Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
43°F
6°C
| Humidity | 100% |
| Wind Speed | Vrbl 1 mph |
| Barometer | 30.38 in |
| Dewpoint | 43°F (6°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 1:55 am CDT |
Extended Forecast for
Simpson IL
Overnight
Low: 39 °F
Clear
Monday
High: 74 °F
Sunny
Monday Night
Low: 43 °F
Mostly Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 42 °F
Mostly Clear
Wednesday
High: 77 °F
Sunny
Wednesday Night
Low: 44 °F
Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 46 °F
Clear
Detailed Forecast
Overnight
Clear, with a low around 39. Calm wind.
Monday
Sunny, with a high near 74. Light and variable wind.
Monday Night
Mostly clear, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 75. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 42. Calm wind.
Wednesday
Sunny, with a high near 77. Light north northeast wind.
Wednesday Night
Clear, with a low around 44. Calm wind.
Thursday
Sunny, with a high near 78. Light northeast wind.
Thursday Night
Clear, with a low around 46. Calm wind.
Friday
Sunny, with a high near 77. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 46. Calm wind.
Saturday
Sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 49. Calm wind.
Sunday
Mostly sunny, with a high near 79. Calm wind becoming southwest around 5 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Simpson IL
37.46°N 88.77°W
37.46°N 88.77°W
1:25 am CDT Oct 19, 2026
2am CDT Oct 19, 2026-6pm CDT Oct 25, 2026
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