Climate and monthly weather forecast
Grand Portage, MN

Weather in January

January, like December, is a freezing cold winter month in Grand Portage, Minnesota, with average temperature fluctuating between 3.7°F (-15.7°C) and 16.2°F (-8.8°C). With an average high-temperature of 16.2°F (-8.8°C) and an average low-temperature of 3.7°F (-15.7°C), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter, in Grand Portage, is also a subzero cold month, with average temperature varying between 18°F (-7.8°C) and 5.2°F (-14.9°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 18°F (-7.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Grand Portage, is still a freezing cold month, with average temperature fluctuating between 29.7°F (-1.3°C) and 18°F (-7.8°C). In March, the average high-temperature rises, from a subzero cold 18°F (-7.8°C) in February, to a still freezing cold 29.7°F (-1.3°C). Weather in March »

Weather in April

April is a wintry spring month in Grand Portage, Minnesota, with average temperature fluctuating between 28.8°F (-1.8°C) and 40.5°F (4.7°C). In April, the average high-temperature rises, from a freezing cold 29.7°F (-1.3°C) in March, to a wintry 40.5°F (4.7°C). Weather in April »

Weather in May

The last month of the spring, May, is a fresh month in Grand Portage, Minnesota, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 39°F (3.9°C). In May, the average high-temperature increases, from a cold 40.5°F (4.7°C) in April, to a fresh 54.3°F (12.4°C). Weather in May »

Weather in June

The first month of the summer, June, is an enjoyable month in Grand Portage, Minnesota, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 46°F (7.8°C). In Grand Portage, the average high-temperature in June marginally rises, from a fresh 54.3°F (12.4°C) in May, to a comfortable 62.2°F (16.8°C). Weather in June »

Weather in July

July in Grand Portage, Minnesota, is an agreeable summer month, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 53.6°F (12°C). July and August, with an average high-temperature of 70°F (21.1°C), are the warmest months. Weather in July »

Weather in August

August, the last month of the summer, in Grand Portage, is also an agreeable month, with average temperature fluctuating between 70°F (21.1°C) and 54.3°F (12.4°C). July and August, with an average high-temperature of 70°F (21.1°C), are the warmest months. Weather in August »

Weather in September

September, the first month of the autumn, in Grand Portage, is also an enjoyable month, with temperature in the range of an average high of 61.7°F (16.5°C) and an average low of 48°F (8.9°C). In Grand Portage, Minnesota, the average high-temperature marginally drops, from an agreeable 70°F (21.1°C) in August, to a comfortable 61.7°F (16.5°C). Weather in September »

Weather in October

October, the same as September, in Grand Portage, Minnesota, is a frosty autumn month, with temperature in the range of an average high of 47.5°F (8.6°C) and an average low of 38.3°F (3.5°C). In October, the average high-temperature decreases, from an enjoyable 61.7°F (16.5°C) in September, to a chilly 47.5°F (8.6°C). Weather in October »

Weather in November

November, the last month of the autumn, in Grand Portage, is also a wintry month, with temperature in the range of an average high of 34.2°F (1.2°C) and an average low of 25.7°F (-3.5°C). In Grand Portage, the average high-temperature in November drops, from a chilly 47.5°F (8.6°C) in October, to a wintry 34.2°F (1.2°C). Weather in November »

Weather in December

December, the first month of the winter, in Grand Portage, is still a freezing cold month, with average temperature varying between 21.6°F (-5.8°C) and 12.6°F (-10.8°C). In Grand Portage, the average high-temperature in December decreases, from a wintry 34.2°F (1.2°C) in November, to a subzero cold 21.6°F (-5.8°C). Weather in December »
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FAQ

What is the coldest month in Grand Portage?

With an average high-temperature of 16.2°F (-8.8°C) and an average low-temperature of 3.7°F (-15.7°C), January is the coldest month.

What are the most humid months in Grand Portage?

Months with the highest humidity in Grand Portage, Minnesota, are January and February, with an average relative humidity of 90%.

What is the driest month in Grand Portage?

Months with the least rainfall are January and February Rain falls for 4.5 days and accumulates 1.06" (27mm) of rain.

How much does it rain in Grand Portage?

In Grand Portage, Minnesota, during the entire year, the rain falls for 115 days and collects up to 18.19" (462mm) of precipitation.

When does it snow in Grand Portage?

Months with snowfall are January through May, October through December.

What is the snowiest month in Grand Portage?

The month with the most snowfall in Grand Portage is January when snow falls for 21.6 days and typically aggregates up to 7.76" (197mm) of snow.

How many days does it snow in Grand Portage?

Throughout the year, in Grand Portage, Minnesota, there are 104.1 snowfall days, and 39.84" (1012mm) of snow is accumulated.

What months are the ocean coldest in Grand Portage?

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater in Grand Portage.

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

The month with the least sunshine is January, with an average of 3h of sunshine.

What is the month with the lowest UV index in Grand Portage?

Months with the lowest UV index in Grand Portage, Minnesota, are January through March, November and December, with an average maximum UV index of 1.

What is the least humid month in Grand Portage?

With an average relative humidity of 70%, May is the least humid month in Grand Portage, Minnesota.

What is the wettest month in Grand Portage?

The wettest months in Grand Portage, Minnesota, are May and October, with an average 1.77" (45mm) of rainfall.

When it does not snow in Grand Portage?

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

When are the longest days in Grand Portage?

With an average of 16h of daylight, June has the longest days of the year in Grand Portage.

What month has the most sunshine in Grand Portage?

The month with the most sunshine is June, with an average of 10.4h of sunshine.

What is the warmest month in Grand Portage?

July and August, with an average high-temperature of 70°F (21.1°C), are warmest months in Grand Portage.

When is the highest UV index in Grand Portage?

With an average maximum UV index of 5, July is the month with the highest UV index.

What is the month with the warmest ocean in Grand Portage?

August is the month with the warmest seawater, with an average ocean temperature of 59°F (15°C).

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

December has the shortest days of the year, with an average of 8.5h of daylight.

Average temperature
Grand Portage, MN

Average temperature - Grand Portage, MN

The warmest months (with the highest average high temperature) are July and August (70°F).
The month with the lowest average high temperature is January (16.2°F).

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (3.7°F).

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Average pressure
Grand Portage, MN

Average pressure - Grand Portage, MN

The month with the highest atmospheric pressure is March (30.09").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed
Grand Portage, MN

Average wind speed - Grand Portage, MN

The windiest month (with the highest average wind speed) is December (9.2mph).
The calmest month (with the lowest average wind speed) is June (6.2mph).

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Average humidity
Grand Portage, MN

Average humidity - Grand Portage, MN

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).

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Average rainfall
Grand Portage, MN

Average rainfall - Grand Portage, MN

The wettest months (with the highest rainfall) are May and October (1.77").
The driest months (with the least rainfall) are January and February (1.06").

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Average rainfall days
Grand Portage, MN

Average rainfall days - Grand Portage, MN

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is February (4.2 days).

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Average snowfall
Grand Portage, MN

Average snowfall - Grand Portage, MN

The month with the highest snowfall is January (7.76").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Grand Portage, MN

Average snowfall days - Grand Portage, MN

The month with the highest number of snowfall days is January (21.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature
Grand Portage, MN

Average sea temperature - Grand Portage, MN

The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

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Average daylight / Average sunshine
Grand Portage, MN

Average daylight / Average sunshine - Grand Portage, MN

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

The month with the most sunshine is June (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 3h).

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Average sunshine days
Grand Portage, MN

Average sunshine days - Grand Portage, MN

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is March (9.8 days).

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Average UV index
Grand Portage, MN

Average UV index - Grand Portage, MN

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

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Average visibility
Grand Portage, MN

Average visibility - Grand Portage, MN

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

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