Chicago Water Temperature

(Today) 2022

19.2°C / 66.5°F

Current weather

24°C / 75°F
(clear sky)

Partly cloudy

Wind

4 mph

Humidity

47%


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.

Chicago average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Chicago
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 1.4 1.9 2.5 4.3 7.8 18.1 21.6 17.5 11.5 6.9 3.1
Max °C 4.8 4 4.5 7.4 9.9 20.5 24.9 24.9 23.2 18.4 12.3 8.4
Min °F 38.1 35.6 36.5 38.4 42 51.1 67.3 72.2 65.7 55.4 46.6 39.7
Max °F 39.9 38.2 39.1 43.3 47.6 63.8 74.1 75.5 71.4 62.3 52 45

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.