Climate and monthly weather forecast
Grand Marais, MN

Large rocks and pebbles on the part of Lake Superior in the Grand Marais region of Minnesota
Large rocks and pebbles on the part of Lake Superior in the Grand Marais region of Minnesota

Weather in January

January, like December, is another subzero cold winter month in Grand Marais, Minnesota, with an average temperature ranging between max 18.3°F (-7.6°C) and min 8.1°F (-13.3°C). January is the coldest month, with an average high-temperature of 18.3°F (-7.6°C) and an average low-temperature of 8.1°F (-13.3°C). Weather in January »

Weather in February

February, the last month of the winter in Grand Marais, is another freezing cold month, with temperature in the range of an average high of 20.1°F (-6.6°C) and an average low of 10°F (-12.2°C). In Grand Marais, the average high-temperature in February is almost the same as in January - a still freezing cold 20.1°F (-6.6°C). Weather in February »

Weather in March

The first month of the spring, March, is also a subzero cold month in Grand Marais, Minnesota, with an average temperature varying between 21.6°F (-5.8°C) and 30.6°F (-0.8°C). In March, the average high-temperature rises from 20.1°F (-6.6°C) in February to a still subzero cold 30.6°F (-0.8°C). Weather in March »

Weather in April

April in Grand Marais, Minnesota, is a cold spring month, with an average temperature ranging between min 30.6°F (-0.8°C) and max 39.7°F (4.3°C). In Grand Marais, the average high-temperature in April rises from a freezing cold 30.6°F (-0.8°C) in March to a cold 39.7°F (4.3°C). Weather in April »

Weather in May

May, the last month of the spring in Grand Marais, is a fresh month, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 51.4°F (10.8°C). In Grand Marais, Minnesota, the average high-temperature in May rises from a wintry 39.7°F (4.3°C) in April to a cool 51.4°F (10.8°C). Weather in May »

Weather in June

June, the first month of the summer in Grand Marais, is a mild month, with an average temperature varying between 58.6°F (14.8°C) and 47.1°F (8.4°C). In June, the average high-temperature slightly increases from a cool 51.4°F (10.8°C) in May to a mild 58.6°F (14.8°C). Weather in June »

Weather in July

July is a comfortable summer month in Grand Marais, Minnesota, with an average temperature varying between 66.6°F (19.2°C) and 54.7°F (12.6°C). In July, the average high-temperature marginally rises from a mild 58.6°F (14.8°C) in June to an enjoyable 66.6°F (19.2°C). Weather in July »

Weather in August

The last month of the summer, August, is a pleasant month in Grand Marais, Minnesota, with an average temperature fluctuating between 68°F (20°C) and 56.5°F (13.6°C). The warmest month is August, with an average high-temperature of 68°F (20°C) and an average low-temperature of 56.5°F (13.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Grand Marais, is still a comfortable month, with temperature in the range of an average low of 50.7°F (10.4°C) and an average high of 60.8°F (16°C). In Grand Marais, the average high-temperature in September slightly decreases from a pleasant 68°F (20°C) in August to a comfortable 60.8°F (16°C). Weather in September »

Weather in October

October, like September, is another chilly autumn month in Grand Marais, Minnesota, with an average temperature varying between 39.9°F (4.4°C) and 47.3°F (8.5°C). In October, the average high-temperature drops from a comfortable 60.8°F (16°C) in September to a chilly 47.3°F (8.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cold month in Grand Marais, Minnesota, with an average temperature ranging between max 35.2°F (1.8°C) and min 28°F (-2.2°C). In November, the average high-temperature decreases from a chilly 47.3°F (8.5°C) in October to a cold 35.2°F (1.8°C). Weather in November »

Weather in December

December, the first month of the winter in Grand Marais, is still a freezing cold month, with an average temperature fluctuating between 15.6°F (-9.1°C) and 23.7°F (-4.6°C). In Grand Marais, the average high-temperature in December drops from a wintry 35.2°F (1.8°C) in November to a freezing cold 23.7°F (-4.6°C). Weather in December »
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FAQ

What is the coldest month in Grand Marais?

January is the coldest month, with an average high-temperature of 18.3°F (-7.6°C) and an average low-temperature of 8.1°F (-13.3°C).

What is the most humid month in Grand Marais?

The most humid month in Grand Marais, Minnesota, is January, with an average relative humidity of 88%.

How many days does it rain in Grand Marais?

In Grand Marais, Minnesota, during the entire year, the rain falls for 134.4 days and collects up to 21.42" (544mm) of precipitation.

When does it snow in Grand Marais?

January through May, October through December are months with snowfall in Grand Marais.

How many days does it snow in Grand Marais?

Throughout the year, there are 87.3 snowfall days, and 30.2" (767mm) of snow is accumulated.

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

January has the least sunshine of the year in Grand Marais, Minnesota, with an average of 3.3h of sunshine.

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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

What is the driest month in Grand Marais?

The month with the least rainfall in Grand Marais is February, when the rain falls for 4.3 days and typically collects 1.02" (26mm) of precipitation.

When is Daylight Saving Time (DST) in Grand Marais?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the least humid month in Grand Marais?

The least humid month is May, with an average relative humidity of 74%.

When it does not snow in Grand Marais?

In Grand Marais, Minnesota, snow does not fall in June through September.

When are the longest days in Grand Marais?

The month with the longest days in Grand Marais is June, with an average of 15h and 56min of daylight.

What is the wettest month in Grand Marais?

July is the month with the most rainfall in Grand Marais. Rain falls for 15.4 days and accumulates 2.36" (60mm) of precipitation.

What month has the most sunshine in Grand Marais?

With an average of 10.3h of sunshine, July has the most sunshine of the year.

When is the highest UV index in Grand Marais?

July is the month with the highest UV index in Grand Marais, Minnesota, with an average maximum UV index of 5.

What is the warmest month in Grand Marais?

With an average high-temperature of 68°F (20°C) and an average low-temperature of 56.5°F (13.6°C), August is the warmest month in Grand Marais.

When does it snow the most in Grand Marais?

December is the month with the most snowfall. Snow falls for 17.1 days and accumulates 6.5" (165mm) of snow.

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

December has the shortest days of the year, with an average of 8h and 29min of daylight.

Average temperature
Grand Marais, MN

Average temperature - Grand Marais, MN

The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is January (18.3°F).

The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

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Average pressure
Grand Marais, MN

Average pressure - Grand Marais, MN

The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed
Grand Marais, MN

Average wind speed - Grand Marais, MN

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

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Average rainfall
Grand Marais, MN

Average rainfall - Grand Marais, MN

The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is February (1.02").

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Average rainfall days
Grand Marais, MN

Average rainfall days - Grand Marais, MN

The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall
Grand Marais, MN

Average snowfall - Grand Marais, MN

The month with the highest snowfall is December (6.5").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Grand Marais, MN

Average snowfall days - Grand Marais, MN

The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Grand Marais, MN

Average daylight / Average sunshine - Grand Marais, MN

The month with the longest days is June (Average daylight: 15h and 56min).
The month with the shortest days is December (Average daylight: 8h and 29min).

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).

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Average sunshine days
Grand Marais, MN

Average sunshine days - Grand Marais, MN

The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is January (10.3 days).

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Average UV index
Grand Marais, MN

Average UV index - Grand Marais, MN

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average visibility
Grand Marais, MN

Average visibility - Grand Marais, MN

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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