Port Saint John, in Florida, United States, is home to roughly 12,300 people in the Eastern Time Zone at 28.5°N latitude.
In 2025, Port Saint John recorded an average annual temperature of 73°F — about 0.5°F below the 30-year normal of 73°F. The hottest day reached 98°F in July; the coldest was 37°F in November. Total precipitation was 55 inches (wetter than usual). The wettest month was August.
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