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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

9.4°C

TODAY

12.5°C

YESTERDAY

14.1°C

A WEEK AGO

As of today, the minimum water temperature in the Green Bay ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used.

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 lower than the same day in previous years. The water temperature range here in October is from 9°C to 18°C. The water temperature has decreased over the past 7 days but has increased over the past month.

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

Date	Current	Average	Forecast
Oct 24	14.1°C	13.5°C
Oct 25	13.8°C	13.5°C
Oct 26	13.4°C	13.5°C
Oct 27	13.4°C	13.5°C
Oct 28	12.7°C	13.5°C
Oct 29	12.7°C	13.5°C
Oct 30	12.5°C	13.5°C
Oct 31	9.4°C	13.5°C
Nov 1		0.6°C	8.5°C
Nov 2		0.6°C	7.7°C
Nov 3		0.6°C	7.0°C
Nov 4		0.6°C	6.4°C
Nov 5		0.6°C	5.8°C
Nov 6		0.6°C	5.3°C
Nov 7		0.6°C	4.8°C
Nov 8		0.6°C	4.4°C

* 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

Minimum	Average	Maximum
1°C	4°C	7°C

February

Minimum	Average	Maximum
1°C	4.5°C	8°C

March

Minimum	Average	Maximum
0°C	2.8°C	5°C

April

Minimum	Average	Maximum
2°C	5.5°C	9°C

May

Minimum	Average	Maximum
7°C	15°C	23°C

June

Minimum	Average	Maximum
16°C	19°C	22°C

July

Minimum	Average	Maximum
17°C	21°C	25°C

August

Minimum	Average	Maximum
20°C	23.5°C	27°C

September

Minimum	Average	Maximum
12°C	16°C	20°C

October

Minimum	Average	Maximum
9°C	13.5°C	18°C

November

Minimum	Average	Maximum
0°C	0.6°C	3°C

December

Minimum	Average	Maximum
0°C	0.6°C	3°C

Monthly Water Temperature Histogram for Green Bay

Green Bay Weather

NOVEMBER 1

4°C / 9°C

overcast

rain: 20% | wind: 16 km/h

NOVEMBER 2

2°C / 13°C

overcast

rain: 18% | wind: 23 km/h

NOVEMBER 3

5°C / 12°C

light drizzle

rain: 37% | wind: 27 km/h

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

Nearby Lakes

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 49°F (9.4°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.