10 All-Time Hottest Weather Temperature Days in Key West, Florida

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The all-time hottest temperature ever recorded in Key West, Florida, dating back to 1872.

These are the ten all-time hottest weather temperature days recorded in the city of Key West, Florida. The temperature data for Key West dates back to 1872. Key West is the hottest weather city in the United States, with an annual average daily temperature of 77.7 degrees.

Despite that fact, the temperature in Key West has never reached 100 degrees once since 1872. The hottest temperature ever recorded in Key West, Florida is 97 degrees, which occurred on both August 26, 1956 and July 19, 1880. Key West is a humid city, which the beach goers, vacationers and snowbirds don't seem to mind at all, as they flock to the Key West area every year, making it one the most popular tourist destinations in the United States.

Going back to 1872, the earliest date in any year that the city of Key West has had a 90 degree day is January 16, when it was exactly 90 degrees. The latest date that Key West has had a 90 degree day was November 18, when it was also 90 degrees. Every date in the months of June through September dating back to 1872, have had at least one 90 degree weather day. In fact, every date from May 8th through October 16th has had at least one year when the temperature reached at least 90 degrees in Key West, Florida.

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10 All-Time Hottest Weather Temperature Days in Key West

T-1. August 26, 1956 - 97 degrees

T-1. July 19, 1880 - 97 degrees

T-2. August 23, 1956 - 96 degrees

T-2. July 19, 1881 - 96 degrees

T-2. July 2, 1881 - 96 degrees

T-2. June 6, 1881 - 96 degrees

T-2. July 25, 1880 - 96 degrees

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T-8. September 3, 2007 - 95 degrees

T-8. August 16, 1957 - 95 degrees

T-8. August 12, 1957 - 95 degrees

It has been 95 degrees in Key West many other times; just the last three occurrences are listed above.

The hottest months of the year in Key West are July and August, which both have an average daily temperature of 84.7 degrees. The next hottest month in Key West is June at 83.5 degrees, followed closely by September at 83.4 degrees. Both May, at 80.5 degrees, and October, at 80.4 degrees, also have daily average temperatures over 80 degrees.

About Key West, Florida

Key West, Florida is an island city and the county seat of Monroe County in Florida and is located at the southern tip of the island chain along U.S. highway 1. It is a main tourist attraction in the United States as many go there to enjoy the tropical climate, great fishing and an island atmosphere.

The weather is not overly hot, but being a tropical island surrounded by water, it is of course quite humid, the highest elevation on the island is just 18 feet above sea level.  Just 106 miles to the north-northwest of Havana, Cuba, Key West serves as a port call for many cruise ships.

One of the main weather factors in Key West is that many hurricanes cross the Keys before they enter the Gulf of Mexico, but Key West has rarely been hit with the eye wall. According to locals, the worst hurricane in Key West was Hurricane Wilma on October 24, 2005 when 60 sixty percent of the homes in Key West were flooded.

On September 10, 2017, Hurricane Irma hit the Keys as a category 4 hurricane. The worst hurricane to hit the Keys was called the Labor Day Hurricane and was the most intense hurricane to make landfall in the United States on record when it slammed into the Keys.


lucia anna
Posted on Aug 12, 2011
Phoenix Montoya
Posted on Aug 8, 2011