The mayor's office and NBC officials said Thursday that Emanuel will appear on the show June 3.
The pair made a deal earlier this year. If Fallon did the "Polar Plunge" on March 2 then Emanuel would appear on Fallon's show in New York.
Emanuel took the quick, but frigid dip first wearing a T-shirt and shorts. Fallon went next, dressed in a full suit and tie. It was 10 degrees outside and the water temperature was 32.
The annual event drew several thousand plungers, raising more than $1 million for Special Olympics Chicago.
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