Brittnau, in Aargau, Switzerland, is home to roughly 3,700 people in the Europe/Zurich time zone at 47.3°N latitude.
In 2025, Brittnau recorded an average annual temperature of 50°F. The hottest temperatures reached 92°F in August; the coolest were 19°F in November. Total precipitation for the year was 50 inches, with the wettest month being September. Snowfall for the year totaled approximately 3 inches.
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