Areas of Thunderstorms and Heavy Rain Across the Country; Heat Wave Begins This Weekend

Widespread showers and thunderstorms, some severe, may bring heavy rain and flash flooding in the central Gulf Coast, Mid-Atlantic, the Upper Midwest, the Great Basin and Southwest. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend. Critical fire weather conditions are expected in the Northwest and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog/Mist

73°F

23°C

Humidity	100%
Wind Speed	Calm
Barometer	30.02 in (1016.3 mb)
Dewpoint	73°F (23°C)
Visibility	2.50 mi
Last update	18 Jul 3:52 am CDT

More Information:

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

Extended Forecast for

3 Miles SE Makanda IL

Heat Advisory July 18, 11:00am until July 18, 07:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 89 °F
Chance
T-storms and
Areas Fog
Tonight
Low: 75 °F
Chance
T-storms
Saturday
High: 90 °F
Chance
T-storms
Saturday Night
Low: 76 °F
Slight Chance
T-storms
Sunday
High: 93 °F
Chance
T-storms
Sunday Night
Low: 76 °F
Slight Chance
T-storms
Monday
High: 93 °F
Mostly Sunny
then Chance
T-storms
Monday Night
Low: 77 °F
Mostly Clear
Tuesday
High: 94 °F
Sunny then
Slight Chance
T-storms

Detailed Forecast

Today

A 50 percent chance of showers and thunderstorms, mainly after 11am. Areas of fog before 9am. Otherwise, partly sunny, with a high near 89. Light and variable wind.

Tonight

A chance of showers and thunderstorms before 4am, then a slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 75. Light south wind. Chance of precipitation is 50%.

Saturday

A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South southwest wind 5 to 7 mph.

Saturday Night

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. South southwest wind around 5 mph.

Sunday

A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Southwest wind around 5 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. South wind 3 to 5 mph.

Monday

A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. South southwest wind 3 to 6 mph.

Monday Night

Mostly clear, with a low around 77. South wind 3 to 5 mph.