Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Mostly Cloudy
81°F
27°C
| Humidity | 62% |
| Wind Speed | Vrbl 3 mph |
| Barometer | 30.05 in |
| Dewpoint | 66°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 4 Aug 10:52 am CDT |
Extended Forecast for
3 Miles NNW Royalton IL
Today
High: 88 °F
Sunny
Tonight
Low: 64 °F
Mostly Clear
Wednesday
High: 91 °F
Patchy Fog
then SunnyWednesday Night
Low: 70 °F
Mostly Clear
then Slight
Chance
T-stormsThursday
High: 88 °F
Chance
ShowersThursday Night
Low: 70 °F
Slight Chance
T-storms then
Chance
T-stormsFriday
High: 88 °F
Showers
LikelyFriday Night
Low: 70 °F
Chance
T-stormsSaturday
High: 90 °F
Slight Chance
T-storms
Detailed Forecast
Today
Sunny, with a high near 88. Light and variable wind.
Tonight
Mostly clear, with a low around 64. Light southeast wind.
Wednesday
Patchy fog before 7am. Otherwise, sunny, with a high near 91. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms between 3am and 4am. Increasing clouds, with a low around 70. Light south southeast wind. Chance of precipitation is 20%.
Thursday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 70. Calm wind.
Friday
Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. Calm wind becoming south southwest 5 to 7 mph in the morning. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south southwest wind.
Saturday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Southwest wind 3 to 5 mph.
Saturday Night
Mostly clear, with a low around 71. Light south wind.
Sunday
Sunny, with a high near 92. Light south southwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South wind 6 to 9 mph.
Monday
Sunny, with a high near 95. South southwest wind 7 to 14 mph, with gusts as high as 20 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
11:06 am CDT Aug 4, 2026
11am CDT Aug 4, 2026-6pm CDT Aug 10, 2026
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