April weather forecast
Grand Portage, MN

Weather in April

April is a wintry spring month in Grand Portage, Minnesota, with an average temperature ranging between max 40.5°F (4.7°C) and min 28.8°F (-1.8°C).

Temperature

In Grand Portage, Minnesota, the average high-temperature in April increases from a subzero cold 29.7°F (-1.3°C) in March to a cold 40.5°F (4.7°C). In Grand Portage, the average low-temperature is 28.8°F (-1.8°C).

Humidity

The average relative humidity in April is 79%.

Rainfall

In Grand Portage, Minnesota, during April, the rain falls for 10.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. In Grand Portage, during the entire year, the rain falls for 115 days and collects up to 18.19" (462mm) of precipitation.

Snowfall

Months with snowfall in Grand Portage, Minnesota, are January through May, October through December. In Grand Portage, in April, during 9.7 snowfall days, 6.5" (165mm) of snow is typically accumulated. 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 in Grand Portage.
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

The average length of the day in April is 13h and 41min.
On the first day of April, sunrise is at 6:36 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:10 pm CDT.

Sunshine

The average sunshine in April is 6.3h.

UV index

In April, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in April transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Grand Portage?

In Grand Portage, the average relative humidity in April is 79%.

How many days does it rain in April in Grand Portage?

In April, in Grand Portage, Minnesota, the rain falls for 10.2 days. Throughout April, 1.73" (44mm) of precipitation is accumulated.

How much does it snow in Grand Portage in April?

In Grand Portage, in April, snow falls for 9.7 days, with typically accumulated 6.5" (165mm) of snow.

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.

How cold is the water in April in Grand Portage?

In Grand Portage, in April, the average water temperature is 35.6°F (2°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Grand Portage have in April?

The average day length in April in Grand Portage, Minnesota, is 13h and 41min.

When are sunrise and sunset in April in Grand Portage?

In April, on the first day of the month, sunrise is at 6:36 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:10 pm CDT.

How many hours of sunshine does Grand Portage have in April?

In April, the average sunshine duration is 6.3h.

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

In April, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.

Average temperature in April
Grand Portage, MN

Average temperature in April - Grand Portage, MN
  • Average high temperature in April: 40.5°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 April: 28.8°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 April
Grand Portage, MN

Average pressure in April - Grand Portage, MN
  • Average pressure in April: 30"Hg

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

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Average wind speed in April
Grand Portage, MN

Average wind speed in April - Grand Portage, MN
  • Average wind speed in April: 8mph

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 April
Grand Portage, MN

Average humidity in April - Grand Portage, MN
  • Average humidity in April: 79%

The 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 April
Grand Portage, MN

Average rainfall in April - Grand Portage, MN
  • Average rainfall in April: 1.73"

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 April
Grand Portage, MN

Average rainfall days in April - Grand Portage, MN
  • Average rainfall days in April: 10.2 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 April
Grand Portage, MN

Average snowfall in April - Grand Portage, MN
  • Average snowfall in April: 6.5"

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

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Average snowfall days in April
Grand Portage, MN

Average snowfall days in April - Grand Portage, MN
  • Average snowfall days in April: 9.7 days

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

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Average sea temperature in April
Grand Portage, MN

Average sea temperature in April - Grand Portage, MN
  • Average sea temperature in April: 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 April /
Average sunshine in April
Grand Portage, MN

Average daylight in April / Average sunshine in April - Grand Portage, MN
  • Average daylight in April: 13h and 41min

The month with the longest days is June (Average daylight: 15h and 58min).
The month with the shortest days is December (Average daylight: 8h and 28min).

  • Average sunshine in April: 6.3h

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 April
Grand Portage, MN

Average sunshine days in April - Grand Portage, MN
  • Average sunshine days in April: 12.7 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 April
Grand Portage, MN

Average UV index in April - Grand Portage, MN
  • Average UV index in April: 2

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

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Average cloud cover in April
Grand Portage, MN

Average cloud cover in April - Grand Portage, MN
  • Average cloud cover in April: 54

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 April
Grand Portage, MN

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

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

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