Key West Average Weather by Day
Data and chart of the the average high and low temperature for every day of the year in
Key West, Florida , based on NOAA data.
Change city
What's the hottest day of the year in Key West?
On average, August 6 is the hottest day of the year Key West, Florida. From 1991–2020, the average high temperature on August 6 was 90.1 °F and the average low was 80.5 °F.
What's the coldest day of the year in Key West?
On average, January 18 is the coldest day of the year Key West, Florida. From 1991–2020, the average high temperature on January 18 was 75.0 °F, and the average low was 64.7 °F.
Average Temperature by Day
Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.
Day
Average (°F)
High
Low
January 1
75.8
66.3
January 2
75.8
66.2
January 3
75.7
66.1
January 4
75.6
66.0
January 5
75.6
65.9
January 6
75.6
65.7
January 7
75.5
65.6
January 8
75.3
65.5
January 9
75.3
65.4
January 10
75.3
65.4
January 11
75.3
65.3
January 12
75.2
65.2
January 13
75.2
65.1
January 14
75.2
65.1
January 15
75.1
65.0
January 16
75.1
64.9
January 17
75.0
64.8
January 18
75.0
64.7
January 19
75.1
64.8
January 20
75.2
64.9
January 21
75.2
64.9
January 22
75.2
64.9
January 23
75.2
65.0
January 24
75.3
65.1
January 25
75.3
65.1
January 26
75.3
65.1
January 27
75.3
65.1
January 28
75.3
65.0
January 29
75.3
65.1
January 30
75.4
65.1
January 31
75.4
65.1
February 1
75.5
65.2
February 2
75.6
65.3
February 3
75.6
65.4
February 4
75.7
65.4
February 5
75.8
65.6
February 6
75.9
65.7
February 7
76.0
65.8
February 8
76.2
65.9
February 9
76.3
66.2
February 10
76.5
66.3
February 11
76.6
66.5
February 12
76.8
66.6
February 13
76.8
66.7
February 14
76.8
66.7
February 15
76.9
66.9
February 16
77.0
67.0
February 17
77.1
67.0
February 18
77.1
67.0
February 19
77.1
67.0
February 20
77.2
67.1
February 21
77.2
67.1
February 22
77.3
67.2
February 23
77.4
67.2
February 24
77.5
67.3
February 25
77.5
67.4
February 26
77.6
67.4
February 27
77.7
67.5
February 28
77.7
67.6
March 1
77.8
67.7
March 2
77.9
67.8
March 3
78.0
67.9
March 4
78.2
68.1
March 5
78.3
68.2
March 6
78.4
68.3
March 7
78.4
68.4
March 8
78.4
68.3
March 9
78.5
68.3
March 10
78.5
68.4
March 11
78.5
68.4
March 12
78.6
68.4
March 13
78.6
68.4
March 14
78.7
68.5
March 15
78.8
68.6
March 16
78.9
68.7
March 17
79.0
68.9
March 18
79.1
69.0
March 19
79.3
69.1
March 20
79.4
69.3
March 21
79.5
69.5
March 22
79.7
69.6
March 23
79.8
69.8
March 24
79.9
70.0
March 25
80.0
70.2
March 26
80.2
70.3
March 27
80.3
70.5
March 28
80.4
70.6
March 29
80.6
70.8
March 30
80.7
70.9
March 31
80.8
71.1
April 1
80.9
71.2
April 2
81.0
71.3
April 3
81.0
71.4
April 4
81.1
71.5
April 5
81.2
71.6
April 6
81.3
71.7
April 7
81.4
71.8
April 8
81.5
71.9
April 9
81.6
72.0
April 10
81.7
72.1
April 11
81.8
72.3
April 12
81.9
72.4
April 13
82.0
72.6
April 14
82.0
72.7
April 15
82.1
72.7
April 16
82.2
72.8
April 17
82.3
72.9
April 18
82.4
73.0
April 19
82.5
73.1
April 20
82.5
73.3
April 21
82.6
73.3
April 22
82.7
73.4
April 23
82.8
73.5
April 24
82.9
73.6
April 25
83.0
73.7
April 26
83.1
73.8
April 27
83.2
74.0
April 28
83.3
74.1
April 29
83.4
74.2
April 30
83.5
74.2
May 1
83.6
74.3
May 2
83.8
74.4
May 3
83.9
74.6
May 4
84.0
74.7
May 5
84.1
74.8
May 6
84.2
74.9
May 7
84.3
75.0
May 8
84.5
75.2
May 9
84.6
75.3
May 10
84.7
75.4
May 11
84.7
75.4
May 12
84.8
75.5
May 13
85.0
75.7
May 14
85.1
75.8
May 15
85.2
75.9
May 16
85.3
76.0
May 17
85.4
76.1
May 18
85.5
76.2
May 19
85.6
76.3
May 20
85.7
76.4
May 21
85.8
76.5
May 22
86.0
76.7
May 23
86.1
76.8
May 24
86.2
76.9
May 25
86.3
77.0
May 26
86.3
77.0
May 27
86.4
77.1
May 28
86.5
77.2
May 29
86.6
77.4
May 30
86.7
77.5
May 31
86.8
77.6
June 1
86.9
77.7
June 2
87.0
77.8
June 3
87.1
77.9
June 4
87.2
78.1
June 5
87.3
78.2
June 6
87.4
78.2
June 7
87.5
78.3
June 8
87.6
78.4
June 9
87.7
78.5
June 10
87.8
78.6
June 11
87.8
78.7
June 12
87.9
78.7
June 13
88.0
78.8
June 14
88.1
78.9
June 15
88.1
79.0
June 16
88.2
79.0
June 17
88.3
79.1
June 18
88.4
79.2
June 19
88.5
79.2
June 20
88.6
79.3
June 21
88.6
79.4
June 22
88.7
79.4
June 23
88.8
79.5
June 24
88.8
79.5
June 25
88.9
79.6
June 26
88.9
79.6
June 27
89.0
79.7
June 28
89.0
79.7
June 29
89.1
79.7
June 30
89.1
79.7
July 1
89.1
79.8
July 2
89.2
79.8
July 3
89.2
79.8
July 4
89.3
79.9
July 5
89.3
79.9
July 6
89.3
80.0
July 7
89.4
80.0
July 8
89.4
80.0
July 9
89.4
80.0
July 10
89.5
80.1
July 11
89.5
80.1
July 12
89.6
80.1
July 13
89.6
80.1
July 14
89.6
80.2
July 15
89.6
80.2
July 16
89.7
80.2
July 17
89.7
80.3
July 18
89.7
80.3
July 19
89.7
80.3
July 20
89.7
80.3
July 21
89.7
80.3
July 22
89.8
80.3
July 23
89.8
80.3
July 24
89.8
80.3
July 25
89.9
80.3
July 26
89.9
80.3
July 27
89.9
80.3
July 28
89.9
80.4
July 29
90.0
80.4
July 30
90.0
80.4
July 31
90.1
80.4
August 1
90.1
80.4
August 2
90.1
80.4
August 3
90.1
80.5
August 4
90.1
80.5
August 5
90.1
80.5
August 6
90.1
80.5
August 7
90.1
80.5
August 8
90.1
80.5
August 9
90.1
80.4
August 10
90.1
80.4
August 11
90.1
80.3
August 12
90.1
80.3
August 13
90.1
80.3
August 14
90.0
80.2
August 15
90.0
80.2
August 16
90.0
80.2
August 17
89.9
80.2
August 18
89.9
80.1
August 19
89.9
80.1
August 20
89.9
80.1
August 21
89.9
80.1
August 22
89.9
80.0
August 23
89.8
80.0
August 24
89.8
79.9
August 25
89.7
79.9
August 26
89.7
79.8
August 27
89.6
79.8
August 28
89.6
79.7
August 29
89.5
79.6
August 30
89.4
79.6
August 31
89.4
79.5
September 1
89.3
79.4
September 2
89.2
79.4
September 3
89.2
79.4
September 4
89.1
79.3
September 5
89.1
79.3
September 6
89.0
79.3
September 7
89.0
79.3
September 8
88.9
79.3
September 9
88.9
79.2
September 10
88.8
79.2
September 11
88.8
79.2
September 12
88.7
79.2
September 13
88.6
79.1
September 14
88.6
79.1
September 15
88.5
79.0
September 16
88.4
79.0
September 17
88.4
78.9
September 18
88.3
78.8
September 19
88.2
78.8
September 20
88.1
78.8
September 21
88.0
78.7
September 22
88.0
78.7
September 23
87.9
78.7
September 24
87.8
78.7
September 25
87.8
78.7
September 26
87.7
78.6
September 27
87.6
78.5
September 28
87.6
78.5
September 29
87.5
78.4
September 30
87.4
78.4
October 1
87.3
78.3
October 2
87.2
78.3
October 3
87.0
78.1
October 4
86.9
78.0
October 5
86.8
77.9
October 6
86.6
77.8
October 7
86.5
77.7
October 8
86.3
77.6
October 9
86.2
77.5
October 10
86.1
77.3
October 11
85.9
77.2
October 12
85.8
77.0
October 13
85.7
77.0
October 14
85.5
76.9
October 15
85.4
76.7
October 16
85.2
76.6
October 17
85.1
76.5
October 18
85.0
76.3
October 19
84.8
76.2
October 20
84.6
76.0
October 21
84.5
75.9
October 22
84.3
75.7
October 23
84.1
75.5
October 24
84.0
75.4
October 25
83.8
75.2
October 26
83.6
75.1
October 27
83.4
74.9
October 28
83.2
74.7
October 29
83.1
74.6
October 30
82.9
74.4
October 31
82.8
74.3
November 1
82.6
74.1
November 2
82.5
74.0
November 3
82.3
73.8
November 4
82.1
73.7
November 5
82.0
73.5
November 6
81.8
73.3
November 7
81.6
73.2
November 8
81.5
73.0
November 9
81.3
72.9
November 10
81.2
72.7
November 11
81.1
72.6
November 12
80.9
72.4
November 13
80.8
72.2
November 14
80.6
72.1
November 15
80.5
71.9
November 16
80.3
71.8
November 17
80.2
71.6
November 18
80.0
71.4
November 19
79.9
71.3
November 20
79.8
71.1
November 21
79.7
71.0
November 22
79.6
70.8
November 23
79.4
70.7
November 24
79.4
70.5
November 25
79.3
70.4
November 26
79.2
70.3
November 27
79.0
70.2
November 28
78.9
70.0
November 29
78.8
69.9
November 30
78.7
69.8
December 1
78.6
69.7
December 2
78.5
69.6
December 3
78.5
69.4
December 4
78.3
69.3
December 5
78.2
69.2
December 6
78.1
69.0
December 7
78.0
68.9
December 8
77.8
68.8
December 9
77.7
68.6
December 10
77.7
68.6
December 11
77.6
68.4
December 12
77.4
68.3
December 13
77.3
68.2
December 14
77.2
68.1
December 15
77.2
68.0
December 16
77.1
67.9
December 17
77.0
67.8
December 18
77.0
67.8
December 19
77.0
67.8
December 20
76.9
67.8
December 21
76.8
67.6
December 22
76.6
67.5
December 23
76.5
67.3
December 24
76.4
67.2
December 25
76.3
67.0
December 26
76.2
66.8
December 27
76.1
66.7
December 28
76.1
66.6
December 29
76.0
66.5
December 30
76.0
66.5
December 31
75.9
66.4
Weather Station Details
Years
Station
Coordinates
1948–2024
Key West International Airport
location