UNIVERSITY OF MIAMI

Heat Index and Dewpoint Climatology for Key West, FL

· The data shown on this page are from the automated METAR reports from Key West International Airport in Monroe County, Florida (KEYW). These data span 1948-present and the station has been at the same location during this time: the east end of the airport grounds at an elevation of 1 foot above sea level.

· The reported air and dew point temperature values are used to calculate the relative humidity and in turn, the heat index. The heat index is only calculated when the air temperature is above 80°F.

· The averages are calculated using the 1991-2020 period, and the records span the 1948-present period. None of the values shown here represent official climate normals or records, and while some quality control was performed on the data, errors could still exist.

· Average summertime diurnal cycle of HI, T, and Td from 2011-2020 as well as from 1951-1960

· Annual time series of heat index values surpassing certain thresholds

· Daily heatmap of hours spent above 90°F heat index

Heat Index Threshold Consecutive Days (1st) Ending Date Consecutive Days (2nd) Ending Date Consecutive Days (3rd) Ending Date
100 44 20200905 30 20160823 28 20200717
101 23 20160816 20 20200825 18 19810617
102 12 19950823 11 20160712 10 20160909
103 11 20160712 10 19950905 9 20200825
104 10 19950905 9 20150706 9 19810814
105 8 19950903 6 19810711 4 20200711
106 8 19950903 6 19810711 4 20150701
107 4 19810824 3 19950831 3 19810814
108 2 20150630 2 20000728 2 19810823
109 2 19810823 1 20200710 1 20170908
110 1 20200710 1 20150824 1 20020817
This table shows the record number of consecutive days that the heat index was at or above a given threshold, as well as the date that the streak ended. For historical context, the second and third highest number of consecutive days is also provided. If there is a tie, the most recent date will be listed first, next most recent date will be listed second, etc.


[JUMP TO MONTHLY HEAT INDEX DATA]
[JUMP TO DAILY DEWPOINT DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]



[JUMP TO DAILY HEAT INDEX DATA]
[JUMP TO DAILY DEWPOINT DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]



[JUMP TO DAILY HEAT INDEX DATA]
[JUMP TO MONTHLY HEAT INDEX DATA]
[JUMP TO MONTHLY DEWPOINT DATA]
[JUMP TO DAILY TEMPERATURE DATA]
[JUMP TO MONTHLY TEMPERATURE DATA]