Arlington Heights, in Pennsylvania, United States, is home to roughly 6,300 people in the Eastern Time Zone at 41°N latitude.
In 2025, Arlington Heights recorded an average annual temperature of 50°F — about 4.6°F above the 30-year normal of 46°F. The hottest day reached 95°F in June; the coldest was -4°F in January. Total precipitation was 40 inches (drier than usual). The wettest month was May.
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