All data are in degrees Fahrenheit

en

Water temperature in Chicago

Detailed information about the current water temperature in Chicago. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Water temperature in Chicago now

73.6

°F

July 24, 00:09

Trend:

increasing

Yesterday:

73.3°F

Tomorrow:

73.8°F

Sunrise:

05:36

Sunset:

20:17

Day Length:

14 h. 41 min.

Chicago in July

Minimum:

33.7°F

Average:

36.7°F

Maximum:

39.0°F

Water temperature in Chicago today

As of now, in Chicago, the water temperature is 73.6°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent water temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 74.0°F on 2020, while the historical minimum was 69.5°F on 2019.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 74.4°F, with minimum temperature starting at 73.8°F, while the maximum might reach 74.9°F.

Daily water temperature in Chicago

Date Current Year

actual* / forecast**

last year 10 years average
Jul 10 72.5°F 71.9°F 71.0°F
Jul 11 73.1°F 71.7°F 71.1°F
Jul 12 73.1°F 72.6°F 71.6°F
Jul 13 73.8°F 73.1°F 71.9°F
Jul 14 75.4°F 73.4°F 72.0°F
Jul 15 77.1°F 73.7°F 72.2°F
Jul 16 77.6°F 74.4°F 72.6°F
Jul 17 78.6°F 74.8°F 72.5°F
Jul 18 78.7°F 72.1°F 72.2°F
Jul 19 77.5°F 71.7°F 72.1°F
Jul 20 76.3°F 71.9°F 72.4°F
Jul 21 75.7°F 71.4°F 72.4°F
Jul 22 75.4°F 71.8°F 72.2°F
Jul 23 73.3°F 72.6°F 72.1°F
Jul 24 73.6°F 72.8°F 72.4°F
Jul 25 73.8°F 73.9°F 72.6°F
Jul 26 74.0°F 74.1°F 72.8°F
Jul 27 74.5°F 74.4°F 73.3°F
Jul 28 74.8°F 75.4°F 73.6°F
Jul 29 74.9°F 76.4°F 73.7°F
Jul 30 74.5°F 76.1°F 73.3°F
Jul 31 74.4°F 76.3°F 73.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Water temperature in Chicago by month

In Chicago, there are only 17 days through the year when the water is warm enough to be comfortable for swimming.
The warmest water in Chicago was recorded on July 18, 2026, reaching a 78.7°F. While the coldest temperature occurred on January 14, 2018, dipping to 32.0°F. The average readings by season are 36.7°F in Winter, 43.4°F in Spring, 69.0°F in Summer, and 59.3°F in Autumn.