Southglenn, in Colorado, United States, is home to roughly 42,300 people in the Mountain Time Zone at 39.6°N latitude.
In 2025, Southglenn recorded an average annual temperature of 52°F — about 1.7°F above the 30-year normal of 50°F. The hottest day reached 100°F in July; the coldest was -13°F in January. Total precipitation was 17 inches (wetter than usual). The wettest month was May.
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