning, then gradual clearing, with a high near 85. Northwest wind 5 to 7 mph.

    High: 85 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.

    High: 89 °F

    Sunny

  • Friday Night

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

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 6 to 8 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms likely, mainly between 3pm and 4pm. Some of the storms could be severe. Partly sunny, with a high near 88. Southwest wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Tonight
Showers and thunderstorms before 2am, then a slight chance of showers between 2am and 4am. Some of the storms could be severe. Low around 70. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Juneteenth
Mostly cloudy through mid morning, then gradual clearing, with a high near 85. Northwest wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 67. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 73. South wind around 6 mph.
Saturday
Sunny, with a high near 92. South wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 6 to 8 mph.
Sunday
Sunny, with a high near 93. South southwest wind 6 to 8 mph.
Sunday Night
Clear, with a low around 75. South wind 3 to 6 mph.
Monday
Sunny, with a high near 93. South wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 74. South wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Sunny, with a high near 92. Calm wind becoming south around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carterville IL
 37.76°N 89.09°W
Last Update:
10:01 am CDT Jun 18, 2025
Forecast Valid:
10am CDT Jun 18, 2025-6pm CDT Jun 24, 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