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Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
70°F
21°C
| Humidity | 34% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 30.09 in (1018.7 mb) |
| Dewpoint | 40°F (4°C) |
| Visibility | 10.00 mi |
| Last update | 14 May 1:52 pm CDT |
Extended Forecast for
3 Miles NNW Royalton IL
This Afternoon
High: 77 °F
Sunny
Tonight
Low: 52 °F
Mostly Clear
Friday
High: 82 °F
Chance
T-stormsFriday Night
Low: 67 °F
Chance
T-stormsSaturday
High: 87 °F
Chance
Showers then
Chance
T-stormsSaturday Night
Low: 66 °F
Partly Cloudy
Sunday
High: 89 °F
Sunny
Sunday Night
Low: 70 °F
Clear
Monday
High: 91 °F
Mostly Sunny
then Slight
Chance
T-storms
Detailed Forecast
This Afternoon
Sunny, with a high near 77. Calm wind.
Tonight
Mostly clear, with a low around 52. South southeast wind 3 to 7 mph.
Friday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. South southeast wind 9 to 16 mph becoming east in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. South wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 66. South wind 7 to 10 mph.
Sunday
Sunny, with a high near 89. South wind 8 to 17 mph, with gusts as high as 24 mph.
Sunday Night
Clear, with a low around 70. South wind 10 to 14 mph, with gusts as high as 22 mph.
Monday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South wind 11 to 18 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind 14 to 16 mph, with gusts as high as 24 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 88. Southwest wind 14 to 18 mph, with gusts as high as 24 mph.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 65. South southwest wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South wind 6 to 8 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
3 Miles NNW Royalton IL
37.92°N 89.13°W
37.92°N 89.13°W
1:26 pm CDT May 14, 2026
2pm CDT May 14, 2026-6pm CDT May 20, 2026
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