Weather
The Florida Keys have a mild climate because of the Gulf Stream in the Straits of Florida. The Gulf of Mexico to the west and north also have tempering effects on our climate.
The average temperature during the winter is only about 14 degrees lower than in the summer. Daily variations throughout the year average only about 10 degrees. There is no known record of frost, ice, sleet, or snow in Key West. December through April is typically full of sunshine and slightly less than 25% of the annual rainfall. June through October is normally 53% of the yearly total in numerous showers and thundershowers.
| Month |
Avg High |
Avg Low |
Rainfall |
Record High |
Record Low |
January |
75° |
65° |
2.22" |
86° |
41° |
February |
76° |
66° |
1.51" |
85° |
45° |
March |
79° |
69° |
1.86" |
88° |
47° |
April |
82° |
72° |
2.06" |
90° |
48° |
May |
85° |
76° |
3.48" |
91° |
64° |
June |
88° |
79° |
4.57" |
94° |
68° |
July |
89° |
80° |
3.27" |
95° |
69° |
August |
90° |
79° |
5.40" |
98° |
68° |
September |
88° |
79° |
5.45" |
94° |
69° |
October |
85° |
76° |
4.34" |
93° |
60° |
November |
81° |
72° |
2.64" |
89° |
49° |
December |
77° |
67° |
2.14" |
88° |
44° |
zip codes
Key West: 33040
Sugarloaf, Cudjoe, Summerland, Ramrod, Little Torch & Big Pine: 33042
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