Isle Royale weather in October 2025

Expect 52°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Isle Royale in October. Check more long-term weather averages for Isle Royale in October before you book your next holiday to Michigan in 2025/2026.

  • 52°F maximum daytime temperature in October in Isle Royale52
    52°F max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in October in Isle Royale11
    11 days with some rainfall
  • 36°F minimum night-time temperature in October in Isle Royale36
    36°F min night temperature
  • 11 hours of daylight per day in October in Isle Royale11
    11 hours of daylight per day
  • No heat & humidity in October in Isle Royale0
    No heat & humidity
  • 2.7 inches monthly rainfall in October in Isle Royale2.7
    2.7 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Isle Royale2
    2 (Low) UV index
  • 46°F sea temperature in October in Isle Royale46
    46°F sea temperature

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The October weather guide for Michigan (Isle Royale) 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 Isle Royale in October?

Daytime temperatures usually reach 52°F in Isle Royale in October, falling to 36°F at night.

How sunny is it in Isle Royale in October?

There are normally 4 hours of bright sunshine each day in Isle Royale in October - that's 36% of daylight hours.

How warm is the sea around Isle Royale in October?

The average sea temperature around Isle Royale in October is 46°F.

Does it rain in Isle Royale in October?

There are usually 11 days with some rain in Isle Royale in October and the average monthly rainfall is 2.7 inches.

Isle Royale October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:54 18:33
Thursday, 16th October 2025 07:16 18:03
Friday, 31st October 2025 07:38 17:37

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