Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
76°F
24°C
| Humidity | 72% |
| Wind Speed | N 5 mph |
| Barometer | 29.84 in |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 2 Aug 7:35 pm CDT |
Extended Forecast for
Marion IL
Tonight
Low: 64 °F
Mostly Clear
then Patchy
FogMonday
High: 86 °F
Patchy Fog
then SunnyMonday Night
Low: 64 °F
Mostly Clear
Tuesday
High: 88 °F
Becoming
SunnyTuesday Night
Low: 65 °F
Mostly Clear
Wednesday
High: 90 °F
Sunny
Wednesday Night
Low: 69 °F
Mostly Clear
Thursday
High: 90 °F
Slight Chance
T-stormsThursday Night
Low: 70 °F
Chance
T-storms
Detailed Forecast
Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 64. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming north northeast around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 64. Calm wind.
Tuesday
Partly sunny through mid morning, then becoming sunny, with a high near 88. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 90. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 69. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Calm wind becoming south southwest 5 to 7 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Light south wind.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 6 mph in the morning.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Calm wind.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Calm wind becoming south southwest around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 71. Light south wind.
Sunday
Mostly sunny, with a high near 92. South southwest wind 3 to 8 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
7:11 pm CDT Aug 2, 2026
7pm CDT Aug 2, 2026-6pm CDT Aug 9, 2026
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