Chicago Water Temperature
24°C / 75°F
The measurements for the water temperature in Chicago, Illinois are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.
Monthly average water temp
Monthly average max / min water temperatures
The graph below shows the range of monthly Chicago water temperature derived from many years of historical sea surface temperature data.
The warmest water temperature is in August with an average around 73.8°F / 23.2°C. The coldest month is February with an average water temperature of 36.9°F / 2.7°C.