Oshawa, in Ontario, Canada, is home to roughly 175,000 people in the Eastern Time Zone at 43.9°N latitude.
In 2025, Oshawa recorded an average annual temperature of 47°F. The hottest temperatures reached 87°F in June; the coolest were -4°F in March. Total precipitation for the year was 34 inches, with the wettest month being December. Snowfall for the year totaled approximately 21 inches.
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