Highest Daily Low Temperatures in Key West History

This is a list of the hottest daily low temperatures ever recorded in Key West, Florida history from 1948–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Key West

The highest low temperature for a calendar day in Key West, Florida history was 88 °F which happened on Wednesday, August 9, 2023.

Rank	Temperature	Date
1	88 °F	August 9, 2023
2	87 °F	August 14, 2023
2	87 °F	August 10, 2023
2	87 °F	August 8, 2023
2	87 °F	August 7, 2023
2	87 °F	July 18, 2023
2	87 °F	July 12, 2023
2	87 °F	August 4, 2007
2	87 °F	July 26, 2007
10	86 °F	August 1, 2023
10	86 °F	July 24, 2023
10	86 °F	July 22, 2023
10	86 °F	July 20, 2023
10	86 °F	July 15, 2023
10	86 °F	July 11, 2023
10	86 °F	July 10, 2023
10	86 °F	September 4, 2020
10	86 °F	September 3, 2020
10	86 °F	September 2, 2020
10	86 °F	August 16, 2020
10	86 °F	August 14, 2020
10	86 °F	August 10, 2020
10	86 °F	July 5, 2020
10	86 °F	June 26, 2020
10	86 °F	July 26, 2018
10	86 °F	July 25, 2018
10	86 °F	August 17, 2014
10	86 °F	August 14, 2014
10	86 °F	July 30, 2009
10	86 °F	July 29, 2009
10	86 °F	August 27, 2007
10	86 °F	August 11, 2007
10	86 °F	July 25, 2007
10	86 °F	July 13, 2007
10	86 °F	August 4, 1993
10	86 °F	June 11, 1985