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.
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
1948–2023 Key West International Airport location