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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

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

78°F

26°C

Humidity	74%
Wind Speed	NE 9 mph
Barometer	30.06 in (1016.9 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	14 Aug 4:53 pm CDT

More Information:

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

Extended Forecast for

Chicago IL

Flood Watch August 14, 10:00pm until August 15, 10:00am

Click here for hazard details and duration

Flood Watch

This Afternoon
High: 78 °F
Slight Chance
Showers
Tonight
Low: 71 °F
Chance
Showers then
Showers
Likely
Saturday
High: 85 °F
Showers then
Showers
Likely
Saturday Night
Low: 74 °F
Mostly Cloudy
then Chance
T-storms
Sunday
High: 85 °F
Chance
T-storms
Sunday Night
Low: 69 °F
Partly Cloudy
Monday
High: 79 °F
Mostly Sunny
Monday Night
Low: 66 °F
Mostly Clear
Tuesday
High: 82 °F
Mostly Sunny

Detailed Forecast

This Afternoon

A 20 percent chance of showers. Partly sunny, with a high near 78. Northeast wind around 10 mph.

Tonight

A chance of showers before midnight, then a chance of showers and thunderstorms between midnight and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 71. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm. High near 85. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 74. West southwest wind 5 to 10 mph.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. West wind around 10 mph, with gusts as high as 15 mph.

Sunday Night

Partly cloudy, with a low around 69.

Monday

Mostly sunny, with a high near 79.

Monday Night

Mostly clear, with a low around 66.

Tuesday

Mostly sunny, with a high near 82.

Tuesday Night

A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 68.

Wednesday

A chance of showers. Mostly cloudy, with a high near 80.