


Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
77°F
25°C
Humidity | 66% |
Wind Speed | E 3 mph |
Barometer | 30.01 in |
Dewpoint | 65°F (18°C) |
Visibility | 10.00 mi |
Heat Index | 79°F (26°C) |
Last update | 12 Jun 8:15 pm CDT |
Extended Forecast for
Marion IL
Tonight
Low: 69 °F
Slight Chance
T-storms then
Chance
T-stormsFriday
High: 82 °F
Showers
Likely then
T-stormsFriday Night
Low: 70 °F
Showers
LikelySaturday
High: 81 °F
Chance
Showers then
T-stormsSaturday Night
Low: 70 °F
Chance
ShowersSunday
High: 85 °F
Chance
Showers then
Chance
T-stormsSunday Night
Low: 70 °F
Slight Chance
T-stormsMonday
High: 86 °F
Slight Chance
Showers then
Chance
T-stormsMonday Night
Low: 71 °F
Chance
T-storms
Detailed Forecast
Tonight
A 50 percent chance of showers and thunderstorms, mainly after midnight. Increasing clouds, with a low around 69. Calm wind.
Friday
Showers and thunderstorms likely before 2pm, then showers and possibly a thunderstorm between 2pm and 3pm, then showers and thunderstorms likely after 3pm. High near 82. Light south southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 80%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 81. Southwest wind 3 to 6 mph. Chance of precipitation is 80%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 30%.
Sunday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 85. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 20%.
Monday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Light southwest wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South southwest wind 5 to 8 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 6 mph.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 75. South southwest wind 6 to 8 mph.
Juneteenth
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. West southwest wind 6 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
7:31 pm CDT Jun 12, 2025
8pm CDT Jun 12, 2025-6pm CDT Jun 19, 2025