National Weather Service

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

Current conditions at

Joliet Regional Airport (KJOT)

Lat: 41.52°NLon: 88.18°WElev: 572ft.

Fair

82°F

28°C

Humidity	47%
Wind Speed	NW 5 mph
Barometer	30.02 in
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	17 Aug 3:35 pm CDT

More Information:

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

Extended Forecast for

Joliet IL

This Afternoon
High: 78 °F
Isolated
Showers
Tonight
Low: 62 °F
Mostly Clear
Tuesday
High: 80 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 66 °F
Showers
Likely
Wednesday
High: 79 °F
Partly Sunny
Wednesday Night
Low: 62 °F
Partly Cloudy
Thursday
High: 79 °F
Sunny
Thursday Night
Low: 60 °F
Mostly Clear
Friday
High: 79 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Isolated showers before 4pm. Mostly sunny, with a high near 78. North northwest wind around 10 mph. Chance of precipitation is 20%.

Tonight

Mostly clear, with a low around 62. Northwest wind around 5 mph becoming calm.

Tuesday

A 20 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 80. West southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Tuesday Night

A slight chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Southwest wind around 5 mph becoming west northwest after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 60%.

Wednesday

Partly sunny, with a high near 79. North northwest wind around 5 mph.

Wednesday Night

Partly cloudy, with a low around 62.

Thursday

Sunny, with a high near 79.

Thursday Night

Mostly clear, with a low around 60.

Friday

Mostly sunny, with a high near 79.

Friday Night

A chance of showers. Partly cloudy, with a low around 63.