With a population of around 3,800, Osterwieck sits in Saxony-Anhalt, Germany. The city operates in the Central European time zone.
In 2025, Osterwieck recorded an average annual temperature of 50°F. The hottest temperatures reached 95°F in August; the coolest were 9°F in February. Total precipitation for the year was 20 inches, with the wettest month being January. Snowfall for the year totaled approximately 5 inches.
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