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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fog

75°F

24°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 75°F (24°C)
Visibility 0.50 mi
Last update 30 Jul 6:45 am CDT
Extended Forecast for

Benton ILSimilar City Names

Extreme Heat Warning July 30, 07:03am until July 30, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 30, 07:03am until July 30, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Today

    High: 96 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 10pm. Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: 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. Partly sunny, with a high near 90. Light and variable wind becoming north 6 to 11 mph in the morning. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    Showers then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 67. North northeast wind 7 to 10 mph. Chance of precipitation is 60%.

    Low: 67 °F

    T-storms
    Likely then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 82. North northeast wind 10 to 14 mph, with gusts as high as 18 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North northeast wind 7 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Northeast wind 7 to 10 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 61. Northeast wind 3 to 7 mph.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming east around 5 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms after 10pm. Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.
Thursday
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. Partly sunny, with a high near 90. Light and variable wind becoming north 6 to 11 mph in the morning. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 67. North northeast wind 7 to 10 mph. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 82. North northeast wind 10 to 14 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 62. North northeast wind 7 to 10 mph.
Saturday
Sunny, with a high near 82. Northeast wind 7 to 10 mph.
Saturday Night
Mostly clear, with a low around 61. Northeast wind 3 to 7 mph.
Sunday
Sunny, with a high near 86. East northeast wind 3 to 6 mph.
Sunday Night
Partly cloudy, with a low around 66. East northeast wind around 5 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Calm wind becoming south southeast around 6 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming west northwest 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Benton ILSimilar City Names
 38°N 88.93°W
Last Update:
5:46 am CDT Jul 30, 2025
Forecast Valid:
7am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
 
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