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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

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

77°F

25°C

Humidity	47%
Wind Speed	NE 5 G 12 mph
Barometer	30.08 in
Dewpoint	55°F (13°C)
Visibility	10.00 mi
Heat Index	79°F (26°C)
Last update	20 Aug 11:45 am CDT

More Information:

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

Extended Forecast for

4 Miles SW Naperville IL

This Afternoon
High: 79 °F
Sunny
Tonight
Low: 58 °F
Partly Cloudy
Friday
High: 78 °F
Chance
Showers then
Chance
T-storms
Friday Night
Low: 63 °F
Chance
T-storms
Saturday
High: 77 °F
Mostly Sunny
then Slight
Chance
T-storms
Saturday Night
Low: 59 °F
Mostly Clear
Sunday
High: 75 °F
Sunny
Sunday Night
Low: 57 °F
Partly Cloudy
Monday
High: 76 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 79. Northeast wind around 5 mph, with gusts as high as 10 mph.

Tonight

Partly cloudy, with a low around 58. East wind around 5 mph becoming calm.

Friday

A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 78. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

Friday Night

A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63. South southwest wind around 5 mph, with gusts 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 75.

Sunday Night

Partly cloudy, with a low around 57.

Monday

Mostly sunny, with a high near 76.

Monday Night

Partly cloudy, with a low around 59.

Tuesday

Mostly sunny, with a high near 78.