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Thunder Bay weather in September 2020
- 1717°C max day temperature
- 1313 days with some rainfall
- 66°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 8888 mm of monthly rainfall
- 55 (Moderate) UV index
- 1313°C sea temperature
The September 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.
Expires at 23:59 on Saturday 30th Nov 2019
How warm is it in Thunder Bay in September?
Daytime temperatures usually reach 17°C in Thunder Bay in September, falling to 6°C at night.
How sunny is it in Thunder Bay in September?
There are normally 5 hours of bright sunshine each day in Thunder Bay in September - that's 42% of daylight hours.
How warm is the sea around Thunder Bay in September?
The average sea temperature around Thunder Bay in September is 13°C.
Does it rain in Thunder Bay in September?
There are usually 13 days with some rain in Thunder Bay in September and the average monthly rainfall is 88mm.
Thunder Bay sunrise & sunset times for September 2020
Browse the sunrise & sunset times for Thunder Bay in September 2020. Select a month to view Thunder Bay sunrise & sunset times for the next twelve months.
|Date||Sunrise times||Sunset times|
|Tuesday, 1st September 2020||07:15||20:37|
|Tuesday, 15th September 2020||07:35||20:08|
|Wednesday, 30th September 2020||07:56||19:37|
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Metric (°C / mm) | Imperial (°F / inches)
Discover more about Canada
Where's hot in Ontario in September?
Below are average maximum temperatures at popular destinations in Ontario in September. Select a destination to see more weather parameters.
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