With a population of around 11,900, Beauharnois sits in Quebec, Canada. The city operates in the Eastern Time Zone.
In 2025, Beauharnois recorded an average annual temperature of 45°F. The hottest temperatures reached 91°F in June; the coolest were -11°F in February. Total precipitation for the year was 41 inches, with the wettest month being October. Snowfall for the year totaled approximately 26 inches.
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