Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend

Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

86°F

30°C

Humidity	70%
Wind Speed	SW 8 mph
Barometer	30.02 in
Dewpoint	75°F (24°C)
Visibility	8.00 mi
Heat Index	95°F (35°C)
Last update	20 Jul 10:52 am CDT

More Information:

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

Extended Forecast for

2 Miles N De Soto IL

Heat Advisory July 20, 12:00pm until July 20, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 94 °F
Mostly Sunny
Tonight
Low: 77 °F
Mostly Clear
then Slight
Chance
T-storms
Monday
High: 93 °F
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 76 °F
Slight Chance
T-storms
Tuesday
High: 93 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 96 °F
Sunny
Wednesday Night
Low: 77 °F
Mostly Clear
Thursday
High: 95 °F
Sunny

Detailed Forecast

Today

Mostly sunny, with a high near 94. Heat index values as high as 107. Southwest wind around 9 mph.

Tonight

A slight chance of showers and thunderstorms between 1am and 4am. Partly cloudy, with a low around 77. South southwest wind around 6 mph. Chance of precipitation is 20%.

Monday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 105. West wind around 6 mph becoming north in the afternoon.

Monday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. East northeast wind around 5 mph becoming calm in the evening.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southeast wind 3 to 6 mph.

Tuesday Night

Mostly clear, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.

Wednesday

Sunny, with a high near 96. Calm wind becoming south southwest around 6 mph in the morning.

Wednesday Night

Mostly clear, with a low around 77. South southeast wind around 5 mph becoming calm in the evening.

Thursday

Sunny, with a high near 95. South southwest wind 3 to 7 mph.

Thursday Night

Mostly clear, with a low around 76. South wind 3 to 6 mph.