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

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Monroe Municipal Airport (KEFT)

Lat: 42.62°NLon: 89.59°WElev: 1082ft.

Fair

64°F

18°C

Humidity	78%
Wind Speed	S 12 mph
Barometer	30.04 in
Dewpoint	57°F (14°C)
Visibility	10.00 mi
Last update	21 Aug 8:15 am CDT

More Information:

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

Extended Forecast for

3 Miles N Lake Summerset IL

Today
High: 78 °F
T-storms
Likely
Tonight
Low: 61 °F
T-storms
Likely then
Partly Cloudy
Saturday
High: 78 °F
Sunny
Saturday Night
Low: 55 °F
Mostly Clear
Sunday
High: 75 °F
Sunny
Sunday Night
Low: 54 °F
Partly Cloudy
Monday
High: 76 °F
Mostly Sunny
Monday Night
Low: 57 °F
Partly Cloudy
Tuesday
High: 77 °F
Partly Sunny

Detailed Forecast

Today

A chance of showers, then showers and thunderstorms likely after 11am. Mostly cloudy, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Showers and thunderstorms likely, mainly before 9pm. Partly cloudy, with a low around 61. West southwest wind around 5 mph becoming northwest after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

Sunny, with a high near 78. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Saturday Night

Mostly clear, with a low around 55. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday

Sunny, with a high near 75. Northwest wind 5 to 10 mph.

Sunday Night

Partly cloudy, with a low around 54.

Monday

Mostly sunny, with a high near 76.

Monday Night

Partly cloudy, with a low around 57.