San Juan Weather in 1999

Historical record of San Juan, Puerto Rico weather for the year 1999 based on NOAA data.

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1999 San Juan Weather Extremes
Highest temperature	94 °F	September 22
Lowest temperature	64 °F	February 7
Highest daily low	79 °F	September 22
Lowest daily high	77 °F	February 1
Most daily precipitation	2.5 inches	December 2
Most daily snow	none	-
Total annual precipitation	61.1 inches	-
Total annual snow	none	-

What was the hottest temperature in San Juan in 1999?

The highest temperature recorded in San Juan, Puerto Rico in 1999 was 94 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Juan in 1999

Rank	Temperature	Date
1	94 °F	Sep 22
1	94 °F	Sep 21
3	93 °F	Sep 12
3	93 °F	Aug 18
3	93 °F	Jun 6
3	93 °F	Apr 29
7	92 °F	May 25
7	92 °F	May 20
7	92 °F	May 16
7	92 °F	May 15
7	92 °F	May 3
7	92 °F	May 2
7	92 °F	May 1
7	92 °F	Apr 30

What was the coldest temperature in San Juan in 1999?

The lowest temperature recorded in San Juan, Puerto Rico in 1999 was 64 °F which happened on Feb 7.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Juan in 1999

Rank	Temperature	Date
1	64 °F	February 7
2	66 °F	February 20
3	67 °F	February 11
3	67 °F	February 8
3	67 °F	February 5
3	67 °F	January 31
7	68 °F	February 21
7	68 °F	February 19
7	68 °F	February 14
7	68 °F	February 6
7	68 °F	February 3
7	68 °F	January 7

January 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	84	72	0.03
January 2	81	73	0.08
January 3	83	73	0.12
January 4	82	73	0.26
January 5	82	74	0.14
January 6	83	73	0.15
January 7	82	68	0.00
January 8	82	73	0.10
January 9	83	74	0.01
January 10	82	72	0.37
January 11	82	70	0.04
January 12	86	70	0.00
January 13	84	71	0.37
January 14	82	71	0.46
January 15	82	71	0.08
January 16	83	71	0.05
January 17	82	70	0.00
January 18	83	71	0.11
January 19	83	71	0.03
January 20	83	72	0.02
January 21	83	70	0.00
January 22	83	72	0.00
January 23	82	71	0.21
January 24	82	71	0.04
January 25	82	70	0.04
January 26	82	72	0.00
January 27	81	72	0.10
January 28	80	69	0.41
January 29	81	72	0.00
January 30	82	72	0.00
January 31	81	67	0.02

February 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	77	69	0.18
February 2	79	69	0.00
February 3	80	68	0.01
February 4	80	69	0.09
February 5	81	67	0.00
February 6	82	68	0.01
February 7	81	64	0.00
February 8	82	67	0.00
February 9	83	69	0.00
February 10	83	70	0.02
February 11	83	67	0.08
February 12	81	70	0.73
February 13	81	69	0.12
February 14	85	68	0.00
February 15	82	70	0.03
February 16	79	72	0.00
February 17	80	71	0.00
February 18	80	69	0.00
February 19	82	68	0.00
February 20	83	66	0.00
February 21	82	68	0.00
February 22	84	69	0.00
February 23	85	71	0.00
February 24	84	73	0.00
February 25	81	70	1.47
February 26	84	69	0.00
February 27	83	69	0.00
February 28	84	70	0.00

March 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	85	70	0.11
March 2	83	69	0.00
March 3	84	70	0.00
March 4	85	70	0.00
March 5	84	70	0.00
March 6	83	72	0.00
March 7	84	71	0.00
March 8	83	69	0.00
March 9	79	71	0.00
March 10	80	69	0.33
March 11	85	70	0.00
March 12	86	69	0.00
March 13	83	71	0.00
March 14	83	70	0.00
March 15	88	71	0.00
March 16	87	70	0.00
March 17	83	71	0.00
March 18	85	72	0.00
March 19	85	71	0.00
March 20	86	71	0.00
March 21	85	72	0.00
March 22	85	72	0.00
March 23	83	71	0.00
March 24	82	73	0.00
March 25	85	72	0.25
March 26	84	73	0.06
March 27	86	72	0.00
March 28	87	72	0.00
March 29	85	72	0.00
March 30	85	73	0.00
March 31	84	74	0.00

April 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	85	74	0.02
April 2	84	73	0.96
April 3	83	70	0.00
April 4	82	72	0.22
April 5	82	73	0.01
April 6	82	72	0.00
April 7	83	70	0.18
April 8	83	71	0.60
April 9	84	74	0.00
April 10	86	70	0.00
April 11	84	71	0.00
April 12	84	74	0.00
April 13	84	73	0.00
April 14	87	74	0.00
April 15	88	74	0.00
April 16	90	73	0.00
April 17	87	74	0.01
April 18	87	73	0.20
April 19	87	75	0.15
April 20	89	74	0.00
April 21	88	74	0.00
April 22	88	74	0.00
April 23	85	73	0.14
April 24	85	74	0.00
April 25	86	72	0.00
April 26	86	73	0.02
April 27	88	72	0.02
April 28	89	74	0.00
April 29	93	74	0.00
April 30	92	75	0.00

May 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	92	75	0.00
May 2	92	76	0.00
May 3	92	76	0.00
May 4	90	75	0.00
May 5	89	76	0.37
May 6	87	73	1.04
May 7	91	74	0.00
May 8	86	71	1.47
May 9	84	73	0.00
May 10	85	74	0.00
May 11	83	74	0.42
May 12	84	74	0.00
May 13	91	76	0.00
May 14	91	76	0.00
May 15	92	76	0.00
May 16	92	77	0.00
May 17	88	76	0.14
May 18	88	77	0.00
May 19	89	77	0.00
May 20	92	78	0.03
May 21	89	77	0.11
May 22	88	76	0.04
May 23	90	77	0.00
May 24	88	77	0.14
May 25	92	76	0.02
May 26	89	77	0.00
May 27	88	78	0.00
May 28	89	78	0.03
May 29	89	78	0.00
May 30	88	78	0.00
May 31	88	75	0.18

June 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	88	73	0.68
June 2	89	75	0.00
June 3	88	76	0.16
June 4	87	75	0.81
June 5	91	77	0.03
June 6	93	77	0.00
June 7	87	75	0.55
June 8	87	75	0.35
June 9	87	75	0.03
June 10	88	75	0.00
June 11	89	76	0.00
June 12	88	76	0.17
June 13	89	75	0.14
June 14	88	78	0.00
June 15	88	78	0.00
June 16	87	75	0.27
June 17	84	73	0.42
June 18	88	76	0.35
June 19	86	74	1.29
June 20	84	76	0.05
June 21	87	78	0.00
June 22	88	78	0.01
June 23	89	77	0.03
June 24	89	78	0.00
June 25	88	78	0.00
June 26	87	79	0.00
June 27	87	79	0.06
June 28	87	79	0.11
June 29	87	78	0.02
June 30	88	76	0.00

July 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	86	73	0.52
July 2	87	75	0.75
July 3	87	79	0.00
July 4	86	77	0.02
July 5	84	75	0.13
July 6	91	74	0.00
July 7	88	77	0.08
July 8	87	74	0.20
July 9	85	75	0.08
July 10	86	77	0.00
July 11	85	75	0.06
July 12	88	74	0.27
July 13	81	74	0.24
July 14	81	71	0.80
July 15	86	73	0.34
July 16	87	75	0.35
July 17	85	76	0.42
July 18	88	79	0.01
July 19	87	78	0.05
July 20	87	77	0.09
July 21	89	76	0.03
July 22	88	78	0.21
July 23	88	77	0.37
July 24	87	78	0.01
July 25	89	75	0.04
July 26	91	76	0.03
July 27	90	78	0.00
July 28	89	79	0.00
July 29	88	77	0.08
July 30	86	73	0.62
July 31	91	77	0.01

August 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	89	79	0.00
August 2	88	79	0.03
August 3	88	77	0.26
August 4	89	76	0.00
August 5	88	77	0.23
August 6	88	75	0.54
August 7	88	76	0.01
August 8	89	78	0.01
August 9	88	79	0.00
August 10	88	77	0.00
August 11	88	77	0.09
August 12	89	77	0.05
August 13	89	77	0.09
August 14	89	78	0.00
August 15	89	78	0.02
August 16	89	77	0.14
August 17	89	77	0.08
August 18	93	76	0.04
August 19	90	76	0.33
August 20	88	77	0.24
August 21	88	75	0.41
August 22	87	76	1.48
August 23	83	75	0.51
August 24	87	75	0.70
August 25	89	76	0.00
August 26	89	77	0.95
August 27	89	77	0.85
August 28	91	77	0.01
August 29	89	76	0.22
August 30	89	77	0.01
August 31	89	78	0.04

September 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	77	0.12
September 2	87	78	0.06
September 3	87	78	0.30
September 4	89	77	0.00
September 5	89	77	0.25
September 6	89	77	0.51
September 7	89	76	0.01
September 8	90	78	0.13
September 9	89	76	0.00
September 10	89	77	0.11
September 11	87	78	0.99
September 12	93	77	0.00
September 13	88	77	0.14
September 14	90	78	0.00
September 15	90	77	0.75
September 16	89	76	0.00
September 17	89	79	0.06
September 18	89	77	0.07
September 19	88	77	0.29
September 20	89	77	0.06
September 21	94	77	0.00
September 22	94	79	0.00
September 23	91	76	0.11
September 24	91	76	0.22
September 25	91	77	0.03
September 26	89	75	0.87
September 27	86	76	0.30
September 28	83	74	0.36
September 29	88	74	0.00
September 30	91	78	0.08

October 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	90	77	0.01
October 2	90	76	0.00
October 3	90	78	0.02
October 4	89	76	0.17
October 5	88	76	0.25
October 6	88	75	0.11
October 7	87	76	0.00
October 8	85	75	0.30
October 9	87	75	0.01
October 10	86	75	0.00
October 11	86	74	0.42
October 12	84	76	0.75
October 13	80	76	0.05
October 14	88	75	0.11
October 15	86	76	0.00
October 16	88	76	0.08
October 17	80	76	1.77
October 18	87	75	0.05
October 19	87	76	0.63
October 20	87	74	0.71
October 21	82	75	0.59
October 22	90	77	0.05
October 23	89	77	0.32
October 24	90	77	0.00
October 25	87	77	0.00
October 26	90	76	0.00
October 27	89	76	0.00
October 28	88	76	0.04
October 29	87	76	0.14
October 30	87	75	0.00
October 31	87	75	0.80

November 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	83	75	0.63
November 2	85	75	0.03
November 3	86	75	0.55
November 4	87	75	0.06
November 5	85	75	0.67
November 6	85	75	0.08
November 7	86	76	0.00
November 8	86	75	0.07
November 9	86	75	0.14
November 10	84	74	0.96
November 11	87	76	0.04
November 12	86	75	0.58
November 13	86	75	0.01
November 14	85	76	0.03
November 15	83	73	0.68
November 16	82	74	0.53
November 17	82	75	1.71
November 18	83	77	0.27
November 19	84	77	0.19
November 20	85	77	0.04
November 21	83	76	0.08
November 22	89	75	0.68
November 23	87	75	0.00
November 24	87	73	0.00
November 25	86	73	0.01
November 26	85	70	0.49
November 27	87	71	0.00
November 28	84	72	0.02
November 29	84	72	0.00
November 30	84	72	1.29

December 1999 San Juan Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	79	72	0.30
December 2	78	71	2.45
December 3	82	76	0.00
December 4	82	73	0.02
December 5	79	73	0.68
December 6	83	72	0.22
December 7	81	72	0.15
December 8	79	76	0.00
December 9	82	73	0.04
December 10	82	73	0.00
December 11	81	69	0.09
December 12	81	72	0.00
December 13	83	73	0.02
December 14	81	72	0.00
December 15	81	75	0.00
December 16	82	73	0.04
December 17	81	71	0.10
December 18	81	71	0.14
December 19	81	72	0.02
December 20	81	72	0.13
December 21	82	72	0.12
December 22	83	70	0.20
December 23	82	73	0.39
December 24	82	73	0.14
December 25	82	73	0.02
December 26	81	72	0.34
December 27	81	70	0.00
December 28	79	72	0.28
December 29	85	73	0.05
December 30	83	74	0.01
December 31	81	72	0.20

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Weather Station Details

Years	Station	Coordinates
1956–2024	San Juan Airport	location