Philadelphia Weather in 1999

Historical record of Philadelphia, Pennsylvania weather for the year 1999 based on NOAA data.

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1999 Philadelphia Weather Extremes
Highest temperature	100 °F	July 5
Lowest temperature	12 °F	January 2
Highest daily low	81 °F	July 5
Lowest daily high	25 °F	January 11
Most daily precipitation	6.6 inches	September 16
Most daily snow	4.7 inches	March 14
Total annual precipitation	48.5 inches	-
Total annual snow	10.5 inches	-

What was the hottest temperature in Philadelphia in 1999?

The highest temperature recorded in Philadelphia, Pennsylvania in 1999 was 100 °F which happened on July 5.

Highest Temperatures: All-Time By Year

Highest Temperatures in Philadelphia in 1999

Rank	Temperature	Date
1	100 °F	Jul 5
2	99 °F	Jul 31
2	99 °F	Jul 4
4	98 °F	Jul 17
4	98 °F	Jul 6
6	97 °F	Jul 19
7	96 °F	Aug 1
7	96 °F	Jul 28
7	96 °F	Jul 25
7	96 °F	Jul 18

What was the coldest temperature in Philadelphia in 1999?

The lowest temperature recorded in Philadelphia, Pennsylvania in 1999 was 12 °F which happened on Jan 2.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Philadelphia in 1999

Rank	Temperature	Date
1	12 °F	January 2
2	14 °F	January 6
2	14 °F	January 5
4	16 °F	February 23
5	17 °F	February 22
6	18 °F	December 25
6	18 °F	March 8
6	18 °F	January 1
9	19 °F	January 4
10	20 °F	March 7
10	20 °F	January 31
10	20 °F	January 11

January 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	31	18	0.00	0.0
January 2	26	12	0.02	0.8
January 3	56	26	1.50	0.0
January 4	30	19	0.00	0.0
January 5	27	14	0.00	0.0
January 6	34	14	0.00	0.0
January 7	41	24	0.00	0.0
January 8	32	23	0.33	3.2
January 9	41	30	0.18	0.0
January 10	31	22	0.00	0.0
January 11	25	20	0.00	0.0
January 12	51	21	0.00	0.0
January 13	54	30	0.02	0.0
January 14	29	21	0.10	0.8
January 15	39	26	0.87	0.1
January 16	48	23	0.00	0.0
January 17	56	30	0.00	0.0
January 18	59	36	0.71	0.0
January 19	50	34	0.00	0.0
January 20	47	34	0.04	0.0
January 21	50	32	0.11	0.0
January 22	46	42	0.04	0.0
January 23	69	45	0.04	0.0
January 24	64	39	0.91	0.0
January 25	43	34	0.02	0.0
January 26	45	29	0.00	0.0
January 27	49	28	0.00	0.0
January 28	46	33	0.00	0.0
January 29	43	30	0.00	0.0
January 30	43	26	0.00	0.0
January 31	32	20	0.00	0.0

February 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	41	21	0.00	0.0
February 2	56	37	0.72	0.0
February 3	54	36	0.00	0.0
February 4	49	33	0.04	0.0
February 5	46	35	0.00	0.0
February 6	45	31	0.01	0.0
February 7	44	33	0.21	0.7
February 8	40	31	0.16	0.0
February 9	48	27	0.00	0.0
February 10	53	33	0.00	0.0
February 11	57	28	0.00	0.0
February 12	70	35	0.37	0.0
February 13	41	27	0.00	0.0
February 14	35	22	0.00	0.0
February 15	48	21	0.00	0.0
February 16	62	28	0.00	0.0
February 17	50	34	0.06	0.0
February 18	47	37	0.85	0.0
February 19	46	34	0.00	0.0
February 20	41	30	0.00	0.0
February 21	37	23	0.00	0.0
February 22	32	17	0.00	0.0
February 23	29	16	0.00	0.0
February 24	40	26	0.00	0.0
February 25	43	26	0.00	0.0
February 26	49	32	0.00	0.0
February 27	49	27	0.01	0.0
February 28	52	40	0.52	0.0

March 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	47	36	0.04	0.0
March 2	51	33	0.00	0.0
March 3	61	35	0.31	0.0
March 4	52	32	0.02	0.0
March 5	44	28	0.00	0.0
March 6	49	32	0.41	0.0
March 7	44	20	0.00	0.0
March 8	37	18	0.00	0.0
March 9	35	22	0.00	0.0
March 10	44	27	0.01	0.1
March 11	43	26	0.00	0.0
March 12	38	29	0.00	0.0
March 13	50	29	0.00	0.0
March 14	41	33	0.94	4.7
March 15	43	34	0.14	0.1
March 16	49	29	0.00	0.0
March 17	68	33	0.00	0.0
March 18	71	44	0.00	0.0
March 19	51	39	0.00	0.0
March 20	53	36	0.00	0.0
March 21	55	33	1.60	0.0
March 22	49	36	0.42	0.0
March 23	54	33	0.00	0.0
March 24	60	43	0.03	0.0
March 25	51	36	0.00	0.0
March 26	51	32	0.00	0.0
March 27	54	34	0.07	0.0
March 28	52	41	0.03	0.0
March 29	68	43	0.00	0.0
March 30	64	43	0.00	0.0
March 31	71	39	0.00	0.0

April 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	57	48	0.18
April 2	69	47	0.00
April 3	66	46	0.00
April 4	79	50	0.22
April 5	58	39	0.00
April 6	63	37	0.00
April 7	71	46	0.00
April 8	80	47	0.00
April 9	67	44	0.96
April 10	59	42	0.14
April 11	48	43	0.61
April 12	59	43	0.06
April 13	62	42	0.00
April 14	68	41	0.00
April 15	64	41	0.11
April 16	53	42	0.22
April 17	58	41	0.00
April 18	60	43	0.00
April 19	57	39	0.00
April 20	53	44	0.05
April 21	58	40	0.00
April 22	74	47	0.22
April 23	56	48	0.54
April 24	60	39	0.00
April 25	61	38	0.00
April 26	74	45	0.00
April 27	65	47	0.00
April 28	65	46	0.00
April 29	70	47	0.00
April 30	67	45	0.00

May 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	67	45	0.00
May 2	67	48	0.00
May 3	59	52	0.07
May 4	63	55	0.00
May 5	78	57	0.00
May 6	65	52	0.00
May 7	64	54	0.00
May 8	80	57	0.03
May 9	74	56	0.00
May 10	73	53	0.00
May 11	74	53	0.00
May 12	79	51	0.19
May 13	63	51	0.08
May 14	67	49	0.00
May 15	71	47	0.00
May 16	70	50	0.00
May 17	76	51	0.00
May 18	75	55	0.00
May 19	66	61	0.58
May 20	75	55	0.00
May 21	78	53	0.00
May 22	84	55	0.05
May 23	74	61	0.21
May 24	73	57	2.49
May 25	73	51	0.00
May 26	77	54	0.00
May 27	73	56	0.00
May 28	84	55	0.00
May 29	87	58	0.00
May 30	89	63	0.00
May 31	89	61	0.00

June 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	86	65	0.00
June 2	87	67	0.00
June 3	81	68	0.00
June 4	78	62	0.00
June 5	79	58	0.00
June 6	82	56	0.00
June 7	94	67	0.00
June 8	95	76	0.00
June 9	89	65	0.00
June 10	74	58	0.00
June 11	80	59	0.00
June 12	78	60	0.01
June 13	80	67	0.04
June 14	84	67	0.30
June 15	83	67	0.00
June 16	76	61	0.00
June 17	70	60	0.09
June 18	76	58	0.00
June 19	79	57	0.00
June 20	70	58	0.52
June 21	67	59	0.16
June 22	84	57	0.00
June 23	86	61	0.00
June 24	83	61	0.00
June 25	83	61	0.00
June 26	89	68	0.00
June 27	90	70	0.00
June 28	86	75	0.00
June 29	91	75	0.04
June 30	81	69	0.00

July 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	84	69	0.27
July 2	87	72	0.10
July 3	90	71	0.00
July 4	99	77	0.00
July 5	100	81	0.00
July 6	98	79	0.00
July 7	91	79	0.00
July 8	91	69	0.00
July 9	94	67	0.00
July 10	88	69	0.00
July 11	83	63	0.00
July 12	80	55	0.00
July 13	83	63	0.00
July 14	80	62	0.00
July 15	87	59	0.00
July 16	93	69	0.00
July 17	98	72	0.00
July 18	96	74	0.00
July 19	97	74	0.85
July 20	82	71	0.00
July 21	87	68	0.00
July 22	86	73	0.00
July 23	94	75	0.00
July 24	93	77	0.00
July 25	96	75	0.00
July 26	92	74	0.00
July 27	94	75	0.00
July 28	96	74	0.00
July 29	91	72	0.00
July 30	94	74	0.00
July 31	99	75	0.00

August 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	96	79	0.00
August 2	94	74	0.00
August 3	90	71	0.00
August 4	89	66	0.00
August 5	91	68	0.00
August 6	90	68	0.00
August 7	89	72	0.00
August 8	86	76	0.10
August 9	82	67	0.00
August 10	83	64	0.00
August 11	92	69	0.00
August 12	93	72	0.00
August 13	94	75	0.00
August 14	93	71	1.37
August 15	85	72	0.06
August 16	88	71	0.00
August 17	92	72	0.00
August 18	90	74	0.00
August 19	87	70	0.00
August 20	74	65	1.00
August 21	71	62	0.06
August 22	75	64	0.00
August 23	85	60	0.00
August 24	81	67	0.01
August 25	86	66	0.33
August 26	85	70	2.39
August 27	83	69	0.00
August 28	87	69	0.00
August 29	89	67	0.00
August 30	71	60	0.00
August 31	74	63	0.00

September 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	80	64	0.00
September 2	86	66	0.00
September 3	84	65	0.00
September 4	81	72	0.04
September 5	83	73	0.54
September 6	87	75	0.00
September 7	83	73	1.22
September 8	85	73	0.00
September 9	84	69	1.59
September 10	79	69	0.21
September 11	79	62	0.00
September 12	81	58	0.00
September 13	80	62	0.00
September 14	80	65	0.00
September 15	73	68	0.35
September 16	71	60	6.63
September 17	73	60	0.00
September 18	74	55	0.00
September 19	74	53	0.00
September 20	75	56	0.00
September 21	67	53	1.47
September 22	63	48	0.18
September 23	72	48	0.00
September 24	77	54	0.00
September 25	78	57	0.00
September 26	77	57	0.00
September 27	76	61	0.00
September 28	79	65	0.00
September 29	79	67	0.00
September 30	72	54	0.84

October 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	70	48	0.00
October 2	75	52	0.00
October 3	77	61	0.00
October 4	70	52	1.08
October 5	55	45	0.06
October 6	68	41	0.00
October 7	56	42	0.00
October 8	64	41	0.00
October 9	71	54	0.06
October 10	68	62	0.70
October 11	73	55	0.00
October 12	67	45	0.00
October 13	72	47	0.01
October 14	66	46	0.00
October 15	63	42	0.00
October 16	74	49	0.00
October 17	70	55	0.40
October 18	64	47	0.01
October 19	59	43	0.00
October 20	54	50	0.80
October 21	60	43	0.00
October 22	64	40	0.41
October 23	56	44	0.02
October 24	57	39	0.00
October 25	57	41	0.00
October 26	65	46	0.00
October 27	61	44	0.00
October 28	57	40	0.00
October 29	68	42	0.00
October 30	71	45	0.00
October 31	69	52	0.00

November 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	72	53	0.00
November 2	69	52	0.88
November 3	59	41	0.00
November 4	53	39	0.00
November 5	65	39	0.00
November 6	69	50	0.00
November 7	57	41	0.00
November 8	53	38	0.00
November 9	66	37	0.00
November 10	73	53	0.00
November 11	63	37	0.00
November 12	54	35	0.00
November 13	58	43	0.00
November 14	62	42	0.00
November 15	50	40	0.00
November 16	43	34	0.00
November 17	44	29	0.00
November 18	52	31	0.00
November 19	61	36	0.00
November 20	69	45	0.00
November 21	71	47	0.00
November 22	59	54	0.01
November 23	62	55	0.02
November 24	63	57	0.00
November 25	60	50	0.45
November 26	70	51	0.50
November 27	58	48	0.45
November 28	51	40	0.00
November 29	48	34	0.00
November 30	40	29	0.00

December 1999 Philadelphia Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	37	23	0.00
December 2	49	28	0.00
December 3	57	32	0.00
December 4	65	38	0.01
December 5	68	40	0.00
December 6	60	50	0.51
December 7	51	38	0.00
December 8	51	31	0.00
December 9	56	34	0.00
December 10	56	38	0.36
December 11	49	35	0.00
December 12	49	31	0.00
December 13	45	32	0.57
December 14	47	42	1.16
December 15	48	41	0.02
December 16	50	36	0.00
December 17	46	33	0.00
December 18	46	35	0.00
December 19	46	34	0.00
December 20	53	37	0.35
December 21	48	36	0.01
December 22	40	31	0.00
December 23	43	25	0.00
December 24	30	21	0.00
December 25	31	18	0.00
December 26	37	25	0.00
December 27	37	30	0.00
December 28	32	22	0.00
December 29	38	27	0.00
December 30	53	33	0.00
December 31	46	32	0.00

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Weather Station Details

Years	Station	Coordinates
1941–2024	Philadelphia International Airport	location
1916–1940	Philadelphia Naval Yard	location
1894–1915	Drexel University	location