Key West Weather Records

Key West, Florida weather averages and records from 1948–2023 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Key West, Florida was 96 °F which occurred on July 3, 2023.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Key West, Florida was 41 °F which occurred on January 13, 1981.
Lowest Temperatures: All-Time By Year
Key West Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 75.2 65.0 86 41 1.8
February 76.9 66.8 86 45 1.5
March 79.0 68.8 88 47 1.5
April 82.1 72.7 90 48 2.1
May 85.3 76.0 94 63 3.1
June 88.2 79.0 95 68 4.2
July 89.7 80.3 96 69 3.6
August 90.0 80.2 95 68 5.4
September 88.5 79.0 95 69 7.0
October 85.2 76.6 93 60 5.7
November 80.4 71.9 89 49 2.0
December 77.1 67.9 88 44 2.2
Entire year 83.2 73.7 96 41 40.1
More Key West Weather Records
1948–2023
Highest daily low 88 °F August 9, 2023
Lowest daily high 52 °F January 10, 2010
Greatest daily range
(Difference of high and low)
28 °F February 27, 1989
Difference in high temperature
over two conscutive days
22 °F Jan 23–24, 2003
Most daily precipitation 22.8 inches November 11, 1980
Most monthly precipitation 27.7 inches November 1980
Most yearly precipitation 62.9 inches 1969
Earliest day ≥ 90 °F April 25 1991
Latest day ≥ 90 °F October 28 1960
Most days in a year ≥ 80 °F 312 2019
Most days in a year ≥ 90 °F 102 2023
Key West Weather Streaks
Most consecutive days...
With precipitation 11 days Nov 5–15, 2020
Without precipitation 48 days Dec 25, 1989 – Feb 10, 1990
High temperature ≥ 80 °F 234 days Mar 28 – Nov 16, 2019
High temperature ≥ 90 °F 45 days Jul 21 – Sep 3, 1990
Facts About Key West Weather
Key West Weather by Year
More Key West Weather
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Weather Station Details
Years Station Coordinates
1948–2023 Key West International Airport location