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Mary Lake

Mary Lake Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Mary Lake, 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

45°F

TODAY

46°F

YESTERDAY

45°F

A WEEK AGO

As of today, the minimum water temperature in the Mary Lake 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 Mary Lake Over the Last 30 Days

Today the water temperature in Mary Lake is lower than the same day in previous years. The water temperature range here in May is from 39°F to 61°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 Mary Lake 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
May 945°F50°F
May 1045°F50°F
May 1146°F50°F
May 1246°F50°F
May 1346°F50°F
May 1446°F50°F
May 1546°F50°F
May 1645°F50°F
May 1750°F46°F
May 1850°F46°F
May 1950°F46°F
May 2050°F46°F
May 2150°F47°F
May 2250°F47°F
May 2350°F47°F
May 2450°F47°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 Mary Lake by Month

January

MinimumAverageMaximum
32°F35°F39°F

February

MinimumAverageMaximum
32°F36°F41°F

March

MinimumAverageMaximum
32°F37°F43°F

April

MinimumAverageMaximum
32°F43°F54°F

May

MinimumAverageMaximum
39°F50°F61°F

June

MinimumAverageMaximum
59°F63°F68°F

July

MinimumAverageMaximum
75°F79°F84°F

August

MinimumAverageMaximum
68°F73°F77°F

September

MinimumAverageMaximum
64°F68°F72°F

October

MinimumAverageMaximum
55°F59°F63°F

November

MinimumAverageMaximum
46°F51°F55°F

December

MinimumAverageMaximum
37°F41°F45°F

Monthly Water Temperature Histogram for Mary Lake

Mary Lake Weather

MAY 17

52°F / 70°F
moderate rain

rain: 58% | wind: 12 mph

MAY 18

41°F / 55°F
light drizzle

rain: 65% | wind: 13 mph

MAY 19

36°F / 59°F
overcast

rain: 4% | wind: 11 mph

MAY 20

32°F / 61°F
overcast

rain: 1% | wind: 10 mph

MAY 21

32°F / 52°F
overcast

rain: 36% | wind: 9 mph

MAY 22

39°F / 50°F
fog

rain: 46% | wind: 11 mph

Water Temperature in Mary Lake: General Trends and Swimming Opportunities

Mary Lake is located in Canada in the province of Ontario, at an elevation of 918 feet (280 meters) above sea level.

Mary Lake is a medium lake. Its surface area is 4.1 sq mi (10.7 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Mary Lake varies throughout the year, ranging from 32°F (0°C) in January to 84°F (29°C) in July. The average annual water temperature of the lake is 54°F (12°C). The months when the average water temperature in Mary Lake exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

Geographical Location of Mary Lake

Frequently Asked Questions About Mary Lake and its Water Temperatures

What is the current water temperature in Mary Lake?

The water temperature today in Mary Lake is 45°F (7.4°C).

What is the water temperature in Mary Lake during the summer months?

The average water temperature in Mary Lake during the summer months is typically between 63°F to 79°F (17°C to 26°C), and it can reach up to 84°F (29°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Mary Lake in May?

The average water temperature in Mary Lake in May ranges from 52°F to 61°F (11°C to 16°C).

What is the water temperature in Mary Lake in September?

The average water temperature in Mary Lake in September is typically between 64°F to 72°F (18°C to 22°C).

Where is Mary Lake located?

Mary Lake is located in Canada in the province of Ontario, at an elevation of 918 feet (280 meters) above sea level. The surface area of the lake is 4.112 sq mi (10.65 sq km).

Is it possible to swim in Mary Lake and what are the possibilities for this?

Yes, swimming in Mary Lake, Ontario is possible and typically depends on weather conditions and personal safety measures. The lake is accessible for swimmers, though no lifeguards are present on its shores.

What are the coordinates of Mary Lake?

Mary Lake is located at coordinates 45.2370°N 79.2630°W.