Typical July highs at Rainbow Beach reach about 80°F, with reliable beach weather June to September. Rainbow Beach is located in Chicago, Illinois.
Chicago, Illinois · live parking & conditions · updated June 19, 2026
In a typical year July is the warmest month here, with highs near 80°F, and it's reliably beach weather June to September. Tap Rainbow Beach on the map for live surf, wind, water temperature, UV and tide times.
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