Key West Weather In December
The hottest December day in Key West for the past 58 years was 88 degrees Fahrenheit, most recently measured on December 9, 1948, and the mean high is 77. The coldest day reported in Key West in December for the past 58 years was 44 most recently registered on December 6, 1989, and the mean daily low in the month is 67.
According to National Weather Service Key West December Weather data, on December 25, 1989, the recorded high temperature did not exceed 53 degrees Fahrenheit, the lowest high measured in Key West in the past 58 years. NWS weather data additionally shows that on December 28, 2007, the lowest recorded temperature on that day did not drop below 78 degrees, the highest low measured in Key West in the last 58 years.
Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in Key West on December First is 77 degrees Fahrenheit and the average high on the last day of December is 76 degrees. The average recorded low temperature in Key West on December First is 68 degrees Fahrenheit and the average low on the last day of December is 67 degrees.
Key West usually receives an average of 2.14 inches of precipitation during December. The most rain recorded in a single day, as shown by December Key West Weather data, was 6.66 inches on December 24, 1986.