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Thunder Bay weather in October 2025
Expect daytime maximum temperatures of 50°F in Thunder Bay, Ontario in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 11 days with some rainfall and typically 2.4 inches of rainfall in the month.
- 50°F max day temperature
50
- 4 hours of sunshine per day
- 11 days with some rainfall
11
- 34°F min night temperature
34
- 11 hours of daylight per day
11
- No heat & humidity
0
- 2.4 inches of monthly rainfall
2.4
- 2 (Low) UV index
2
- 46°F sea temperature
46
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Recommended for Ontario
The October 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) | Imperial (°F)
More about Ontario
How warm is it in Thunder Bay in October?
Daytime temperatures usually reach 50°F in Thunder Bay in October, falling to 34°F at night.
How sunny is it in Thunder Bay in October?
There are normally 4 hours of bright sunshine each day in Thunder Bay in October - that's 36% of daylight hours.
How warm is the sea around Thunder Bay in October?
The average sea temperature around Thunder Bay in October is 46°F.
Does it rain in Thunder Bay in October?
There are usually 11 days with some rain in Thunder Bay in October and the average monthly rainfall is 2.4 inches.
Thunder Bay October sunrise & sunset times
Browse the sunrise and sunset times for Thunder Bay in October 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 October 2025 | 06:57 | 18:35 |
Thursday, 16th October 2025 | 07:19 | 18:05 |
Friday, 31st October 2025 | 07:42 | 17:39 |
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