Port Saint John, in Florida, United States, is home to roughly 12,300 people in the Eastern Time Zone at 28.5°N latitude.
Port Saint John has a humid subtropical climate. Average annual temperature is 73°F, with January lows around 52°F and July highs near 90°F. The city averages 51 inches of precipitation per year. The wettest month is typically September; the driest is February.
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