With a population of around 16,000, Riverdale sits in Georgia, United States. The city operates in the Eastern Time Zone.
In 2025, Riverdale recorded an average annual temperature of 63°F — about 1.1°F below the 30-year normal of 64°F. The hottest day reached 98°F in June; the coldest was 11°F in January. Total precipitation was 45 inches (drier than usual). Snowfall totaled 1 inches, near the 2-inch average. The wettest month was August.
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