Williamsport Weather in 1999

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

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1999 Williamsport Weather Extremes
Highest temperature	97 °F	July 18
Lowest temperature	2 °F	January 10
Highest daily low	73 °F	July 6
Lowest daily high	19 °F	January 14
Most daily precipitation	6.3 inches	September 7
Most daily snow	7.6 inches	March 4
Total annual precipitation	45.5 inches	-
Total annual snow	35.1 inches	-

What was the hottest temperature in Williamsport in 1999?

The highest temperature recorded in Williamsport, Pennsylvania in 1999 was 97 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Williamsport in 1999

Rank	Temperature	Date
1	97 °F	Jul 18
1	97 °F	Jul 5
3	96 °F	Jul 6
4	95 °F	Jul 16
4	95 °F	Jul 4
4	95 °F	Jun 7
7	94 °F	Jul 31
7	94 °F	Jul 17
9	93 °F	Jul 28
9	93 °F	Jun 8

What was the coldest temperature in Williamsport in 1999?

The lowest temperature recorded in Williamsport, Pennsylvania in 1999 was 2 °F which happened on Jan 10.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Williamsport in 1999

Rank	Temperature	Date
1	2 °F	January 10
2	4 °F	January 2
3	5 °F	January 6
4	7 °F	February 23
4	7 °F	January 1
6	8 °F	December 28
6	8 °F	January 11
6	8 °F	January 8
9	9 °F	January 14
9	9 °F	January 5

January 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	24	7	0.00	0.0
January 2	20	4	0.09	0.0
January 3	39	20	0.96	0.7
January 4	23	14	0.00	0.0
January 5	22	9	0.00	0.0
January 6	24	5	0.00	0.3
January 7	25	10	0.00	0.3
January 8	25	8	0.28	1.5
January 9	34	19	0.28	0.8
January 10	22	2	0.00	0.0
January 11	19	8	0.02	0.4
January 12	30	17	0.01	0.2
January 13	35	13	0.20	1.1
January 14	19	9	0.49	2.7
January 15	29	18	0.75	3.9
January 16	34	15	0.00	0.0
January 17	42	16	0.00	0.0
January 18	49	31	0.46	0.0
January 19	43	29	0.00	0.0
January 20	44	26	0.00	0.0
January 21	35	22	0.12	0.0
January 22	41	33	0.01	0.0
January 23	58	38	0.60	0.0
January 24	59	35	0.51	0.0
January 25	36	32	0.13	0.6
January 26	39	23	0.00	0.0
January 27	40	21	0.00	0.0
January 28	51	28	0.00	0.0
January 29	40	23	0.00	0.0
January 30	38	21	0.00	0.0
January 31	33	13	0.00	0.0

February 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	36	15	0.15	0.0
February 2	41	34	0.36	0.0
February 3	49	27	0.00	0.0
February 4	47	27	0.00	0.0
February 5	40	27	0.00	0.0
February 6	41	29	0.00	0.0
February 7	37	30	0.55	3.6
February 8	40	21	0.30	1.6
February 9	41	20	0.00	0.0
February 10	50	23	0.00	0.0
February 11	52	23	0.00	0.0
February 12	59	30	0.14	1.0
February 13	31	24	0.01	0.1
February 14	36	18	0.00	0.0
February 15	48	15	0.00	0.0
February 16	57	22	0.00	0.0
February 17	47	33	0.03	0.0
February 18	40	33	0.00	0.0
February 19	39	29	0.00	0.0
February 20	36	22	0.00	0.0
February 21	31	20	0.00	0.0
February 22	27	11	0.00	0.0
February 23	29	7	0.00	0.0
February 24	36	18	0.00	0.0
February 25	35	16	0.00	0.0
February 26	46	24	0.00	0.0
February 27	43	20	0.02	0.0
February 28	41	36	0.40	0.0

March 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	41	32	0.00	0.0
March 2	48	31	0.00	0.0
March 3	60	33	1.32	0.0
March 4	47	25	0.57	7.6
March 5	35	15	0.00	0.0
March 6	36	20	0.23	2.0
March 7	24	14	0.00	0.0
March 8	30	10	0.00	0.0
March 9	28	15	0.04	0.5
March 10	35	21	0.01	0.6
March 11	35	20	0.00	0.0
March 12	33	23	0.00	0.0
March 13	41	25	0.00	0.0
March 14	37	24	0.29	2.4
March 15	41	28	0.02	0.9
March 16	50	27	0.00	0.0
March 17	67	26	0.00	0.0
March 18	55	36	0.00	0.0
March 19	46	36	0.00	0.0
March 20	50	30	0.00	0.0
March 21	44	27	0.95	1.6
March 22	40	33	0.03	0.0
March 23	49	29	0.00	0.0
March 24	56	27	0.00	0.0
March 25	45	28	0.00	0.0
March 26	49	24	0.00	0.0
March 27	58	26	0.00	0.0
March 28	60	39	0.00	0.0
March 29	64	34	0.00	0.0
March 30	62	36	0.00	0.0
March 31	75	29	0.00	0.0

April 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	55	41	0.25
April 2	67	50	0.00
April 3	70	54	0.01
April 4	60	41	0.14
April 5	61	31	0.00
April 6	60	31	0.07
April 7	69	36	0.00
April 8	79	43	0.00
April 9	56	41	0.82
April 10	56	36	0.00
April 11	41	32	0.27
April 12	57	40	0.01
April 13	59	35	0.00
April 14	67	39	0.00
April 15	65	34	0.00
April 16	54	42	0.21
April 17	48	41	0.00
April 18	53	36	0.00
April 19	54	32	0.05
April 20	54	35	0.17
April 21	57	33	0.00
April 22	71	46	0.07
April 23	55	38	0.37
April 24	57	33	0.00
April 25	64	28	0.00
April 26	75	32	0.00
April 27	64	35	0.00
April 28	66	35	0.00
April 29	68	37	0.00
April 30	71	38	0.00

May 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	73	42	0.00
May 2	77	41	0.00
May 3	65	39	0.04
May 4	75	50	0.04
May 5	80	54	0.00
May 6	68	56	0.00
May 7	66	58	0.29
May 8	69	52	0.68
May 9	69	49	0.00
May 10	73	41	0.00
May 11	74	42	0.00
May 12	75	46	0.00
May 13	71	48	0.00
May 14	71	44	0.00
May 15	74	42	0.00
May 16	70	48	0.00
May 17	74	51	0.00
May 18	78	56	0.00
May 19	76	56	0.00
May 20	74	50	0.00
May 21	79	42	0.00
May 22	81	48	0.00
May 23	72	60	0.66
May 24	72	51	0.71
May 25	61	47	0.03
May 26	63	52	0.00
May 27	74	49	0.00
May 28	84	43	0.00
May 29	87	49	0.00
May 30	88	51	0.00
May 31	88	55	0.00

June 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	81	59	0.01
June 2	85	64	0.28
June 3	73	60	0.02
June 4	76	51	0.00
June 5	79	45	0.00
June 6	86	60	0.00
June 7	95	64	0.00
June 8	93	64	0.00
June 9	91	59	0.00
June 10	68	64	0.06
June 11	81	56	0.00
June 12	85	49	0.00
June 13	84	66	0.07
June 14	77	62	0.00
June 15	76	55	0.00
June 16	73	47	0.03
June 17	59	52	1.04
June 18	74	48	0.00
June 19	76	47	0.00
June 20	76	56	0.00
June 21	81	59	0.00
June 22	83	54	0.00
June 23	84	54	0.00
June 24	84	56	0.00
June 25	85	61	0.00
June 26	92	68	0.00
June 27	90	65	0.18
June 28	84	72	0.89
June 29	84	63	0.36
June 30	78	54	0.00

July 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	82	67	0.02
July 2	86	70	0.02
July 3	90	68	0.00
July 4	95	70	0.00
July 5	97	73	0.00
July 6	96	73	0.00
July 7	87	63	0.00
July 8	85	58	0.00
July 9	89	62	0.38
July 10	80	55	0.09
July 11	78	52	0.00
July 12	77	50	0.00
July 13	81	57	0.00
July 14	80	59	0.00
July 15	90	56	0.00
July 16	95	63	0.00
July 17	94	67	0.00
July 18	97	67	0.00
July 19	86	69	0.22
July 20	87	65	0.06
July 21	80	63	0.00
July 22	85	70	1.38
July 23	92	69	0.00
July 24	90	69	0.07
July 25	91	65	0.31
July 26	87	65	0.00
July 27	92	66	0.00
July 28	93	66	0.00
July 29	89	67	0.09
July 30	89	64	0.99
July 31	94	69	0.03

August 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	91	67	0.00
August 2	83	61	0.00
August 3	82	55	0.00
August 4	86	55	0.00
August 5	83	60	0.11
August 6	84	56	0.00
August 7	86	54	0.00
August 8	81	67	0.17
August 9	77	54	0.00
August 10	75	54	0.00
August 11	87	57	0.00
August 12	88	60	0.00
August 13	91	63	0.41
August 14	86	66	0.51
August 15	82	59	0.00
August 16	82	53	0.00
August 17	91	60	0.00
August 18	80	64	0.00
August 19	80	58	0.00
August 20	71	59	2.30
August 21	66	57	0.00
August 22	80	55	0.00
August 23	81	52	0.00
August 24	76	59	0.01
August 25	79	63	0.02
August 26	78	66	0.32
August 27	81	66	0.01
August 28	86	62	0.00
August 29	80	54	0.00
August 30	74	50	0.00
August 31	78	48	0.00

September 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	84	51	0.00
September 2	88	53	0.00
September 3	85	56	0.00
September 4	81	61	0.00
September 5	82	67	0.17
September 6	85	71	0.39
September 7	78	67	6.29
September 8	81	66	0.00
September 9	82	64	0.47
September 10	80	59	0.00
September 11	78	51	0.00
September 12	78	50	0.00
September 13	78	52	0.00
September 14	69	62	0.27
September 15	66	59	0.06
September 16	59	55	2.38
September 17	71	52	0.01
September 18	73	45	0.00
September 19	73	48	0.00
September 20	73	55	0.35
September 21	55	49	0.21
September 22	61	46	0.01
September 23	74	40	0.00
September 24	75	45	0.00
September 25	71	49	0.00
September 26	72	45	0.00
September 27	67	55	0.00
September 28	71	64	0.12
September 29	69	63	1.27
September 30	66	44	0.60

October 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	72	39	0.00
October 2	73	43	0.00
October 3	63	52	0.00
October 4	56	48	0.71
October 5	54	36	0.00
October 6	63	36	0.00
October 7	53	32	0.00
October 8	59	32	0.00
October 9	65	53	0.14
October 10	67	59	0.48
October 11	68	43	0.00
October 12	63	36	0.00
October 13	68	44	0.45
October 14	55	35	0.04
October 15	59	32	0.00
October 16	61	36	0.00
October 17	67	46	0.00
October 18	57	36	0.00
October 19	53	31	0.04
October 20	54	38	0.05
October 21	55	36	0.00
October 22	54	35	0.03
October 23	50	41	0.01
October 24	53	41	0.00
October 25	58	34	0.00
October 26	65	30	0.00
October 27	53	33	0.00
October 28	55	31	0.00
October 29	67	33	0.00
October 30	72	37	0.00
October 31	70	39	0.00

November 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	66	43	0.00	0.0
November 2	67	45	0.46	0.0
November 3	46	36	0.00	0.0
November 4	52	30	0.00	0.0
November 5	66	27	0.00	0.0
November 6	66	38	0.00	0.0
November 7	49	28	0.00	0.0
November 8	50	30	0.00	0.0
November 9	65	31	0.00	0.0
November 10	68	45	0.01	0.0
November 11	58	28	0.01	0.0
November 12	47	27	0.00	0.0
November 13	57	39	0.00	0.0
November 14	59	35	0.00	0.0
November 15	45	38	0.00	0.0
November 16	39	28	0.00	0.0
November 17	43	26	0.00	0.0
November 18	47	20	0.00	0.0
November 19	58	29	0.00	0.0
November 20	52	36	0.13	0.0
November 21	61	44	0.01	0.0
November 22	60	42	0.02	0.0
November 23	60	55	0.00	0.0
November 24	65	50	0.00	0.0
November 25	53	42	0.83	0.0
November 26	64	42	1.40	0.0
November 27	56	44	0.00	0.0
November 28	50	34	0.00	0.0
November 29	43	28	0.02	0.1
November 30	34	25	0.00	0.0

December 1999 Williamsport Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	34	20	0.00	0.0
December 2	45	19	0.00	0.0
December 3	47	27	0.00	0.0
December 4	55	35	0.02	0.0
December 5	64	38	0.00	0.0
December 6	58	41	0.24	0.0
December 7	48	28	0.00	0.0
December 8	44	23	0.00	0.0
December 9	48	25	0.00	0.0
December 10	44	28	0.04	0.0
December 11	45	29	0.00	0.0
December 12	40	25	0.00	0.0
December 13	40	27	0.10	0.0
December 14	41	35	1.37	0.0
December 15	44	36	0.01	0.0
December 16	43	34	0.03	0.0
December 17	40	28	0.00	0.0
December 18	39	32	0.00	0.0
December 19	44	30	0.00	0.0
December 20	42	32	0.53	0.0
December 21	40	30	0.00	0.0
December 22	34	21	0.00	0.0
December 23	32	17	0.00	0.0
December 24	25	13	0.00	0.0
December 25	27	12	0.00	0.0
December 26	34	22	0.00	0.0
December 27	30	22	0.02	0.6
December 28	26	8	0.00	0.0
December 29	33	23	0.00	0.0
December 30	43	20	0.00	0.0
December 31	44	25	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1948–2024	Williamsport	location
1895–1947	Williamsport	location