New Berlin is a city of approximately 1,400 people in Illinois, United States. Located in the Central Time Zone at 39.7°N latitude.
In 2025, New Berlin recorded an average annual temperature of 55°F — about 0.7°F above the 30-year normal of 54°F. The hottest day reached 96°F in September; the coldest was -6°F in January. Total precipitation was 32 inches (drier than usual). Snowfall totaled 8 inches, below the 22-inch average. The wettest month was July.
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