In October, Thunder Bay typically sees daytime highs of 10.2°C and overnight lows around 0.2°C. Compared to the annual average high of 8.0°C, October runs +2.3°C.
October in Thunder Bay averages a daytime high of 10.2°C and an overnight low of 0.2°C.
October runs +2.3°C compared to Thunder Bay's annual average high of 8.0°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 10.2°C and cooler evenings around 0.2°C.