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August 11, 2026: Powerful Morning Derecho Produces Widespread Wind Damage and Tornadoes Across Northern Illinois and Northwest Indiana

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

75°F

24°C

Humidity	55%
Wind Speed	NE 9 mph
Barometer	30.08 in (1017.7 mb)
Dewpoint	58°F (14°C)
Visibility	10.00 mi
Last update	20 Aug 11:51 am CDT

More Information:

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

Extended Forecast for

2 Miles WNW Waukegan IL

This Afternoon
High: 77 °F
Sunny
Tonight
Low: 60 °F
Partly Cloudy
Friday
High: 80 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 62 °F
Chance
T-storms
Saturday
High: 77 °F
Mostly Sunny
then Slight
Chance
T-storms
Saturday Night
Low: 59 °F
Mostly Clear
Sunday
High: 74 °F
Sunny
Sunday Night
Low: 58 °F
Partly Cloudy
Monday
High: 76 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 77. East wind around 5 mph.

Tonight

Partly cloudy, with a low around 60. Calm wind becoming southwest around 5 mph after midnight.

Friday

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 80. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Friday Night

A 40 percent chance of showers and thunderstorms before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 62. Southwest wind around 5 mph becoming west northwest after midnight. Winds could gust as high as 10 mph.

Saturday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. Northwest wind around 10 mph, with gusts as high as 20 mph.

Saturday Night

Mostly clear, with a low around 59.

Sunday

Sunny, with a high near 74.

Sunday Night

Partly cloudy, with a low around 58.

Monday

Mostly sunny, with a high near 76.

Monday Night

Partly cloudy, with a low around 60.

Tuesday

Mostly sunny, with a high near 80.