Thunder Bay weather in January 2020

  • -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

Going to Thunder Bay? Find the best month to visit Thunder Bay based on the weather.

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Expect -9°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Thunder Bay in January. Check more long-term weather averages for Thunder Bay in January before you book your next holiday to Ontario in 2020/2021.

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More about Thunder Bay

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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.

Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Thunder Bay weather in January

The average maximum daytime temperature in Thunder Bay in January is a very cold -9°C (16°F). The average night-time temperature is usually a very cold -21°C (-6°F). There are usually 4 hours of bright sunshine each day, which represents 42% of the 9 hours of daylight.

Expect 38mm (1.5 inches) of rainfall across the whole of January with 11 days with some rain falling. Maximum UV levels will be low (1 UV index) at midday when the skies are clear.

The average sea temperature in and around Thunder Bay in January is 2°C (36°F).

Thunder Bay sunrise & sunset times for January 2020

Browse the sunrise & sunset times for Thunder Bay in January 2020. Select a month to view Thunder Bay sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2020 08:49 17:12
Thursday, 2nd January 2020 08:49 17:13
Friday, 3rd January 2020 08:49 17:14
Saturday, 4th January 2020 08:48 17:15
Sunday, 5th January 2020 08:48 17:17
Monday, 6th January 2020 08:48 17:18
Tuesday, 7th January 2020 08:48 17:19
Wednesday, 8th January 2020 08:47 17:20
Thursday, 9th January 2020 08:47 17:21
Friday, 10th January 2020 08:47 17:23
Saturday, 11th January 2020 08:46 17:24
Sunday, 12th January 2020 08:46 17:25
Monday, 13th January 2020 08:45 17:26
Tuesday, 14th January 2020 08:44 17:28
Wednesday, 15th January 2020 08:44 17:29
Thursday, 16th January 2020 08:43 17:31
Friday, 17th January 2020 08:42 17:32
Saturday, 18th January 2020 08:42 17:34
Sunday, 19th January 2020 08:41 17:35
Monday, 20th January 2020 08:40 17:36
Tuesday, 21st January 2020 08:39 17:38
Wednesday, 22nd January 2020 08:38 17:40
Thursday, 23rd January 2020 08:37 17:41
Friday, 24th January 2020 08:36 17:43
Saturday, 25th January 2020 08:35 17:44
Sunday, 26th January 2020 08:34 17:46
Monday, 27th January 2020 08:33 17:47
Tuesday, 28th January 2020 08:31 17:49
Wednesday, 29th January 2020 08:30 17:50
Thursday, 30th January 2020 08:29 17:52
Friday, 31st January 2020 08:28 17:54
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Popular Ontario destinations

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

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