Islamorada Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is at Islamorada, in the Florida Keys during each month of the year.
The average high and low temperatures are listed below monthly and annually for Upper Matecumbe Key and its neighbors, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 70, 80 or 90 °F each month at Islamorada, scroll down farther. There are also monthly and yearly counts of days with cool weather.
The first set of high and low temperatures are averages for 2007 to 2016. Everything else here is based on 1991 to 2020 weather.
High °F | Low °F | High °C | Low °C | |
---|---|---|---|---|
75 | 65 | January | 24 | 18 |
76 | 66 | February | 24 | 19 |
78 | 69 | March | 25 | 20 |
81 | 73 | April | 27 | 23 |
84 | 77 | May | 29 | 25 |
86 | 79 | June | 30 | 26 |
88 | 80 | July | 31 | 27 |
89 | 80 | August | 32 | 27 |
87 | 79 | September | 31 | 26 |
85 | 77 | October | 29 | 25 |
79 | 70 | November | 26 | 21 |
78 | 69 | December | 25 | 21 |
82 | 73 | Year | 28 | 23 |
High °F | Low °F | High °C | Low °C | |
---|---|---|---|---|
75 | 65 | January | 24 | 18 |
77 | 67 | February | 25 | 19 |
78 | 69 | March | 26 | 21 |
81 | 72 | April | 27 | 22 |
84 | 76 | May | 29 | 25 |
87 | 78 | June | 30 | 26 |
89 | 80 | July | 32 | 26 |
89 | 79 | August | 32 | 26 |
88 | 79 | September | 31 | 26 |
85 | 76 | October | 30 | 25 |
80 | 71 | November | 27 | 22 |
78 | 68 | December | 25 | 20 |
83 | 73 | Year | 28 | 23 |
Days of Hot Weather in Islamorada
Islamorada enjoys pleasantly hot temperatures throughout much of the year. Most days have highs in the 80s Fahrenheit. Thermometers typically reach into the 90s for 30 days annually, scattered from May to November. It normally doesn't get any hotter than 100 °F (38 °C) at this cluster of six islands in the midst of the Florida Keys.
70 °F 21 °C |
80 °F 27 °C |
90 °F 32 °C | |
---|---|---|---|
January | 27 | 6 | 0 |
February | 26 | 8 | 0 |
March | 30 | 14 | 0 |
April | 30 | 23 | 0 |
May | 31 | 30 | 0 |
June | 30 | 30 | 3 |
July | 31 | 31 | 8 |
August | 31 | 31 | 12 |
September | 30 | 30 | 5 |
October | 31 | 30 | 2 |
November | 30 | 18 | 0 |
December | 30 | 12 | 0 |
Year | 357 | 261 | 30 |
How Often Islamorada Has Cool Temperatures
Cold temperatures simply don't happen at Islamorada. Even winter nights enjoy warm weather, with just five on average seeing lows of 50 °F or less. Only once every few years does the thermometer touch 40 °F (4 °C).
50 °F 10 °C |
60 °F 16 °C | |
---|---|---|
January | 3 | 11 |
February | 1 | 6 |
March | 0 | 4 |
April | 0 | 1 |
May | 0 | 0 |
June | 0 | 0 |
July | 0 | 0 |
August | 0 | 0 |
September | 0 | 0 |
October | 0 | 0 |
November | 0 | 2 |
December | 1 | 6 |
Year | 5 | 29 |
References
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.
NOAA National Centers for Environmental Information (NCEI). Climate Normals.