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Green Bay

Green Bay Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Green Bay, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Lake Water Temperature Information

42°F

TODAY

41°F

YESTERDAY

40°F

A WEEK AGO

As of today, the minimum water temperature in the Green Bay ranges from 41°F (5°C) to 47°F (8°C). This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Green Bay Over the Last 30 Days

Today the water temperature in Green Bay is higher than the same day in previous years. The water temperature range here in April is from 36°F to 48°F. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Green Bay are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Daily Water Temperature Chart

DateCurrentAverageForecast
Apr 940°F42°F
Apr 1039°F42°F
Apr 1139°F42°F
Apr 1239°F42°F
Apr 1340°F42°F
Apr 1441°F42°F
Apr 1541°F42°F
Apr 1642°F42°F
Apr 1742°F42°F
Apr 1842°F42°F
Apr 1942°F42°F
Apr 2042°F42°F
Apr 2142°F42°F
Apr 2242°F42°F
Apr 2342°F42°F
Apr 2442°F42°F
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Green Bay by Month

January

MinimumAverageMaximum
34°F39°F45°F

February

MinimumAverageMaximum
34°F40°F46°F

March

MinimumAverageMaximum
32°F37°F41°F

April

MinimumAverageMaximum
36°F42°F48°F

May

MinimumAverageMaximum
64°F69°F73°F

June

MinimumAverageMaximum
64°F68°F72°F

July

MinimumAverageMaximum
68°F72°F77°F

August

MinimumAverageMaximum
73°F77°F81°F

September

MinimumAverageMaximum
54°F58°F63°F

October

MinimumAverageMaximum
55°F59°F63°F

November

MinimumAverageMaximum
32°F33°F37°F

December

MinimumAverageMaximum
32°F33°F37°F

Monthly Water Temperature Histogram for Green Bay

Green Bay Weather

APRIL 17

30°F / 45°F
overcast

rain: 19% | wind: 11 mph

APRIL 18

37°F / 54°F
moderate rain

rain: 68% | wind: 22 mph

APRIL 19

41°F / 55°F
dense intensity drizzle

rain: 51% | wind: 16 mph

Water Temperature in Green Bay: General Trends and Swimming Opportunities

Green Bay is located in the state of Wisconsin, in the county of Door, at an elevation of 570 feet (174 meters) above sea level.

Green Bay is a large lake. Its surface area is 39 sq mi (100 sq km). Lakes of this size can serve as important regional resources, providing drinking water and fish stocks.

The water temperature in Green Bay varies throughout the year, ranging from 32°F (0°C) in March to 81°F (27°C) in August. The average annual water temperature of the lake is 52°F (11°C). The months when the average water temperature in Green Bay exceeds 68 degrees Fahrenheit (20°C) are May, June, July and August.

The nearest cities ans towns to Green Bay are: Menominee in Michigan and Marinette, Peshtigo, Sturgeon Bay, Brussels, Oconto, Algoma in Wisconsin.

Geographical Location of Green Bay

Frequently Asked Questions About Green Bay and its Water Temperatures

What is the current water temperature in Green Bay?

The water temperature today in Green Bay is 42°F (5.8°C).

What is the water temperature in Green Bay during the summer months?

The average water temperature in Green Bay during the summer months is typically between 68°F to 77°F (20°C to 25°C), and it can reach up to 81°F (27°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Green Bay in May?

The average water temperature in Green Bay in May ranges from 64°F to 73°F (18°C to 23°C).

What is the water temperature in Green Bay in September?

The average water temperature in Green Bay in September is typically between 54°F to 63°F (12°C to 17°C).

Where is Green Bay located?

Green Bay is located in the United States in the state of Wisconsin, in the county of Door, at an elevation of 570 feet (174 meters) above sea level. The surface area of the lake is 38.726 sq mi (100.30 sq km).

Is it possible to swim in Green Bay and what are the possibilities for this?

Yes, swimming is possible in Green Bay, Wisconsin with public beaches like Bay Beach and Whitefish Dunes. Water temperature and safety protocols should be considered for such activities.

What are the coordinates of Green Bay?

Green Bay is located at coordinates 44.9860°N 87.5220°W.

Is Lake Green Bay a popular vacation spot among Americans?

Green Bay is very popular in the United States and ranks among the top 20 lakes in the country in terms of interest, recreational opportunities, and fishing.