Villigen is a city of approximately 1,400 people in Aargau, Switzerland. Located in the Europe/Zurich time zone at 47.5°N latitude.
In 2025, Villigen recorded an average annual temperature of 51°F. The hottest temperatures reached 95°F in August; the coolest were 19°F in January. Total precipitation for the year was 45 inches, with the wettest month being October. Snowfall for the year totaled approximately 4 inches.
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