The closures are due to 18- to 23-foot waves, according to the National Weather Service.
A spokesman for Navy Pier said the attraction will be closed early after it was damaged Friday.
Snow should be over in time for after-school trick-or-treating, but it will be cold — very cold.
Meteorologists observed the area's third-earliest snowfall Saturday.
The Institute of Cultural Affairs in the USA has three events left as part of the initiative.
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