Weather By Day

August Weather In Key West  
August Key West Weather
Record High: 98°F
Normal High: 90°F
Normal Low: 79°F
Record Low: 68°F
Avg Monthly Rain: 5.4"
Rec 1 Day Rain: 9.66"

Key West Weather In August

The highest recorded temperature for Key West for the past 58 years in August was 98 degrees Fahrenheit, on August 12, 1997, while the typical high temperature is 90. The lowest measured temperature in Key West for the last 58 years in August was 68 registered on August 16, 1952, while the standard low daily temperature for the month is 79.

United States National Weather Service historical Key West August Weather data shows that on August 31, 1977, the high temperature did not exceed 81 degrees Fahrenheit, the lowest high measured in Key West in the past 58 years. Weather Service records additionally show that on August 22, 2007, the recorded low temperature for the day did not drop below 87 degrees, the highest low measured in Key West in the last 58 years.

NWS data indicates that the daily high temperature in Key West on August First averages 89 degrees Fahrenheit and the high on the last day of August averages 89 degrees. The daily low temperature in Key West on August First averages 80 degrees Fahrenheit and the low on the last day of August averages 79 degrees.

Key West usually receives an average of 5.4 inches of rain during the month. August Key West Weather records show that on August 26, 2005 Key West received 9.66 inches of rain, the most rain measured in a single day in August.