Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

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

Overcast

73°F

23°C

Humidity 74%
Wind Speed W 12 mph
Barometer 29.70 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 1 Aug 11:53 am CDT
Detailed forecast for

Union County

This Afternoon
Mostly cloudy with a 20 percent chance of showers. Near steady temperature in the upper 70s. West winds around 10 mph.
Tonight
Mostly cloudy with a 30 percent chance of showers. Lows in the upper 60s. Northwest winds 5 to 10 mph.
Sunday
Mostly cloudy with a chance of showers. Highs in the upper 70s. Northwest winds 10 to 15 mph. Chance of rain 50 percent.
Sunday Night
Partly cloudy. Lows in the upper 60s. North winds 5 to 10 mph.
Monday
Mostly sunny. Highs in the mid 80s. North winds around 5 mph.
Monday Night Through Wednesday Night
Mostly clear. Lows in the upper 60s. Highs in the upper 80s.
Thursday Through Friday
Partly cloudy. Highs in the lower 90s. Lows in the lower 70s.



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1218 PM CDT Sat Aug 1 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database