Mackinac Island weather in October 2025

Expect 55°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Mackinac Island in October. Check more long-term weather averages for Mackinac Island in October before you book your next holiday to Michigan in 2025/2026.

  • 55°F maximum daytime temperature in October in Mackinac Island55
    55°F max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in October in Mackinac Island15
    15 days with some rainfall
  • 37°F minimum night-time temperature in October in Mackinac Island37
    37°F min night temperature
  • 11 hours of daylight per day in October in Mackinac Island11
    11 hours of daylight per day
  • No heat & humidity in October in Mackinac Island0
    No heat & humidity
  • 2.8 inches monthly rainfall in October in Mackinac Island2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Mackinac Island3
    3 (Moderate) UV index
  • 50°F sea temperature in October in Mackinac Island50
    50°F sea temperature

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The October weather guide for Michigan (Mackinac Island) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How warm is it in Mackinac Island in October?

Daytime temperatures usually reach 55°F in Mackinac Island in October, falling to 37°F at night.

How sunny is it in Mackinac Island in October?

There are normally 4 hours of bright sunshine each day in Mackinac Island in October - that's 38% of daylight hours.

How warm is the sea around Mackinac Island in October?

The average sea temperature around Mackinac Island in October is 50°F.

Does it rain in Mackinac Island in October?

There are usually 15 days with some rain in Mackinac Island in October and the average monthly rainfall is 2.8 inches.

Mackinac Island October sunrise & sunset times

Browse the sunrise and sunset times for Mackinac Island in October 2025. Select a month to view Mackinac Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:37 18:18
Thursday, 16th October 2025 06:57 17:50
Friday, 31st October 2025 07:18 17:26

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