Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
97°F
36°C
| Humidity | 42% |
| Wind Speed | S 12 mph |
| Barometer | 30.01 in |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 104°F (40°C) |
| Last update | 1 Sep 4:45 pm CDT |
Extended Forecast for
Marion IL
Extreme Heat Warning until September 5, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
This Afternoon
High: 99 °F
Hot
Tonight
Low: 76 °F
Clear
Wednesday
High: 100 °F
Hot
Wednesday Night
Low: 77 °F
Clear
Thursday
High: 99 °F
Hot
Thursday Night
Low: 76 °F
Mostly Clear
Friday
High: 100 °F
Hot
Friday Night
Low: 75 °F
Mostly Clear
Detailed Forecast
This Afternoon
Sunny and hot, with a high near 99. South wind around 6 mph.
Tonight
Clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 106. Calm wind becoming south southwest 5 to 8 mph in the morning.
Wednesday Night
Clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny and hot, with a high near 99. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 76. Light south wind.
Friday
Sunny and hot, with a high near 100. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 75. Calm wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99. Calm wind becoming west northwest around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 72. Calm wind.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 96. Calm wind becoming north northeast 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 70. East northeast wind around 5 mph becoming calm in the evening.
Labor Day
Mostly sunny, with a high near 93. Calm wind becoming east southeast 5 to 7 mph in the morning.
Monday Night
Partly cloudy, with a low around 68. East southeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 93. South southwest wind 3 to 7 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
1:26 pm CDT Sep 1, 2026
5pm CDT Sep 1, 2026-6pm CDT Sep 8, 2026
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