Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
82°F
28°C
| Humidity | 40% |
| Wind Speed | S 6 mph |
| Barometer | 29.98 in |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 11 Oct 3:45 pm CDT |
Extended Forecast for
Marion IL
This Afternoon
High: 83 °F
Sunny
Tonight
Low: 61 °F
Mostly Clear
Columbus Day
High: 91 °F
Sunny
Monday Night
Low: 66 °F
Clear
Tuesday
High: 92 °F
Sunny
Tuesday Night
Low: 70 °F
Mostly Clear
then Slight
Chance
T-stormsWednesday
High: 87 °F
Showers
Wednesday Night
Low: 65 °F
Showers
LikelyThursday
High: 82 °F
Chance
Showers then
Chance
T-storms
Detailed Forecast
This Afternoon
Sunny, with a high near 83. West northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 61. Calm wind becoming south southwest around 5 mph after midnight.
Columbus Day
Sunny, with a high near 91. Southwest wind 5 to 13 mph, with gusts as high as 18 mph.
Monday Night
Clear, with a low around 66. South southwest wind around 7 mph.
Tuesday
Sunny, with a high near 92. Southwest wind 6 to 11 mph.
Tuesday Night
A slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South southwest wind around 6 mph. Chance of precipitation is 20%.
Wednesday
Showers and possibly a thunderstorm. High near 87. South southwest wind 3 to 7 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Calm wind.
Thursday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming south 5 to 10 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. South southwest wind 6 to 10 mph becoming west northwest after midnight.
Friday
Partly sunny, with a high near 69. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 40. North northwest wind 10 to 18 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 60. North wind 10 to 14 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.95°W
37.73°N 88.95°W
2:01 pm CDT Oct 11, 2026
4pm CDT Oct 11, 2026-6pm CDT Oct 17, 2026
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