March weather forecast
Grand Portage, MN

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).

Temperature

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). In March, the average low-temperature is 18°F (-7.8°C).

Humidity

In March, the average relative humidity in Grand Portage is 87%.

Rainfall

In Grand Portage, during 10.6 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, there are 115 rainfall days, and 18.19" (462mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Grand Portage are January through May, October through December. In Grand Portage, in March, snow falls for 17.2 days, with typically accumulated 5.2" (132mm) of snow. In Grand Portage, during the entire year, snow falls for 104.1 days, and aggregates up to 39.84" (1012mm) of snow.

Ocean temperature

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

Daylight

In Grand Portage, Minnesota, the average length of the day in March is 12h.

Sunshine

The average sunshine in March is 4.5h.

UV index

Months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 1 in March transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in March in Grand Portage?

The average relative humidity in March in Grand Portage is 87%.

How much does it rain in Grand Portage in March?

In Grand Portage, during March, the rain falls for 10.6 days and regularly aggregates up to 1.34" (34mm) of precipitation.

How many days does it snow in March in Grand Portage?

In Grand Portage, in March, snow falls for 17.2 days, with typically accumulated 5.2" (132mm) of snow.

When is 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, Minnesota.

How cold is the water in March in Grand Portage?

In March, the average ocean temperature in Grand Portage, Minnesota, is 35.6°F (2°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the average length of the day in March in Grand Portage?

In Grand Portage, the average length of the day in March is 12h.

How long on average sun shines in March in Grand Portage?

In Grand Portage, the average sunshine in March is 4.5h.

What are the months 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.

How high is the UV index in March in Grand Portage?

In Grand Portage, the average daily maximum UV index in March is 1. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.

Average temperature in March
Grand Portage, MN

Average temperature in March - Grand Portage, MN
  • Average high temperature in March: 29.7°F

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).

  • Average low temperature in March: 18°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 in March
Grand Portage, MN

Average pressure in March - Grand Portage, MN
  • Average pressure in March: 30.09"

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 in March
Grand Portage, MN

Average wind speed in March - Grand Portage, MN
  • Average wind speed in March: 7.9mph

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 in March
Grand Portage, MN

Average humidity in March - Grand Portage, MN
  • Average humidity in March: 87%

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 in March
Grand Portage, MN

Average rainfall in March - Grand Portage, MN
  • Average rainfall in March: 1.34"

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 in March
Grand Portage, MN

Average rainfall days in March - Grand Portage, MN
  • Average rainfall days in March: 10.6 days

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 in March
Grand Portage, MN

Average snowfall in March - Grand Portage, MN
  • Average snowfall in March: 5.2"

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 in March
Grand Portage, MN

Average snowfall days in March - Grand Portage, MN
  • Average snowfall days in March: 17.2 days

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 in March
Grand Portage, MN

Average sea temperature in March - Grand Portage, MN
  • Average sea temperature in March: 36°F

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 in March /
Average sunshine in March
Grand Portage, MN

Average daylight in March / Average sunshine in March - Grand Portage, MN
  • Average daylight in March: 12h

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

  • Average sunshine in March: 4.5h

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 in March
Grand Portage, MN

Average sunshine days in March - Grand Portage, MN
  • Average sunshine days in March: 9.8 days

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 in March
Grand Portage, MN

Average UV index in March - Grand Portage, MN
  • Average UV index in March: 1

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 cloud cover in March
Grand Portage, MN

Average cloud cover in March - Grand Portage, MN
  • Average cloud cover in March: 65

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in March
Grand Portage, MN

Average visibility in March - Grand Portage, MN
  • Average visibility in March: 5mi

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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