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Lake St. Louis

Lake St. Louis Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Lake St. Louis, 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

35°F

TODAY

36°F

YESTERDAY

36°F

A WEEK AGO

As of today, the minimum water temperature in the Lake St. Louis ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.

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 Lake St. Louis Over the Last 30 Days

Today the water temperature in Lake St. Louis is higher than the same day in previous years. The water temperature range here in March is from 32°F to 39°F. The water temperature is trending downward, and it has decreased both over the past 30 days and the past week.

The forecasted water temperature values for Lake St. Louis 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
Mar 2236°F35°F
Mar 2336°F35°F
Mar 2436°F35°F
Mar 2536°F35°F
Mar 2637°F35°F
Mar 2736°F35°F
Mar 2836°F35°F
Mar 2935°F35°F
Mar 3035°F35°F
Mar 3135°F35°F
Apr 133°F35°F
Apr 233°F35°F
Apr 333°F35°F
Apr 433°F34°F
Apr 533°F34°F
Apr 633°F34°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 Lake St. Louis by Month

January

MinimumAverageMaximum
32°F37°F41°F

February

MinimumAverageMaximum
32°F36°F41°F

March

MinimumAverageMaximum
32°F35°F39°F

April

MinimumAverageMaximum
32°F33°F37°F

May

MinimumAverageMaximum
37°F42°F46°F

June

MinimumAverageMaximum
50°F55°F59°F

July

MinimumAverageMaximum
72°F76°F81°F

August

MinimumAverageMaximum
66°F70°F75°F

September

MinimumAverageMaximum
68°F72°F77°F

October

MinimumAverageMaximum
46°F51°F55°F

November

MinimumAverageMaximum
36°F40°F45°F

December

MinimumAverageMaximum
34°F39°F43°F

Monthly Water Temperature Histogram for Lake St. Louis

Lake St. Louis Weather

MARCH 29

18°F / 30°F
heavy intensity snow fall

rain: 79% | wind: 14 mph

MARCH 30

21°F / 32°F
moderate snow fall

rain: 79% | wind: 10 mph

MARCH 31

32°F / 36°F
moderate snow fall

rain: 83% | wind: 10 mph

APRIL 1

10°F / 32°F
overcast

rain: 54% | wind: 11 mph

APRIL 2

14°F / 30°F
overcast

rain: 15% | wind: 8 mph

Water Temperature in Lake St. Louis: General Trends and Swimming Opportunities

Lake St.

Lake St. Louis is a medium lake. Its surface area is 26.4 sq mi (68.3 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Lake St. Louis varies throughout the year, ranging from 32°F (0°C) in January to 81°F (27°C) in July. The average annual water temperature of the lake is 48°F (9°C). The months when the average water temperature in Lake St. Louis exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

Geographical Location of Lake St. Louis

Frequently Asked Questions About Lake St. Louis and its Water Temperatures

What is the current water temperature in Lake St. Louis?

The water temperature today in Lake St. Louis is 35°F (1.7°C).

What is the water temperature in Lake St. Louis during the summer months?

The average water temperature in Lake St. Louis during the summer months is typically between 55°F to 76°F (13°C to 24°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 Lake St. Louis in May?

The average water temperature in Lake St. Louis in May ranges from 37°F to 46°F (3°C to 8°C).

What is the water temperature in Lake St. Louis in September?

The average water temperature in Lake St. Louis in September is typically between 68°F to 77°F (20°C to 25°C).

Where is Lake St. Louis located?

Lake St. Louis is located in the United States in the state of New York, in the county of Franklin, at an elevation of 59 feet (18 meters) above sea level. The surface area of the lake is 26.367 sq mi (68.29 sq km).

Is it possible to swim in Lake St. Louis and what are the possibilities for this?

No, it is unfeasible to swim in Lake St. Louis as it is located in Quebec, Canada, not New York or Vermont. Hence, your coordinates may need to be reviewed for accuracy.

What are the coordinates of Lake St. Louis?

Lake St. Louis is located at coordinates 45.3970°N 73.8170°W.

Is Lake Lake St. Louis a popular vacation spot among Americans?

Lake St. Louis enjoys local popularity among the residents of State New York, and nationally, it ranks in the top 10 percent of all lakes in the country.