Monthly weather forecast and climate
Grand Marais, MI

January, like December, is a freezing cold winter month in Grand Marais, Michigan, with average temperature ranging between min. 6.8°F (-14°C) and max. 23°F (-5°C). January is the coldest month, with an average high-temperature of 23°F (-5°C) and an average low-temperature of 6.8°F (-14°C). Weather in January »
The last month of the winter, February, is another freezing cold month in Grand Marais, Michigan, with average temperature varying between 24.8°F (-4°C) and 6.8°F (-14°C). In February, the average high-temperature is 24.8°F (-4°C), and the average low-temperature is 6.8°F (-14°C). Weather in February »

The first month of the spring, March, is a cold month in Grand Marais, Michigan, with average temperature varying between 35.6°F (2°C) and 15.8°F (-9°C). In Grand Marais, in March, the average high-temperature is 35.6°F (2°C), and the average low-temperature is 15.8°F (-9°C). Weather in March »

April in Grand Marais, Michigan, is a chilly spring month, with average temperature varying between 28.4°F (-2°C) and 48.2°F (9°C). In April, the average high-temperature is 48.2°F (9°C), and the average low-temperature is 28.4°F (-2°C). Weather in April »

The last month of the spring, May, is a comfortable month in Grand Marais, Michigan, with temperature in the range of an average low of 39.2°F (4°C) and an average high of 60.8°F (16°C). In May, the average high-temperature is 60.8°F (16°C), and the average low-temperature is 39.2°F (4°C). Weather in May »

The first month of the summer, June, is a pleasant month in Grand Marais, Michigan, with average temperature varying between 46.4°F (8°C) and 69.8°F (21°C). The average high-temperature, is 69.8°F (21°C), while the average low-temperature is 46.4°F (8°C). Weather in June »

July in Grand Marais, Michigan, is a warm summer month, with average temperature varying between 51.8°F (11°C) and 75.2°F (24°C). The warmest month is July, with an average high-temperature of 75.2°F (24°C) and an average low-temperature of 51.8°F (11°C). Weather in July »

August, the last month of the summer, in Grand Marais, is also a warm month, with average temperature fluctuating between 51.8°F (11°C) and 73.4°F (23°C). In Grand Marais, the average high-temperature is 73.4°F (23°C), and the average low-temperature is 51.8°F (11°C). Weather in August »

September, the first month of the autumn, in Grand Marais, is also a comfortable month, with average temperature varying between 46.4°F (8°C) and 64.4°F (18°C). The average high-temperature, is 64.4°F (18°C), while the average low-temperature is 46.4°F (8°C). Weather in September »

October, the same as September, is another fresh autumn month in Grand Marais, Michigan, with temperature in the range of an average high of 53.6°F (12°C) and an average low of 37.4°F (3°C). In October, the average high-temperature is 53.6°F (12°C), and the average low-temperature is 37.4°F (3°C). Weather in October »

November, the last month of the autumn, in Grand Marais, is another cold month, with temperature in the range of an average high of 39.2°F (4°C) and an average low of 26.6°F (-3°C). In November, the average high-temperature is 39.2°F (4°C), and the average low-temperature is 26.6°F (-3°C). Weather in November »

The first month of the winter, December, is also a subzero cold month in Grand Marais, Michigan, with average temperature fluctuating between 26.6°F (-3°C) and 12.2°F (-11°C). The average high-temperature, in December, is 26.6°F (-3°C), while the average low-temperature is 12.2°F (-11°C). Weather in December »

What is the coldest month in Grand Marais?

The coldest month in Grand Marais is January, with an average high-temperature of 23°F (-5°C) and an average low-temperature of 6.8°F (-14°C).

How much does it rain in Grand Marais?

Throughout the year, there are 159 rainfall days, and 33.8" (859mm) of precipitation is accumulated.

What are the months with the lowest UV index in Grand Marais?

Months with the lowest UV index in Grand Marais, Michigan, are January, November and December, with an average UV index of 1.

What is the driest month in Grand Marais?

The month with the least rainfall is February when the rain falls for 13 days and typically collects 1.9" (47mm) of precipitation.

What months are the ocean coldest in Grand Marais?

March and April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater in Grand Marais. For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

When are the longest days in Grand Marais?

June has the longest days of the year in Grand Marais, Michigan, with an average of 15.8h of daylight.

What are the months with the highest UV index in Grand Marais?

Months with the highest UV index in Grand Marais, Michigan, are June through August, with an average UV index of 7.

What is the warmest month in Grand Marais?

July is the warmest month in Grand Marais, Michigan, with an average high-temperature of 75.2°F (24°C) and an average low-temperature of 51.8°F (11°C).

What month has the most sunshine in Grand Marais?

July has the most sunshine of the year in Grand Marais, Michigan, with an average of 10h of sunshine.

What month is the ocean warmest in Grand Marais?

August is the month with the warmest seawater, with an average ocean temperature of 59°F (15°C). For swimming, a surface water temperature of 59°F (15°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the rainiest month in Grand Marais?

The month with the most rainfall is September when the rain falls for 13 days and typically aggregates up to 3.6" (92mm) of precipitation.

What is the month with the least sunshine in Grand Marais?

Months with the least sunshine in Grand Marais, Michigan, are November and December, with an average of 2h of sunshine.

What is the month with the shortest days in Grand Marais?

December has the shortest days of the year, with an average of 8.6h of daylight.
Average rainfall - Grand Marais, MI
Average rainfall days - Grand Marais, MI
Average sea temperature - Grand Marais, MI
Average daylight / Average sunshine - Grand Marais, MI
Average UV index - Grand Marais, MI
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