Grand Marais weather in October 2025

Expect 12°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Grand Marais in October. Check more long-term weather averages for Grand Marais in October before you book your next holiday to Michigan in 2025/2026.

  • 12°C maximum daytime temperature in October in Grand Marais12
    12°C max day temperature
  • 4 hours of sunshine per day
  • 14 days with some rainfall in October in Grand Marais14
    14 days with some rainfall
  • 3°C minimum night-time temperature in October in Grand Marais3
    3°C min night temperature
  • 11 hours of daylight per day in October in Grand Marais11
    11 hours of daylight per day
  • No heat & humidity in October in Grand Marais0
    No heat & humidity
  • 80 mm monthly rainfall in October in Grand Marais80
    80 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Grand Marais3
    3 (Moderate) UV index
  • 10°C sea temperature in October in Grand Marais10
    10°C sea temperature

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The October weather guide for Michigan (Grand Marais) 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 / mm)  |  Imperial (°F / inches)

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More about the USA

How warm is it in Grand Marais in October?

Daytime temperatures usually reach 12°C in Grand Marais in October, falling to 3°C at night.

How sunny is it in Grand Marais in October?

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

Is the sea cold around Grand Marais in October?

The average sea temperature around Grand Marais in October is 10°C.

Does it rain in Grand Marais in October?

There are usually 14 days with some rain in Grand Marais in October and the average monthly rainfall is 80mm.

Grand Marais October sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:43 18:23
Thursday, 16th October 2025 07:03 17:55
Friday, 31st October 2025 07:25 17:29

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