Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78° N Lon: 89.25° W Elev: 400 ft.

Fair

53°F

12°C

Humidity 96%
Wind Speed Calm
Barometer 30.16 in (1021.2 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Aug 2:52 am CDT
Detailed forecast for

Union County

Overnight
Partly cloudy. Near steady temperature in the upper 50s. Southeast winds around 5 mph.
Thursday
Mostly sunny. Highs in the lower 80s. South winds around 5 mph.
Thursday Night
Mostly clear. Lows in the upper 50s. Calm winds.
Friday
Sunny. Highs in the upper 80s. Northeast winds around 5 mph.
Friday Night
Mostly clear. Lows in the lower 60s. Northeast winds around 5 mph.
Saturday And Saturday Night
Mostly clear. Highs in the mid 80s. Lows around 60.
Sunday Through Tuesday
Partly cloudy. Highs in the mid 80s. Lows in the lower 60s.
Tuesday Night
Mostly clear. Lows in the lower 60s.
Wednesday
Mostly sunny. Highs in the mid 80s.



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259 AM CDT Thu Aug 28 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database