With a population of around 10,900, Lyss sits in Bern, Switzerland. The city operates in the Europe/Zurich time zone.
In 2025, Lyss recorded an average annual temperature of 50°F. The hottest temperatures reached 92°F in August; the coolest were 20°F in January. Total precipitation for the year was 53 inches, with the wettest month being July. Snowfall for the year totaled approximately 3 inches.
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