October weather forecast
Grand Portage, MN

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).

Temperature

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). In October, in Grand Portage, the average low-temperature is 38.3°F (3.5°C).

Humidity

The average relative humidity is 80%.

Rainfall

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

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows in Grand Portage. Throughout October, in the average 2.5 snowfall days, it receives 0.98" (25mm) of snow. Throughout the year, in Grand Portage, there are 104.1 snowfall days, and 39.84" (1012mm) of snow is accumulated.

Ocean temperature

In Grand Portage, the average seawater temperature is 46.4°F (8°C).
Note: Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Grand Portage, the average length of the day is 10.8h.

Sunshine

In Grand Portage, the average sunshine is 5.5h.

UV index

In Grand Portage, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 2 in October 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. 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. 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 October in Grand Portage?

In Grand Portage, Minnesota, the average relative humidity in October is 80%.

What is the rainiest month in Grand Portage?

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

How much does it rain in Grand Portage in October?

In October, the rain falls for 11.3 days. Throughout October, 1.77" (45mm) of precipitation is accumulated.

When does it start snowing in Grand Portage?

October is the first month it typically snows in Grand Portage, Minnesota. Throughout October, in the average 2.5 snowfall days, it receives 0.98" (25mm) of snow.

What is the water temperature in October in Grand Portage?

In October, the average ocean temperature in Grand Portage, Minnesota, is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

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

In Grand Portage, Minnesota, the average length of the day in October is 10.8h.

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

The average sunshine in October is 5.5h.

What is the UV index intensity in October in Grand Portage?

In Grand Portage, the average daily maximum UV index in October is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the UV radiation.

Average temperature in October
Grand Portage, MN

Average temperature in October - Grand Portage, MN
  • Average high temperature in October: 47.5°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 October: 38.3°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 October
Grand Portage, MN

Average pressure in October - Grand Portage, MN
  • Average pressure in October: 29.94"

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 October
Grand Portage, MN

Average wind speed in October - Grand Portage, MN
  • Average wind speed in October: 8.5mph

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 October
Grand Portage, MN

Average humidity in October - Grand Portage, MN
  • Average humidity in October: 80%

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 October
Grand Portage, MN

Average rainfall in October - Grand Portage, MN
  • Average rainfall in October: 1.77"

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 October
Grand Portage, MN

Average rainfall days in October - Grand Portage, MN
  • Average rainfall days in October: 11.3 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 October
Grand Portage, MN

Average snowfall in October - Grand Portage, MN
  • Average snowfall in October: 0.98"

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 October
Grand Portage, MN

Average snowfall days in October - Grand Portage, MN
  • Average snowfall days in October: 2.5 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 October
Grand Portage, MN

Average sea temperature in October - Grand Portage, MN
  • Average sea temperature in October: 46°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 October /
Average sunshine in October
Grand Portage, MN

Average daylight in October / Average sunshine in October - Grand Portage, MN
  • Average daylight in October: 10.8h

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 October: 5.5h

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 October
Grand Portage, MN

Average sunshine days in October - Grand Portage, MN
  • Average sunshine days in October: 16.7 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 October
Grand Portage, MN

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

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 October
Grand Portage, MN

Average cloud cover in October - Grand Portage, MN
  • Average cloud cover in October: 50

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 October
Grand Portage, MN

Average visibility in October - Grand Portage, MN
  • Average visibility in October: 6mi

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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