Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
A Few Clouds
84°F
29°C
| Humidity | 48% |
| Wind Speed | N 12 mph |
| Barometer | 30.00 in |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 27 Aug 5:45 pm CDT |
Extended Forecast for
Simpson IL
Tonight
Low: 64 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 62 °F
Clear
Saturday
High: 89 °F
Sunny
Saturday Night
Low: 65 °F
Mostly Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 69 °F
Mostly Clear
Monday
High: 94 °F
Sunny
Monday Night
Low: 72 °F
Mostly Clear
Detailed Forecast
Tonight
Mostly clear, with a low around 64. Light north wind.
Friday
Sunny, with a high near 87. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Clear, with a low around 62. Calm wind.
Saturday
Sunny, with a high near 89. Calm wind.
Saturday Night
Mostly clear, with a low around 65. Calm wind.
Sunday
Sunny, with a high near 93. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 69. Calm wind.
Monday
Sunny, with a high near 94. Calm wind becoming south southwest 5 to 8 mph in the morning.
Monday Night
Mostly clear, with a low around 72. Calm wind.
Tuesday
Sunny, with a high near 95. Calm wind becoming southwest 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 73. Calm wind.
Wednesday
Sunny, with a high near 95. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 74. Calm wind.
Thursday
Sunny and hot, with a high near 97. Calm wind becoming southwest 5 to 7 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
4:16 pm CDT Aug 27, 2026
6pm CDT Aug 27, 2026-6pm CDT Sep 3, 2026
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