Cossonay, in Vaud, Switzerland, is home to roughly 2,800 people in the Europe/Zurich time zone at 46.6°N latitude.
In 2025, Cossonay recorded an average annual temperature of 50°F. The hottest temperatures reached 94°F in August; the coolest were 18°F in November. Total precipitation for the year was 52 inches, with the wettest month being September. Snowfall for the year totaled approximately 3 inches.
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