In June, Oshawa typically sees daytime highs of 22.2°C and overnight lows around 11.9°C. Compared to the annual average high of 11.9°C, June runs +10.3°C.
June in Oshawa averages a daytime high of 22.2°C and an overnight low of 11.9°C.
June runs +10.3°C compared to Oshawa's annual average high of 11.9°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 22.2°C and cooler evenings around 11.9°C.