October weather forecast and climate
Mackinac Island, MI

What is the temperature in October in Mackinac Island?

The average high-temperature, in October, in Mackinac Island, Michigan, is 55.4°F (13°C), while the average low-temperature is 37.4°F (3°C).

How much does it rain in Mackinac Island in October?

In Mackinac Island, Michigan, in October, it is raining for 15 days, with typically 2.8" (72mm) of accumulated precipitation.

What is the water temperature in October in Mackinac Island?

The average seawater temperature, in October, in Mackinac Island, is 50°F (10°C). 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.
Average temperature in October - Mackinac Island, MI
  • Average high temperature in October: 55°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25°F).

  • Average low temperature in October: 37°F

Months with the highest average low temperature are July and August (54°F).
The coldest month (with the lowest average low temperature) is February (5°F).

Average rainfall in October - Mackinac Island, MI
  • Average rainfall in October: 2.8"

The wettest month (with the highest rainfall) is September (3.9").
The driest month (with the lowest rainfall) is February (1.5").

Average rainfall days in October - Mackinac Island, MI
  • Average rainfall days in October: 15 days

The month with the highest number of rainy days is December (20 days).
The month with the lowest number of rainy days is July (10 days).

Average sea temperature in October - Mackinac Island, MI
  • Average sea temperature in October: 50°F

The best month for swimming (with the highest average sea temperature) is August (61°F).
Coldest months (with the lowest average sea temperature) are February, March and April (36°F).

Average daylight in October / Average sunshine in October - Mackinac Island, MI
  • Average daylight in October: 10.9h

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).

  • Average sunshine in October: 4h

The month with most sunshine is July (Average sunshine: 10h).
Months with least sunshine are November and December (Average sunshine: 2).

Average UV index in October - Mackinac Island, MI
  • Average UV index in October: 3

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).

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