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Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Partly Cloudy
81°F
27°C
| Humidity | 74% |
| Wind Speed | S 12 mph |
| Barometer | 29.87 in |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 21 Jun 10:45 am CDT |
Extended Forecast for
3 Miles WNW Whiteash IL
Lake Wind Advisory June 21, 12:00pm until June 21, 07:00pm
Today

High: 89 °F
Chance
T-stormsTonight

Low: 70 °F
Heavy Rain
Monday
High: 80 °F
Chance
T-storms then
Partly SunnyMonday Night

Low: 62 °F
Partly Cloudy
Tuesday

High: 84 °F
Sunny
Tuesday Night

Low: 64 °F
Mostly Clear
Wednesday
High: 86 °F
Mostly Sunny
then Chance
T-stormsWednesday Night
Low: 67 °F
Slight Chance
T-storms then
Chance
ShowersThursday
High: 87 °F
Mostly Sunny
then Chance
T-storms
Detailed Forecast
Today
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 89. South wind 9 to 16 mph, with gusts as high as 25 mph.
Tonight
Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 4am, then a chance of showers and thunderstorms after 4am. Some of the storms could produce heavy rainfall. Low around 70. South southwest wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 80. Northwest wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 62. North wind 5 to 9 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 84. Light northeast wind.
Tuesday Night
Mostly clear, with a low around 64. Light north wind.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Light south wind.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 67. Calm wind.
Thursday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Calm wind becoming west southwest around 5 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light and variable wind.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming south southwest around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south wind.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 5 to 10 mph.
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ABOUT THIS FORECAST
Point Forecast:
3 Miles WNW Whiteash IL
37.8°N 88.97°W
37.8°N 88.97°W
11:01 am CDT Jun 21, 2026
11am CDT Jun 21, 2026-6pm CDT Jun 27, 2026



