With a population of around 1,300, Germantown sits in Illinois, United States. The city operates in the Central Time Zone.
In 2025, Germantown recorded an average annual temperature of 56°F — about 1.6°F below the 30-year normal of 58°F. The hottest day reached 94°F in September; the coldest was 0°F in January. Total precipitation was 39 inches (drier than usual). Snowfall totaled 6 inches, below the 11-inch average. The wettest month was April.
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