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Thunder Bay weather in January 2025
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 2025/2026.
- -9-9°C max day temperature
- 4 hours of sunshine per day
- 1111 days with some rainfall
- -21-21°C min night temperature
- 99 hours of daylight per day
- 0No heat & humidity
- 3838 mm of monthly rainfall
- 11 (Low) UV index
- 22°C sea temperature
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The January weather guide for Ontario (Thunder Bay) 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)
More about Canada
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 January sunrise & sunset times
Browse the sunrise and sunset times for Thunder Bay in January 2025. Select a month to view Thunder Bay sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st January 2025 | 08:49 | 17:13 |
Thursday, 16th January 2025 | 08:42 | 17:32 |
Friday, 31st January 2025 | 08:27 | 17:55 |
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