Plain City is a city of approximately 6,300 people in Utah, United States. Located in the Mountain Time Zone at 41.3°N latitude.
In 2025, Plain City recorded an average annual temperature of 53°F — about 1.7°F above the 30-year normal of 52°F. The hottest day reached 99°F in June; the coldest was 5°F in January. Total precipitation was 19 inches (wetter than usual). The wettest month was February.
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