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Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
64°F
18°C
| Humidity | 83% |
| Wind Speed | N 6 mph |
| Barometer | 30.26 in |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 23 Sep 9:45 am CDT |
Extended Forecast for
Simpson IL
Today
High: 73 °F
Mostly Cloudy
Tonight
Low: 57 °F
Decreasing
CloudsThursday
High: 80 °F
Partly Sunny
Thursday Night
Low: 58 °F
Partly Cloudy
Friday
High: 81 °F
Mostly Sunny
Friday Night
Low: 54 °F
Partly Cloudy
Saturday
High: 78 °F
Partly Sunny
Saturday Night
Low: 55 °F
Mostly Cloudy
Sunday
High: 81 °F
Mostly Sunny
Detailed Forecast
Today
Mostly cloudy, with a high near 73. North wind 5 to 8 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 80. Calm wind becoming north northeast around 6 mph in the morning.
Thursday Night
Partly cloudy, with a low around 58. Light northeast wind.
Friday
Mostly sunny, with a high near 81. Calm wind becoming northeast around 6 mph in the morning.
Friday Night
Partly cloudy, with a low around 54. Light northeast wind.
Saturday
Partly sunny, with a high near 78. Light east wind.
Saturday Night
Mostly cloudy, with a low around 55. Calm wind.
Sunday
Mostly sunny, with a high near 81. Calm wind.
Sunday Night
Partly cloudy, with a low around 56. Calm wind.
Monday
Sunny, with a high near 85. Light east wind.
Monday Night
Mostly clear, with a low around 59. Calm wind.
Tuesday
A chance of showers. Mostly sunny, with a high near 88. Calm wind becoming south around 6 mph in the morning.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Simpson IL
37.46°N 88.77°W
37.46°N 88.77°W
9:26 am CDT Sep 23, 2026
9am CDT Sep 23, 2026-6pm CDT Sep 29, 2026
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