Boniswil is a city of approximately 1,400 people in Aargau, Switzerland. Located in the Europe/Zurich time zone at 47.3°N latitude.
In 2025, Boniswil recorded an average annual temperature of 49°F. The hottest temperatures reached 90°F in July; the coolest were 20°F in December. Total precipitation for the year was 51 inches, with the wettest month being September. Snowfall for the year totaled approximately 5 inches.
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