Key West Weather in 2021

2021 Key West Weather Extremes
Highest temperature	93 °F	July 29
Lowest temperature	57 °F	February 4
Highest daily low	84 °F	September 8
Lowest daily high	65 °F	January 10
Most daily precipitation	3.7 inches	July 6
Total annual precipitation	30.4 inches	-

Rank	Temperature	Date
1	93 °F	Jul 29
2	92 °F	Sep 9
2	92 °F	Jul 24
4	91 °F	Sep 26
4	91 °F	Aug 31
4	91 °F	Aug 11
4	91 °F	Aug 10
4	91 °F	Aug 9
4	91 °F	Aug 7
4	91 °F	Jul 28
4	91 °F	Jul 21
4	91 °F	Jul 4
4	91 °F	Jul 3
4	91 °F	Jun 23

Rank	Temperature	Date
1	57 °F	February 4
1	57 °F	January 10
3	58 °F	February 3
4	60 °F	November 28
4	60 °F	February 2
4	60 °F	January 29
4	60 °F	January 9
4	60 °F	January 7
4	60 °F	January 6
10	61 °F	December 24
10	61 °F	February 5
10	61 °F	January 17
10	61 °F	January 11

January 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	79	73	0.01
January 2	79	72	0.00
January 3	78	72	0.00
January 4	74	66	0.00
January 5	70	62	0.00
January 6	70	60	0.00
January 7	75	60	0.02
January 8	74	67	0.01
January 9	70	60	0.00
January 10	65	57	0.00
January 11	75	61	0.00
January 12	72	67	0.00
January 13	72	63	1.30
January 14	68	63	0.03
January 15	73	64	0.03
January 16	72	63	0.00
January 17	68	61	0.00
January 18	73	63	0.03
January 19	74	64	0.00
January 20	73	64	0.00
January 21	74	62	0.00
January 22	78	62	0.00
January 23	78	63	0.00
January 24	77	65	0.00
January 25	77	69	0.00
January 26	78	67	0.00
January 27	79	69	0.00
January 28	74	62	0.00
January 29	70	60	0.00
January 30	75	64	0.00
January 31	77	66	0.08

February 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	75	63	0.05
February 2	67	60	0.00
February 3	69	58	0.00
February 4	69	57	0.00
February 5	75	61	0.00
February 6	77	70	0.00
February 7	78	73	0.00
February 8	81	70	0.00
February 9	81	73	0.00
February 10	81	74	0.00
February 11	81	75	0.00
February 12	81	75	0.00
February 13	82	76	0.00
February 14	82	77	0.00
February 15	83	77	0.00
February 16	82	70	0.05
February 17	82	72	0.00
February 18	83	78	0.00
February 19	83	69	0.00
February 20	73	65	0.00
February 21	79	68	0.00
February 22	80	73	0.39
February 23	81	71	0.18
February 24	84	66	0.00
February 25	82	71	0.00
February 26	82	74	0.00
February 27	83	76	0.02
February 28	83	77	0.00

March 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	82	77	0.00
March 2	83	75	0.00
March 3	83	72	0.00
March 4	75	68	0.00
March 5	78	67	0.00
March 6	80	67	0.01
March 7	75	67	0.04
March 8	75	63	0.00
March 9	77	68	0.00
March 10	80	68	0.00
March 11	81	71	0.00
March 12	81	71	0.00
March 13	81	70	0.00
March 14	81	71	0.00
March 15	81	74	0.00
March 16	83	75	0.00
March 17	82	76	0.00
March 18	82	77	0.00
March 19	81	69	0.00
March 20	76	66	0.00
March 21	75	67	0.00
March 22	77	65	0.00
March 23	75	63	0.00
March 24	83	73	0.00
March 25	84	75	0.00
March 26	84	77	0.00
March 27	84	76	0.00
March 28	83	77	0.00
March 29	83	76	0.00
March 30	85	77	0.00
March 31	85	78	0.00

April 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	86	74	0.00
April 2	77	66	0.00
April 3	78	66	0.00
April 4	80	68	0.00
April 5	80	68	0.00
April 6	80	69	0.00
April 7	81	70	0.00
April 8	82	74	0.00
April 9	83	74	0.00
April 10	85	75	0.00
April 11	87	71	0.02
April 12	84	74	0.07
April 13	84	74	0.00
April 14	84	71	0.00
April 15	82	76	0.00
April 16	83	76	0.00
April 17	86	78	0.00
April 18	85	79	0.00
April 19	85	77	0.09
April 20	81	74	0.89
April 21	85	76	0.00
April 22	85	74	0.00
April 23	84	76	0.00
April 24	85	79	0.03
April 25	86	79	0.00
April 26	87	77	0.00
April 27	84	78	0.00
April 28	83	77	0.00
April 29	85	76	0.01
April 30	86	79	0.00

May 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	86	78	0.00
May 2	85	79	0.00
May 3	86	81	0.00
May 4	86	80	0.00
May 5	86	79	0.00
May 6	86	79	0.00
May 7	86	73	1.13
May 8	83	76	0.00
May 9	86	79	0.00
May 10	85	81	0.00
May 11	86	81	0.00
May 12	86	81	0.00
May 13	90	79	0.00
May 14	88	77	0.00
May 15	88	74	0.43
May 16	86	74	0.25
May 17	84	77	0.00
May 18	85	76	0.00
May 19	83	74	0.23
May 20	82	73	0.85
May 21	82	76	0.00
May 22	83	74	0.00
May 23	83	75	0.00
May 24	84	76	0.00
May 25	84	76	0.00
May 26	84	77	0.00
May 27	84	78	0.00
May 28	84	77	0.00
May 29	85	76	0.01
May 30	86	79	0.00
May 31	86	79	0.19

June 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	85	76	0.16
June 2	85	78	0.00
June 3	86	79	0.00
June 4	87	81	0.00
June 5	87	80	0.07
June 6	88	81	0.00
June 7	88	82	0.00
June 8	87	77	0.09
June 9	86	76	0.42
June 10	86	80	0.01
June 11	86	81	0.00
June 12	87	79	0.00
June 13	87	80	0.00
June 14	87	79	0.03
June 15	88	79	0.00
June 16	88	74	0.62
June 17	84	77	0.00
June 18	88	82	0.00
June 19	88	82	0.00
June 20	88	83	0.00
June 21	88	83	0.00
June 22	88	82	0.00
June 23	91	79	0.00
June 24	86	73	0.43
June 25	85	75	0.07
June 26	86	77	0.21
June 27	87	78	0.12
June 28	85	76	0.10
June 29	86	76	0.24
June 30	85	78	0.01

July 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	85	76	0.00
July 2	89	79	0.00
July 3	91	80	0.00
July 4	91	79	0.00
July 5	87	76	0.82
July 6	83	74	3.67
July 7	88	82	0.00
July 8	88	82	0.00
July 9	89	83	0.00
July 10	89	76	0.16
July 11	85	72	0.61
July 12	86	74	0.12
July 13	87	78	0.04
July 14	87	80	0.01
July 15	87	76	0.38
July 16	87	79	0.11
July 17	88	81	0.00
July 18	88	82	0.00
July 19	88	82	0.00
July 20	89	80	0.00
July 21	91	83	0.00
July 22	88	83	0.00
July 23	90	82	0.00
July 24	92	75	1.23
July 25	87	77	0.26
July 26	88	82	0.02
July 27	89	83	0.00
July 28	91	82	0.22
July 29	93	83	0.00
July 30	89	84	0.00
July 31	89	84	0.00

August 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	89	84	0.00
August 2	89	84	0.00
August 3	89	84	0.00
August 4	89	80	0.07
August 5	90	84	0.00
August 6	90	84	0.00
August 7	91	83	0.00
August 8	89	79	0.43
August 9	91	84	0.01
August 10	91	82	0.02
August 11	91	82	0.01
August 12	90	77	0.38
August 13	88	77	0.32
August 14	86	77	0.41
August 15	87	80	0.00
August 16	88	80	0.01
August 17	89	83	0.00
August 18	89	84	0.00
August 19	88	81	0.00
August 20	88	76	0.59
August 21	89	79	0.02
August 22	89	81	0.00
August 23	89	84	0.00
August 24	89	83	0.00
August 25	90	74	0.88
August 26	88	74	0.14
August 27	86	75	0.57
August 28	88	76	0.28
August 29	88	83	0.00
August 30	88	81	0.00
August 31	91	82	0.00

September 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	82	0.00
September 2	89	82	0.00
September 3	90	78	0.00
September 4	90	78	0.15
September 5	87	78	0.20
September 6	90	78	0.01
September 7	88	79	0.08
September 8	88	84	0.00
September 9	92	83	0.00
September 10	90	82	0.00
September 11	89	80	0.05
September 12	89	77	0.39
September 13	85	76	0.27
September 14	87	76	0.06
September 15	85	76	0.37
September 16	86	76	0.00
September 17	87	78	0.00
September 18	88	80	0.00
September 19	89	78	0.41
September 20	88	77	0.11
September 21	86	80	0.17
September 22	87	78	0.04
September 23	86	78	0.21
September 24	87	81	0.00
September 25	90	81	0.00
September 26	91	81	0.01
September 27	89	80	0.00
September 28	89	80	0.00
September 29	89	79	0.00
September 30	86	79	0.00

October 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	88	80	0.01
October 2	87	78	0.01
October 3	87	79	0.01
October 4	85	77	0.00
October 5	86	79	0.02
October 6	87	81	0.00
October 7	88	82	0.00
October 8	87	82	0.00
October 9	88	78	0.15
October 10	89	78	0.00
October 11	87	76	0.04
October 12	85	76	0.00
October 13	83	74	0.99
October 14	88	78	0.00
October 15	87	77	0.05
October 16	86	76	0.21
October 17	88	76	0.00
October 18	85	77	0.07
October 19	85	77	0.00
October 20	85	76	0.00
October 21	86	78	0.00
October 22	82	76	0.14
October 23	86	75	0.00
October 24	86	75	0.14
October 25	85	80	0.13
October 26	87	79	0.00
October 27	87	80	0.00
October 28	87	79	0.16
October 29	84	75	1.13
October 30	84	76	0.01
October 31	84	76	0.00

November 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	81	74	0.05
November 2	84	70	0.00
November 3	82	74	0.00
November 4	80	73	0.40
November 5	82	76	0.10
November 6	79	72	0.02
November 7	77	70	0.00
November 8	75	67	0.00
November 9	78	68	0.00
November 10	81	70	0.00
November 11	81	73	0.00
November 12	79	71	0.69
November 13	83	73	0.00
November 14	76	71	0.00
November 15	74	66	0.00
November 16	79	69	0.00
November 17	79	72	0.00
November 18	79	69	1.07
November 19	78	72	0.00
November 20	79	72	0.02
November 21	79	73	0.45
November 22	81	73	0.00
November 23	74	65	0.00
November 24	75	64	0.00
November 25	78	68	0.00
November 26	77	68	0.00
November 27	75	65	0.00
November 28	75	60	0.00
November 29	72	62	0.00
November 30	75	65	0.00

December 2021 Key West Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	77	68	0.00
December 2	80	66	0.00
December 3	76	66	0.00
December 4	76	68	0.00
December 5	80	70	0.00
December 6	84	72	0.00
December 7	82	71	0.00
December 8	81	71	0.00
December 9	81	73	0.00
December 10	82	74	0.00
December 11	82	75	0.00
December 12	82	73	0.00
December 13	83	74	0.00
December 14	81	73	0.02
December 15	82	73	0.00
December 16	81	74	0.05
December 17	81	74	0.01
December 18	82	76	0.00
December 19	81	73	0.60
December 20	81	74	0.00
December 21	78	71	0.33
December 22	76	67	0.00
December 23	71	62	0.00
December 24	77	61	0.00
December 25	78	69	0.00
December 26	79	71	0.00
December 27	80	70	0.00
December 28	79	71	0.00
December 29	80	75	0.00
December 30	82	75	0.00
December 31	81	75	0.00