Thunder Bay weather in January 2021

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  • -9°C maximum daytime temperature in January in Thunder Bay-9
    -9°C max day temperature
  • 4 hours of sunshine per day
  • 11 days with some rainfall in January in Thunder Bay11
    11 days with some rainfall
  • -21°C minimum night-time temperature in January in Thunder Bay-21
    -21°C min night temperature
  • 9 hours of daylight per day in January in Thunder Bay9
    9 hours of daylight per day
  • No heat & humidity in January in Thunder Bay0
    No heat & humidity
  • 38 mm monthly rainfall in January in Thunder Bay38
    38 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in January in Thunder Bay1
    1 (Low) UV index
  • 2°C sea temperature in January in Thunder Bay2
    2°C sea temperature

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The January weather guide for Thunder Bay, Ontario 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.

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How cold is it in Thunder Bay in January?

Daytime temperatures usually reach -9°C in Thunder Bay in January, falling to -21°C at night.

How sunny is it in Thunder Bay in January?

There are normally 4 hours of bright sunshine each day in Thunder Bay in January - that's 42% of daylight hours.

Is the sea cold around Thunder Bay in January?

The average sea temperature around Thunder Bay in January is 2°C.

Does it rain in Thunder Bay in January?

There are usually 11 days with some rain in Thunder Bay in January and the average monthly rainfall is 38mm. Rain may fall as snow in this month.

Thunder Bay sunrise & sunset times for January 2021

Browse the sunrise & sunset times for Thunder Bay in January 2021. Select a month to view Thunder Bay sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st January 2021 08:49 17:13
Saturday, 16th January 2021 08:43 17:32
Sunday, 31st January 2021 08:27 17:55
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is warm in Ontario in January for 2021/2022?

Below are average maximum temperatures at popular destinations in Ontario in January. Select a destination to see more weather parameters.

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