In October, Saint John typically sees daytime highs of 12.7°C and overnight lows around 3.3°C. Compared to the annual average high of 10.4°C, October runs +2.3°C.
October in Saint John averages a daytime high of 12.7°C and an overnight low of 3.3°C.
October runs +2.3°C compared to Saint John's annual average high of 10.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 12.7°C and cooler evenings around 3.3°C.