Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

84°F

29°C

Humidity 89%
Wind Speed W 5 mph
Barometer 29.97 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 26 Jul 8:45 am CDT
Extended Forecast for

2 Miles ENE Frankfort Heights IL

Extreme Heat Warning July 26, 11:00am until July 28, 07:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Today

    Today: A 20 percent chance of showers and thunderstorms before 11am.  Mostly sunny, with a high near 95. Heat index values as high as 107. Light and variable wind.

    High: 95 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 77. Light south wind.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers and thunderstorms between 1pm and 2pm.  Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 9 mph in the morning.  Chance of precipitation is 20%.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southwest wind 7 to 9 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 95. Northwest wind 6 to 10 mph.

    High: 95 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast  after midnight.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 90. Light north northeast wind increasing to 5 to 9 mph in the morning.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65. North wind around 6 mph becoming calm  in the evening.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 90 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 95. Heat index values as high as 107. Light and variable wind.
Tonight
Partly cloudy, with a low around 77. Light south wind.
Monday
A slight chance of showers and thunderstorms between 1pm and 2pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Light and variable wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 79. South southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 95. Northwest wind 6 to 10 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 70. North wind 5 to 9 mph becoming light northeast after midnight.
Wednesday
Sunny, with a high near 90. Light north northeast wind increasing to 5 to 9 mph in the morning.
Wednesday Night
Clear, with a low around 65. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming east northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 67. Light and variable wind.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Southeast wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 9 mph in the morning.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Frankfort Heights IL
 37.93°N 88.82°W
9:16 am CDT Jul 26, 2026
9am CDT Jul 26, 2026-6pm CDT Aug 1, 2026
 
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Additional Resources

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