Weather in Thunder Bay in October
Thunder Bay, Canada averages a high of 10.4°C (50.7°F) and low of 5°C (41°F) in October, with 10 rain days and 6.5 hours of daily sunshine. Travel score: 56.7/100 (Mixed). The best time to visit Thunder Bay is August.
High
10°C51°F
Low
5°C41°F
🌧️
10
rain days
☀️
6.5
hrs/day sunshine
💧
77%
humidity
57— Mixed
October in Thunder Bay is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Thunder Bay?
How much does it rain in Thunder Bay in October?
Thunder Bay receives an average of 71.5mm of rainfall across 10 rainy days in October. The annual total is 654.6mm.
What should I pack for Thunder Bay in October?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 10°C
🧶
Sweaters and warm layers
Layer up for comfort
Traveling to Canada in October?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31