Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
5 Miles S Pinckneyville IL
Extreme Heat Warning August 16, 03:07am until August 16, 08:00pm
NOW until 8:00pm Sun

Extreme Heat Warning
Overnight

Low: 77 °F
Partly Cloudy
Sunday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-stormsSunday Night

Low: 72 °F
Chance
T-stormsMonday
High: 88 °F
Slight Chance
Showers then
Mostly SunnyMonday Night

Low: 66 °F
Partly Cloudy
Tuesday

High: 90 °F
Sunny
Tuesday Night
Low: 70 °F
Mostly Clear
then Chance
T-stormsWednesday

High: 91 °F
Chance
Showers
Detailed Forecast
Overnight
Partly cloudy, with a steady temperature around 77. Southwest wind 3 to 5 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 113. Light and variable wind becoming west southwest around 6 mph in the morning.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light north northwest wind. Chance of precipitation is 40%.
Monday
A 10 percent chance of showers before 7am. Mostly sunny, with a high near 88. North northwest wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 66. Light north wind.
Tuesday
Sunny, with a high near 90. Calm wind.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70. Light south wind.
Wednesday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 91. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind 3 to 6 mph.
Thursday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84. North northeast wind 3 to 6 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. North northeast wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 64. Calm wind.
Saturday
Mostly sunny, with a high near 86. Calm wind becoming north northwest around 6 mph in the afternoon.
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ABOUT THIS FORECAST
Point Forecast:
5 Miles S Pinckneyville IL
37.99°N 89.38°W
37.99°N 89.38°W
2:56 am CDT Aug 16, 2026
3am CDT Aug 16, 2026-6pm CDT Aug 22, 2026



