With a population of around 3,200, Carlyle sits in Illinois, United States. The city operates in the Central Time Zone.
In 2025, Carlyle recorded an average annual temperature of 56°F — about 1.4°F below the 30-year normal of 58°F. The hottest day reached 93°F in July; the coldest was -1°F in January. Total precipitation was 38 inches (drier than usual). Snowfall totaled 7 inches, below the 11-inch average. The wettest month was April.
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