


Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
74°F
23°C
Humidity | 96% |
Wind Speed | Calm |
Barometer | 30.04 in |
Dewpoint | 73°F (23°C) |
Visibility | 10.00 mi |
Last update | 15 Jul 1:35 am CDT |
Extended Forecast for
Marion IL
Overnight
Low: 72 °F
Slight Chance
T-stormsTuesday
High: 88 °F
Chance
Showers and
Patchy Fog
then T-storms
LikelyTuesday Night
Low: 73 °F
T-storms
Likely then
Chance
ShowersWednesday
High: 91 °F
Mostly Sunny
then Chance
T-stormsWednesday Night
Low: 76 °F
Slight Chance
T-stormsThursday
High: 92 °F
Sunny then
Chance
T-stormsThursday Night
Low: 74 °F
Chance
T-stormsFriday
High: 89 °F
Chance
T-stormsFriday Night
Low: 75 °F
Slight Chance
T-storms
Detailed Forecast
Overnight
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 72. Calm wind.
Tuesday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 88. Calm wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely before 4am, then a slight chance of showers. Mostly cloudy, with a low around 73. Light south wind. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Southwest wind 3 to 7 mph.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Southwest wind 3 to 8 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening.
Friday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. Calm wind becoming west southwest around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 76. South wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Southwest wind 3 to 6 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. South southwest wind around 5 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92. South southwest wind 3 to 7 mph.
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ABOUT THIS FORECAST
Point Forecast:
Marion IL
37.73°N 88.92°W
37.73°N 88.92°W
11:03 pm CDT Jul 14, 2025
1am CDT Jul 15, 2025-6pm CDT Jul 21, 2025