San Juan Weather in 1991

Historical record of San Juan, Puerto Rico weather for the year 1991 based on NOAA data.

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1991 San Juan Weather Extremes
Highest temperature	94 °F	August 29
Lowest temperature	65 °F	January 21
Highest daily low	82 °F	August 9
Lowest daily high	79 °F	December 16
Most daily precipitation	2.1 inches	September 7
Most daily snow	none	-
Total annual precipitation	35.5 inches	-
Total annual snow	none	-

What was the hottest temperature in San Juan in 1991?

The highest temperature recorded in San Juan, Puerto Rico in 1991 was 94 °F which happened 3 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Juan in 1991

Rank	Temperature	Date
1	94 °F	Aug 29
1	94 °F	Aug 18
1	94 °F	Aug 15
4	93 °F	Oct 10
4	93 °F	Sep 5
4	93 °F	Sep 4
4	93 °F	Sep 3
4	93 °F	Sep 2
4	93 °F	Aug 28
4	93 °F	Aug 19
4	93 °F	Jul 13
4	93 °F	Jun 12
4	93 °F	Jun 5

What was the coldest temperature in San Juan in 1991?

The lowest temperature recorded in San Juan, Puerto Rico in 1991 was 65 °F which happened on Jan 21.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Juan in 1991

Rank	Temperature	Date
1	65 °F	January 21
2	66 °F	December 24
2	66 °F	February 7
2	66 °F	January 22
5	67 °F	December 23
5	67 °F	February 6
5	67 °F	January 20
8	68 °F	December 25
8	68 °F	December 22
8	68 °F	February 19
8	68 °F	February 18
8	68 °F	February 9
8	68 °F	January 27

January 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	81	73	0.19
January 2	83	70	0.21
January 3	83	71	0.14
January 4	83	70	0.00
January 5	83	72	0.32
January 6	83	71	0.18
January 7	82	71	0.21
January 8	85	71	0.23
January 9	83	73	0.20
January 10	82	70	0.07
January 11	82	72	0.06
January 12	83	72	0.09
January 13	85	70	0.00
January 14	84	73	0.00
January 15	83	72	0.02
January 16	83	72	0.08
January 17	85	70	0.17
January 18	84	70	0.00
January 19	83	71	0.00
January 20	84	67	0.00
January 21	83	65	0.00
January 22	83	66	0.00
January 23	84	69	0.03
January 24	84	72	0.04
January 25	84	69	0.03
January 26	83	70	0.11
January 27	84	68	0.02
January 28	86	71	0.00
January 29	85	71	0.00
January 30	86	71	0.00
January 31	80	72	0.17

February 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	83	71	0.08
February 2	82	72	0.02
February 3	83	69	0.02
February 4	84	70	0.00
February 5	84	70	0.07
February 6	83	67	0.00
February 7	83	66	0.00
February 8	85	69	0.00
February 9	90	68	0.00
February 10	88	72	0.12
February 11	84	73	0.03
February 12	85	71	0.03
February 13	82	72	0.00
February 14	89	70	0.00
February 15	88	73	0.00
February 16	90	71	0.00
February 17	85	71	0.02
February 18	84	68	0.65
February 19	79	68	0.54
February 20	83	70	0.48
February 21	83	73	0.12
February 22	86	71	0.02
February 23	85	70	0.01
February 24	87	73	0.00
February 25	85	72	0.04
February 26	88	69	0.00
February 27	87	72	0.00
February 28	85	73	0.01

March 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	86	71	0.15
March 2	86	71	0.08
March 3	85	71	0.17
March 4	87	72	0.02
March 5	87	72	0.03
March 6	88	72	0.00
March 7	86	70	0.00
March 8	88	72	0.04
March 9	86	69	0.00
March 10	89	70	0.00
March 11	83	69	0.07
March 12	82	75	0.00
March 13	81	72	0.01
March 14	90	73	0.01
March 15	90	74	0.00
March 16	86	70	0.00
March 17	85	72	0.04
March 18	83	73	0.16
March 19	90	72	0.00
March 20	89	73	0.00
March 21	84	74	0.00
March 22	79	73	0.49
March 23	83	73	0.03
March 24	83	74	0.05
March 25	86	72	0.49
March 26	84	71	0.00
March 27	84	73	0.01
March 28	82	73	0.00
March 29	83	70	0.12
March 30	84	69	0.00
March 31	84	71	0.02

April 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	84	72	0.01
April 2	84	71	0.14
April 3	84	70	0.39
April 4	83	70	0.00
April 5	84	72	0.00
April 6	84	73	0.00
April 7	83	74	0.13
April 8	82	72	0.08
April 9	84	72	0.00
April 10	84	73	0.00
April 11	84	71	0.06
April 12	82	70	0.18
April 13	84	74	0.01
April 14	85	75	0.00
April 15	82	71	0.51
April 16	83	71	0.00
April 17	85	72	0.00
April 18	86	72	0.12
April 19	85	71	0.00
April 20	91	72	0.00
April 21	90	74	0.02
April 22	89	76	0.00
April 23	89	76	0.00
April 24	87	75	0.07
April 25	85	75	0.04
April 26	89	73	0.00
April 27	89	73	0.00
April 28	90	74	0.00
April 29	88	74	0.00
April 30	87	75	0.00

May 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	87	75	0.00
May 2	87	74	0.00
May 3	85	73	1.27
May 4	86	74	0.17
May 5	89	73	0.14
May 6	86	76	0.00
May 7	87	75	0.00
May 8	85	73	0.68
May 9	86	74	0.02
May 10	86	73	0.00
May 11	86	74	0.01
May 12	84	73	0.52
May 13	86	75	0.06
May 14	87	75	0.01
May 15	89	77	0.00
May 16	88	77	0.00
May 17	87	76	0.05
May 18	87	74	0.02
May 19	86	73	0.00
May 20	87	75	0.06
May 21	92	74	0.06
May 22	91	76	0.00
May 23	91	77	0.00
May 24	89	77	0.00
May 25	83	75	0.16
May 26	87	77	0.00
May 27	87	76	0.00
May 28	87	77	0.00
May 29	87	75	0.00
May 30	87	74	0.00
May 31	89	76	0.00

June 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	91	77	0.81
June 2	92	76	0.00
June 3	92	76	0.00
June 4	88	76	0.07
June 5	93	76	0.00
June 6	87	75	0.06
June 7	91	75	0.00
June 8	89	76	0.24
June 9	92	76	0.00
June 10	90	76	0.00
June 11	91	77	0.13
June 12	93	78	0.00
June 13	92	79	0.00
June 14	90	77	0.00
June 15	89	77	0.00
June 16	89	78	0.00
June 17	89	77	0.00
June 18	89	75	0.08
June 19	89	76	0.00
June 20	88	76	0.00
June 21	88	75	0.21
June 22	89	75	0.00
June 23	88	73	0.19
June 24	91	79	0.01
June 25	89	79	0.00
June 26	89	79	0.00
June 27	91	78	0.02
June 28	90	77	0.00
June 29	88	77	0.14
June 30	87	75	0.81

July 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	89	75	0.00
July 2	91	77	0.00
July 3	88	77	0.00
July 4	91	77	0.18
July 5	88	78	0.00
July 6	89	78	0.00
July 7	88	77	0.00
July 8	89	76	0.00
July 9	91	76	0.00
July 10	90	77	0.00
July 11	89	80	0.00
July 12	89	80	0.00
July 13	93	77	0.00
July 14	89	78	0.00
July 15	89	75	0.48
July 16	83	76	1.56
July 17	88	77	0.00
July 18	87	77	0.00
July 19	91	76	0.04
July 20	89	79	0.00
July 21	88	78	0.00
July 22	88	77	0.10
July 23	90	77	0.00
July 24	92	79	0.01
July 25	90	78	0.00
July 26	89	79	0.04
July 27	89	77	0.47
July 28	86	77	0.19
July 29	88	77	0.00
July 30	88	78	0.21
July 31	88	77	0.02

August 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	89	76	0.25
August 2	89	77	0.00
August 3	91	78	0.01
August 4	89	79	0.00
August 5	90	77	0.00
August 6	92	78	0.13
August 7	89	79	0.00
August 8	90	81	0.00
August 9	90	82	0.00
August 10	90	80	0.00
August 11	89	79	0.00
August 12	89	81	0.00
August 13	89	80	0.00
August 14	90	78	0.00
August 15	94	78	0.00
August 16	91	78	0.00
August 17	89	78	0.04
August 18	94	76	0.02
August 19	93	77	0.00
August 20	88	76	0.30
August 21	89	76	0.00
August 22	87	75	0.07
August 23	90	75	0.03
August 24	90	77	0.00
August 25	89	79	0.02
August 26	90	77	0.00
August 27	86	76	0.96
August 28	93	76	0.11
August 29	94	76	0.00
August 30	91	77	0.00
August 31	90	78	0.00

September 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	89	78	0.00
September 2	93	80	0.00
September 3	93	79	0.00
September 4	93	78	0.00
September 5	93	77	0.00
September 6	91	79	0.01
September 7	92	75	2.13
September 8	87	74	0.15
September 9	88	78	0.11
September 10	89	78	0.01
September 11	91	78	0.00
September 12	90	80	0.00
September 13	91	78	0.00
September 14	92	77	0.00
September 15	90	78	0.00
September 16	88	76	0.30
September 17	88	76	0.16
September 18	91	78	0.00
September 19	88	77	0.04
September 20	89	76	0.48
September 21	88	77	0.13
September 22	89	76	0.42
September 23	88	77	0.02
September 24	88	78	0.04
September 25	88	76	0.09
September 26	91	76	0.00
September 27	89	75	0.27
September 28	90	76	0.01
September 29	83	74	0.30
September 30	88	75	0.33

October 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	87	76	0.03
October 2	89	75	0.10
October 3	88	77	0.06
October 4	88	77	0.08
October 5	87	77	0.06
October 6	87	76	0.00
October 7	88	73	0.00
October 8	88	76	0.00
October 9	92	76	0.00
October 10	93	76	0.00
October 11	92	76	0.00
October 12	91	78	0.71
October 13	88	77	0.00
October 14	88	77	0.13
October 15	88	76	0.04
October 16	90	77	0.00
October 17	91	77	0.00
October 18	88	76	0.00
October 19	87	75	0.08
October 20	87	74	0.00
October 21	88	75	0.02
October 22	88	77	0.00
October 23	90	76	0.00
October 24	91	76	0.00
October 25	90	76	0.19
October 26	88	76	0.00
October 27	91	76	0.00
October 28	86	76	0.00
October 29	85	76	0.00
October 30	90	75	0.12
October 31	88	73	0.22

November 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	86	75	0.25
November 2	87	74	0.26
November 3	86	76	0.57
November 4	87	75	0.21
November 5	86	74	0.13
November 6	86	74	0.38
November 7	85	75	0.04
November 8	88	72	0.49
November 9	85	74	0.04
November 10	88	75	0.00
November 11	85	74	0.03
November 12	86	73	0.02
November 13	86	74	0.19
November 14	85	73	0.05
November 15	85	74	0.00
November 16	86	74	0.11
November 17	85	72	0.00
November 18	86	73	0.00
November 19	86	74	0.00
November 20	86	74	0.08
November 21	85	72	1.78
November 22	86	73	0.48
November 23	85	74	0.35
November 24	84	74	0.31
November 25	85	73	0.00
November 26	86	74	0.05
November 27	87	75	0.00
November 28	87	76	0.01
November 29	86	75	0.02
November 30	84	75	0.31

December 1991 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	85	74	0.06
December 2	84	74	0.32
December 3	82	71	0.50
December 4	83	72	0.02
December 5	84	73	0.14
December 6	84	73	0.09
December 7	85	75	0.01
December 8	84	73	0.53
December 9	82	73	0.05
December 10	84	71	0.02
December 11	84	71	0.00
December 12	82	73	0.00
December 13	83	72	0.10
December 14	83	73	0.00
December 15	83	69	0.05
December 16	79	71	0.07
December 17	81	72	0.02
December 18	83	70	0.05
December 19	83	71	0.00
December 20	83	73	0.22
December 21	80	71	0.04
December 22	80	68	0.21
December 23	80	67	0.00
December 24	84	66	0.00
December 25	81	68	0.00
December 26	82	69	0.05
December 27	82	70	0.12
December 28	82	70	0.04
December 29	82	71	0.00
December 30	85	70	0.00
December 31	85	72	0.00

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Weather Station Details

Years	Station	Coordinates
1956–2024	San Juan Airport	location