Isle Royale weather in January 2026

Expect daytime maximum temperatures of -8°C in Isle Royale in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 63 mm of rainfall in the month, which might fall as snow.

  • -8°C maximum daytime temperature in January in Isle Royale-8
    -8°C max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in January in Isle Royale10
    10 days with some rainfall
  • -18°C minimum night-time temperature in January in Isle Royale-18
    -18°C min night temperature
  • 9 hours of daylight per day in January in Isle Royale9
    9 hours of daylight per day
  • No heat & humidity in January in Isle Royale0
    No heat & humidity
  • 63 mm monthly rainfall in January in Isle Royale63
    63 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Isle Royale1
    1 (Low) UV index
  • 2°C sea temperature in January in Isle Royale2
    2°C sea temperature

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Isle Royale by month

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The January 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 / mm)  |  Imperial (°F / inches)

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How cold is it in Isle Royale in January?

Daytime temperatures usually reach -8°C in Isle Royale in January, falling to -18°C at night.

How sunny is it in Isle Royale in January?

There are normally 4 hours of bright sunshine each day in Isle Royale in January - that's 41% of daylight hours.

Is the sea cold around Isle Royale in January?

The average sea temperature around Isle Royale in January is 2°C.

Does it rain in Isle Royale in January?

There are usually 10 days with some rain in Isle Royale in January and the average monthly rainfall is 63mm. Rain may fall as snow in this month.

Isle Royale January sunrise & sunset times

Browse the sunrise and sunset times for Isle Royale in January 2026. Select a month to view Isle Royale sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 08:44 17:11
Friday, 16th January 2026 08:39 17:30
Saturday, 31st January 2026 08:23 17:53

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