Gilly, in Wallonia, Belgium, is home to roughly 20,000 people in the Europe/Brussels time zone at 50.4°N latitude.
In 2025, Gilly recorded an average annual temperature of 53°F. The hottest temperatures reached 95°F in July; the coolest were 24°F in December. Total precipitation for the year was 29 inches, with the wettest month being January. Snowfall for the year totaled approximately 3 inches.
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