FORT JEFFERSON, FLORIDA

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The average temperature for the year in Fort Jefferson is 77.4°F (25.2°C). The warmest month, on average, is July with an average temperature of 84.7°F (29.3°C). The coolest month on average is January, with an average temperature of 68.7°F (20.4°C).

The average amount of precipitation for the year in Fort Jefferson is 36.4" (924.6 mm). The month with the most precipitation on average is September with 6.6" (167.6 mm) of precipitation. The month with the least precipitation on average is May with an average of 1.6" (40.6 mm). There are an average of 87.1 days of precipitation, with the most precipitation occurring in September with 12.6 days and the least precipitation occurring in April with 3.7 days.