In June, St. John's typically sees daytime highs of 15.8°C and overnight lows around 6.2°C. Compared to the annual average high of 9.1°C, June runs +6.7°C.
June in St. John's averages a daytime high of 15.8°C and an overnight low of 6.2°C.
June runs +6.7°C compared to St. John's's annual average high of 9.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 15.8°C and cooler evenings around 6.2°C.