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Key West May Weather

Averages and records for weather in Key West, Florida in the month of May.

Typical Key West May Weather 1991–2020
Average daily high	85.3 °F
Average daily low	76.0 °F
Average monthly precipitation	3.1 inches
Daily chance of precipitation	24.2%

Key West May Weather Records 1948–2024
Highest temperature	94 °F	May 14, 2019
Lowest temperature	63 °F	May 8, 2016
Highest daily low	83 °F	May 30, 2020
Lowest daily high	74 °F	May 1, 1988
Hottest average high temperature	88.3 °F	1995
Coldest average high temperature	82.7 °F	1970
Most daily precipitation	7.2 inches	May 30, 1960
Most monthly precipitation	14.2 inches	2018

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
May 1	83.6	74.3	88	64
May 2	83.8	74.4	88	65
May 3	83.9	74.6	88	65
May 4	84.0	74.7	89	69
May 5	84.1	74.8	88	64
May 6	84.2	74.9	89	67
May 7	84.3	75.0	88	67
May 8	84.5	75.2	88	63
May 9	84.6	75.3	89	64
May 10	84.7	75.4	89	66
May 11	84.7	75.4	89	68
May 12	84.8	75.5	89	69
May 13	85.0	75.7	90	69
May 14	85.1	75.8	94	67
May 15	85.2	75.9	90	69
May 16	85.3	76.0	90	66
May 17	85.4	76.1	90	67
May 18	85.5	76.2	91	67
May 19	85.6	76.3	91	66
May 20	85.7	76.4	90	67
May 21	85.8	76.5	91	71
May 22	86.0	76.7	92	69
May 23	86.1	76.8	90	70
May 24	86.2	76.9	91	70
May 25	86.3	77.0	91	70
May 26	86.3	77.0	91	68
May 27	86.4	77.1	91	71
May 28	86.5	77.2	91	70
May 29	86.6	77.4	90	71
May 30	86.7	77.5	91	71
May 31	86.8	77.6	91	72

Weather Station Details

Years	Station	Coordinates
1948–2024	Key West International Airport	location