With a population of around 35,200, Chatelet sits in Wallonia, Belgium. The city operates in the Europe/Brussels time zone.
In 2025, Chatelet recorded an average annual temperature of 51°F. The hottest temperatures reached 92°F in July; the coolest were 20°F in January. Total precipitation for the year was 28 inches, with the wettest month being January. Snowfall for the year totaled approximately 4 inches.
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