About Seon, Aargau's Climate & Weather History

Seon, in Aargau, Switzerland, is home to roughly 4,400 people in the Europe/Zurich time zone at 47.3°N latitude.

In 2025, Seon recorded an average annual temperature of 50°F. The hottest temperatures reached 92°F in July; the coolest were 20°F in December. Total precipitation for the year was 49 inches, with the wettest month being September. Snowfall for the year totaled approximately 4 inches.