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Hazardous Weather Conditions

Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Partly Cloudy

93°F

34°C

Humidity 53%
Wind Speed NE 5 mph
Barometer 30.04 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index103°F (39°C)
Last update 16 Aug 5:45 pm CDT
Extended Forecast for

Christopher IL

Heat Advisory August 16, 06:21pm until August 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 16, 06:21pm until August 19, 07:00pm

    NOW until 7:00pm Tue

    Heat Advisory

  • Tonight

    Low: 74 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind becoming south southeast around 5 mph in the afternoon.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Light and variable wind.

    Low: 74 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. East wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Northeast wind around 6 mph becoming calm in the evening.

    Low: 73 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Light north wind increasing to 5 to 10 mph in the morning.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 74. Light south southeast wind.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Light and variable wind.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 109. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 76. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 100. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73. Northeast wind around 6 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Light north wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 68. North northeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 87. North northeast wind 6 to 10 mph.
Thursday Night
Partly cloudy, with a low around 67. Northeast wind 5 to 8 mph becoming calm in the evening.
Friday
Sunny, with a high near 90. Northeast wind 3 to 7 mph.
Friday Night
Mostly clear, with a low around 66. Northeast wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93. Calm wind becoming north around 6 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Christopher IL
 37.98°N 89.05°W
Last Update:
5:45 pm CDT Aug 16, 2025
Forecast Valid:
6pm CDT Aug 16, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation