Thunder Bay weather

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The weather guide for Thunder Bay, Ontario shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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

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Compare Thunder Bay weather with the USA

Below the Thunder Bay weather chart shows average maximum daytime temperature for Thunder Bay, Ontario, Canada and the USA (Washington).

Maximum daytime temperature (°C)

Thunder Bay, Ontario, Canada
USA (Washington)
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Dec

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

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Where's warm in Ontario today?

Below are the temperatures expected today at popular destinations in Ontario. Select a destination to compare today's forecast with average weather conditions.

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