National Weather Service

News Headlines

Fall Spotter Training Classes

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

79°F

26°C

Humidity	88%
Wind Speed	Calm
Barometer	30.05 in (1017.0 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	16 Aug 8:52 pm CDT

More Information:

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

Extended Forecast for

3 Miles WSW Du Quoin IL

Heat Advisory August 16, 09:19pm until August 19, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 16, 09:19pm until August 19, 07:00pm
NOW until 7:00pm Tue
Heat Advisory
Tonight
Low: 74 °F
Mostly Clear
Sunday
High: 99 °F
Mostly Sunny
then Slight
Chance
T-storms
Sunday Night
Low: 74 °F
Slight Chance
T-storms then
Mostly Clear
Monday
High: 99 °F
Hot
Monday Night
Low: 75 °F
Mostly Clear
Tuesday
High: 99 °F
Hot
Tuesday Night
Low: 72 °F
Chance
T-storms
Wednesday
High: 90 °F
Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 74. Light south wind.

Sunday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 106. Calm wind becoming east around 5 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 74. Light and variable wind.

Monday

Sunny and hot, with a high near 99. Heat index values as high as 107. Light east southeast wind.

Monday Night

Mostly clear, with a low around 75. Light and variable wind.

Tuesday

Sunny and hot, with a high near 99. Calm wind becoming northwest around 6 mph in the afternoon.

Tuesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Northeast wind around 6 mph becoming calm in the evening.

Wednesday

A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. North wind 5 to 10 mph.