Winnetka water temp

This data the coastal Winnetka water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in Winnetka

Water temperature in Winnetka today is 67.1°F. Based on our historical data over a period of ten years, the warmest water in this day in Winnetka was recorded in 2017 and was 70.9°F, and the coldest was recorded in 2019 at 61°F. Water temperature in Winnetka is expected to drop to 61.9°F in the next 10 days. September average water temperature in Winnetka is 68.2°F, the minimum temperature is 55.9°F, and the maximum is 75°F.

The swimming season in Winnetka lasts from July to September. During those months, Winnetka water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Winnetka in winter reaches 36.5°F, in spring 43.2°F, in summer the average temperature rises to 68.2°F, and in autumn it is 58.3°F.

Winnetka water temperature now

Surf Forecast in Winnetka for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Winnetka. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Winnetka. Data in table shown for September 27, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Winnetka

Winnetka weather forecast

Current temperature and weather

Data in a table show Winnetka temperature today (September 27, 2025). For more information and forecast for a few days, go to the weather forecast Winnetka.

0-3 h	3-6 h	6-9 h	9-12 h
59.5°F	57.9°F	57.2°F	66°F

12-15 h	15-18 h	18-21 h	21-24 h
81.7°F	79.2°F	74.5°F	68.7°F

Winnetka water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Winnetka. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Winnetka on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Winnetka

Michigan Lake water temperature

The nearest beaches and cities from Winnetka with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Glencoe	68.7°F	82.4°F		0' 7"
Rogers Park	63°F	78.8°F		0' 7"
Highland Park	69.4°F	82.4°F		0' 9"
Montrose Beach	61.2°F	84.2°F		0' 7"
Foster Beach	61.2°F	84.2°F		0' 7"
Lake Forest	69.3°F	78.8°F		0' 9"
Oak Street Beach	67.6°F	84.2°F		0' 7"
North Avenue Beach	67.6°F	84.2°F		0' 7"
Chicago	68.7°F	84.2°F		0' 7"
Ohio Street Beach	68.7°F	84.2°F		0' 7"

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Our report for Winnetka is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.