October weather forecast
Grand Marais, MI

Weather in October

October, like September, in Grand Marais, Michigan, is another fresh autumn month, with an average temperature varying between 42.3°F (5.7°C) and 51.1°F (10.6°C).

Temperature

In Grand Marais, the average high-temperature in October drops from an enjoyable 65.1°F (18.4°C) in September to a fresh 51.1°F (10.6°C). In October, the average low-temperature is 42.3°F (5.7°C).

Humidity

In Grand Marais, the average relative humidity in October is 81%.

Rainfall

October is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.8" (71mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 3.3 snowfall days, it receives 1.42" (36mm) of snow. Throughout the year, in Grand Marais, there are 108.1 snowfall days, and 48.31" (1227mm) of snow is accumulated.

Ocean temperature

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

Daylight

The average length of the day in October is 10h and 53min.
On the first day of October, sunrise is at 7:42 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 8:24 am and sunset at 6:30 pm EDT.

Sunshine

In Grand Marais, the average sunshine in October is 4.6h.

UV index

In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in October interpret into the following advice:
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 temperature in October in Grand Marais?

In Grand Marais, in October, the average high-temperature is 51.1°F (10.6°C), and the average low-temperature is 42.3°F (5.7°C).

What is the average humidity in October in Grand Marais?

In October, the average relative humidity in Grand Marais is 81%.

What is the wettest month in Grand Marais?

The month with the most rainfall in Grand Marais is October, when the rain falls for 15.3 days and typically aggregates up to 2.8" (71mm) of precipitation.

How many days does it rain in October in Grand Marais?

In Grand Marais, in October, during 15.3 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When does it start to snow in Grand Marais?

October is the first month it typically snows in Grand Marais. Throughout October, in the average 3.3 snowfall days, it receives 1.42" (36mm) of snow.

How cold is the water in October in Grand Marais?

In Grand Marais, Michigan, in October, the average water temperature is 50°F (10°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Grand Marais have in October?

In Grand Marais, the average day length in October is 10h and 53min.

When is the sunrise / sunset in October in Grand Marais?

In October, on the first day of the month, sunrise is at 7:42 am and sunset at 7:24 pm. On the last day of the month, in Grand Marais, sunrise is at 8:24 am and sunset at 6:30 pm EDT.

How long on average sun shines in October in Grand Marais?

The average sunshine duration in October is 4.6h.

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

In October, the average daily maximum UV index in Grand Marais, Michigan, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Grand Marais, MI

Average temperature in October - Grand Marais, MI
  • Average high temperature in October: 51.1°F

The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in October: 42.3°F

The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).

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Average pressure in October
Grand Marais, MI

Average pressure in October - Grand Marais, MI
  • Average pressure in October: 29.95"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in October
Grand Marais, MI

Average wind speed in October - Grand Marais, MI
  • Average wind speed in October: 9.4mph

The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in October
Grand Marais, MI

Average humidity in October - Grand Marais, MI
  • Average humidity in October: 81%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).

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Average rainfall in October
Grand Marais, MI

Average rainfall in October - Grand Marais, MI
  • Average rainfall in October: 2.8"

The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").

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Average rainfall days in October
Grand Marais, MI

Average rainfall days in October - Grand Marais, MI
  • Average rainfall days in October: 15.3 days

The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).

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Average snowfall in October
Grand Marais, MI

Average snowfall in October - Grand Marais, MI
  • Average snowfall in October: 1.42"

The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Grand Marais, MI

Average snowfall days in October - Grand Marais, MI
  • Average snowfall days in October: 3.3 days

The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in October
Grand Marais, MI

Average sea temperature in October - Grand Marais, MI
  • Average sea temperature in October: 50°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 March and April (36°F).

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Average daylight in October /
Average sunshine in October
Grand Marais, MI

Average daylight in October / Average sunshine in October - Grand Marais, MI
  • Average daylight in October: 10h and 53min

The month with the longest days is June (Average daylight: 15h and 47min).
The month with the shortest days is December (Average daylight: 8h and 38min).

  • Average sunshine in October: 4h and 36min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).

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Average sunshine days in October
Grand Marais, MI

Average sunshine days in October - Grand Marais, MI
  • Average sunshine days in October: 11.1 days

The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).

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Average UV index in October
Grand Marais, MI

Average UV index in October - Grand Marais, MI
  • Average UV index in October: 2

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

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Average cloud cover in October
Grand Marais, MI

Average cloud cover in October - Grand Marais, MI
  • Average cloud cover in October: 56

The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in October
Grand Marais, MI

Average visibility in October - Grand Marais, MI
  • Average visibility in October: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).

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