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Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Partly Cloudy
84°F
29°C
| Humidity | 37% |
| Wind Speed | NW 8 mph |
| Barometer | 30.00 in |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 19 Jun 4:45 pm CDT |
Extended Forecast for
5 Miles W Simpson IL
Tonight
Low: 63 °F
Mostly Cloudy
Saturday
High: 84 °F
Mostly Sunny
Saturday Night
Low: 67 °F
Partly Cloudy
then Slight
Chance
ShowersSunday
High: 84 °F
Showers
Sunday Night
Low: 70 °F
Showers
Monday
High: 81 °F
Chance
T-stormsMonday Night
Low: 63 °F
Partly Cloudy
Tuesday
High: 80 °F
Mostly Sunny
Tuesday Night
Low: 63 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 63. Calm wind.
Saturday
Mostly sunny, with a high near 84. Light and variable wind.
Saturday Night
A 10 percent chance of showers after 5am. Partly cloudy, with a low around 67. Calm wind.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Light south southeast wind becoming south southwest 6 to 11 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm. Low around 70. South southwest wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%.
Monday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 81. West southwest wind around 9 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Partly cloudy, with a low around 63. North wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 80. Light north wind.
Tuesday Night
Partly cloudy, with a low around 63. Calm wind.
Wednesday
Sunny, with a high near 82. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 63. Calm wind.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Calm wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles W Simpson IL
37.49°N 88.85°W
37.49°N 88.85°W
3:01 pm CDT Jun 19, 2026
5pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
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