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August 11, 2026: Derecho produces widespread wind damage and tornadoes across northern Illinois and northwest Indiana

Hazardous Weather Conditions

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Overcast

72°F

22°C

Humidity	100%
Wind Speed	Calm
Barometer	30.10 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	15 Aug 3:35 am CDT

More Information:

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

Extended Forecast for

4 Miles WSW Orland Park IL

Flood Watch August 15, 03:56am until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

Flood Watch August 15, 03:56am until August 15, 10:00am
NOW until 10:00am Sat
Flood Watch
Overnight
Low: 71 °F
Showers
Likely
Saturday
High: 81 °F
Heavy Rain
then Chance
Showers
Saturday Night
Low: 72 °F
Slight Chance
Showers then
Chance
T-storms
Sunday
High: 84 °F
Chance
T-storms then
Partly Sunny
Sunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 80 °F
Mostly Sunny
Monday Night
Low: 63 °F
Partly Cloudy
Tuesday
High: 80 °F
Mostly Sunny

Detailed Forecast

Overnight

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Cloudy, with a low around 71. East southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 4pm, then a slight chance of showers after 4pm. Some of the storms could produce heavy rainfall. High near 81. South southeast wind 5 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Saturday Night

A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. West southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 30%.

Sunday

A 40 percent chance of showers and thunderstorms before 9am. Mostly cloudy, with a high near 84. West northwest wind around 10 mph, with gusts as high as 15 mph.

Sunday Night

Partly cloudy, with a low around 66. North northwest wind 5 to 10 mph.

Monday

Mostly sunny, with a high near 80.

Monday Night

Partly cloudy, with a low around 63.

Tuesday

Mostly sunny, with a high near 80.

Tuesday Night

Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67.

Wednesday

A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 78.