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Lightning Safety Awareness Week June 22-28 2025

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Southern Illinois Airport (KMDH)

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

A Few Clouds

75°F

24°C

Humidity	90%
Wind Speed	E 6 mph
Barometer	29.86 in (1010.7 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	13 Jun 8:52 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Detailed forecast for

Union County

Tonight

Showers likely with a chance of thunderstorms this evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 60 percent.

Saturday

Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the lower 80s. Southwest winds around 5 mph, becoming northwest in the afternoon. Chance of rain 50 percent.

Saturday Night

Partly cloudy. Lows in the upper 60s. Northwest winds around 5 mph.

Sunday

Partly sunny. Highs in the mid 80s. Northwest winds around 5 mph.

Sunday Night

Partly cloudy in the evening, then becoming mostly cloudy. Lows around 70. Northeast winds around 5 mph in the evening, becoming light and variable.

Monday

Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40 percent.

Monday Night

Mostly cloudy. A chance of showers in the evening. Lows around 70. Chance of rain 40 percent.

Tuesday

Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.

Tuesday Night

Partly cloudy. Lows in the mid 70s.

Wednesday

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.

Wednesday Night

Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 50 percent.

Juneteenth

Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.

Thursday Night And Friday

Mostly clear. Lows in the upper 60s. Highs in the upper 80s.