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Rainy Lake

Rainy Lake Current Water Temperature and Forecast

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

33°F

TODAY

33°F

YESTERDAY

38°F

A WEEK AGO

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

Today the water temperature in Rainy Lake is lower 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 Rainy 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
Mar 2138°F35°F
Mar 2238°F35°F
Mar 2338°F35°F
Mar 2438°F35°F
Mar 2533°F35°F
Mar 2633°F35°F
Mar 2733°F35°F
Mar 2833°F35°F
Mar 2935°F33°F
Mar 3035°F33°F
Mar 3135°F34°F
Apr 146°F34°F
Apr 246°F35°F
Apr 346°F36°F
Apr 446°F37°F
Apr 546°F37°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 Rainy Lake by Month

January

MinimumAverageMaximum
32°F34°F39°F

February

MinimumAverageMaximum
32°F35°F39°F

March

MinimumAverageMaximum
32°F35°F39°F

April

MinimumAverageMaximum
41°F46°F50°F

May

MinimumAverageMaximum
57°F62°F66°F

June

MinimumAverageMaximum
73°F77°F81°F

July

MinimumAverageMaximum
72°F76°F81°F

August

MinimumAverageMaximum
73°F78°F82°F

September

MinimumAverageMaximum
64°F69°F73°F

October

MinimumAverageMaximum
43°F47°F52°F

November

MinimumAverageMaximum
37°F42°F46°F

December

MinimumAverageMaximum
34°F38°F43°F

Monthly Water Temperature Histogram for Rainy Lake

Rainy Lake Weather

MARCH 29

14°F / 32°F
moderate snow fall

rain: 71% | wind: 10 mph

MARCH 30

16°F / 32°F
overcast

rain: 8% | wind: 9 mph

MARCH 31

14°F / 30°F
overcast

rain: 3% | wind: 7 mph

APRIL 1

18°F / 32°F
fog

rain: 5% | wind: 11 mph

Water Temperature in Rainy Lake: General Trends and Swimming Opportunities

Rainy Lake is located in the state of Minnesota, in the counties of Koochiching, St.

Rainy Lake is a large lake. Its surface area is 72 sq mi (185 sq km). Lakes of this size can serve as important regional resources, providing drinking water and fish stocks.

The water temperature in Rainy Lake varies throughout the year, ranging from 32°F (0°C) in January to 82°F (28°C) in August. The average annual water temperature of the lake is 54°F (12°C). The months when the average water temperature in Rainy Lake exceeds 68 degrees Fahrenheit (20°C) are June, July, August and September.

The nearest cities ans towns to Rainy Lake are: International Falls in Minnesota.

Geographical Location of Rainy Lake

Frequently Asked Questions About Rainy Lake and its Water Temperatures

What is the current water temperature in Rainy Lake?

The water temperature today in Rainy Lake is 33°F (0.6°C).

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

The average water temperature in Rainy Lake during the summer months is typically between 76°F to 78°F (24°C to 26°C), and it can reach up to 82°F (28°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Rainy Lake in May?

The average water temperature in Rainy Lake in May ranges from 57°F to 66°F (14°C to 19°C).

What is the water temperature in Rainy Lake in September?

The average water temperature in Rainy Lake in September is typically between 64°F to 73°F (18°C to 23°C).

Where is Rainy Lake located?

Rainy Lake is located in the United States in the state of Minnesota, in the counties of Koochiching, St. Louis, at an elevation of 1099 feet (335 meters) above sea level. The surface area of the lake is 71.516 sq mi (185.23 sq km).

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

Yes, it is possible to swim in Rainy Lake, Minnesota. Recreational activities such as swimming are catered for, with several beaches and camping areas available for public use.

What are the coordinates of Rainy Lake?

Rainy Lake is located at coordinates 48.5710°N 92.8690°W.

Is Lake Rainy Lake a popular vacation spot among Americans?

Rainy Lake is quite popular among Americans and ranks among the top 500 lakes in the United States.

What species of fish can be found in Rainy Lake?

Rainy Lake is home to fish species such as Walleye (best caught in Spring, Fall), Northern pike (Spring, Fall), Smallmouth bass (Spring, Fall), Largemouth bass (Spring, Fall), Yellow perch (Spring, Winter), Black crappie (Spring, Fall), Bluegill (Spring, Summer), Rock bass (Spring, Summer), Lake trout (Spring, Fall), Muskellunge (Spring, Fall), Rainbow trout (Spring, Fall), Brown trout (Spring, Fall).