Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
65°F
18°C
| Humidity | 98% |
| Wind Speed | Calm |
| Barometer | 30.06 in |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 5 Aug 2:15 am CDT |
Extended Forecast for
4 Miles ESE Marion IL
Overnight
Low: 64 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny
Wednesday Night
Low: 71 °F
Increasing
CloudsThursday
High: 88 °F
Chance
Showers then
Slight Chance
T-stormsThursday Night
Low: 72 °F
Partly Cloudy
then Chance
T-stormsFriday
High: 91 °F
Chance
T-stormsFriday Night
Low: 71 °F
Chance
T-storms then
Showers
LikelySaturday
High: 91 °F
Mostly Sunny
Saturday Night
Low: 71 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly clear, with a low around 64. Calm wind.
Wednesday
Sunny, with a high near 92. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 71. Calm wind.
Thursday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Increasing clouds, with a high near 88. Calm wind becoming west southwest around 6 mph in the morning.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Calm wind.
Friday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 91. Calm wind becoming southwest 5 to 8 mph in the morning.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. Light south southwest wind. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 71. Calm wind.
Sunday
Sunny, with a high near 93. Light south wind becoming south southwest 5 to 9 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South wind 5 to 7 mph.
Monday
Sunny, with a high near 95. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 75. South southwest wind 8 to 10 mph.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Southwest wind 8 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles ESE Marion IL
37.71°N 88.86°W
37.71°N 88.86°W
1:26 am CDT Aug 5, 2026
2am CDT Aug 5, 2026-6pm CDT Aug 11, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
