Seattle Weather in 1999

Historical record of Seattle, Washington weather for the year 1999 based on NOAA data.

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1999 Seattle Weather Extremes
Highest temperature	87 °F	September 13
Lowest temperature	30 °F	December 27
Highest daily low	61 °F	June 13
Lowest daily high	38 °F	December 27
Most daily precipitation	1.5 inches	November 12
Total annual precipitation	42.1 inches	-

What was the hottest temperature in Seattle in 1999?

The highest temperature recorded in Seattle, Washington in 1999 was 87 °F which happened on September 13.

Highest Temperatures: All-Time By Year

Highest Temperatures in Seattle in 1999

Rank	Temperature	Date
1	87 °F	Sep 13
2	86 °F	Jul 9
3	85 °F	Jun 12
4	84 °F	Jun 14
5	83 °F	Jul 27
5	83 °F	Jul 10
7	82 °F	Sep 19
7	82 °F	Aug 23
7	82 °F	Jul 28
7	82 °F	Jul 11
7	82 °F	Jun 13

What was the coldest temperature in Seattle in 1999?

The lowest temperature recorded in Seattle, Washington in 1999 was 30 °F which happened 5 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Seattle in 1999

Rank	Temperature	Date
1	30 °F	December 27
1	30 °F	December 26
1	30 °F	March 6
1	30 °F	January 24
1	30 °F	January 3
6	31 °F	December 28
6	31 °F	December 25
6	31 °F	March 7
6	31 °F	February 9
10	32 °F	December 24
10	32 °F	March 28
10	32 °F	February 20
10	32 °F	February 10
10	32 °F	January 23
10	32 °F	January 2

January 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	45	39	0.00
January 2	43	32	0.00
January 3	44	30	0.00
January 4	44	35	0.00
January 5	50	35	0.00
January 6	46	40	0.12
January 7	48	40	0.01
January 8	46	42	0.00
January 9	44	41	0.14
January 10	53	43	0.16
January 11	49	40	0.00
January 12	47	42	0.01
January 13	46	39	0.26
January 14	51	43	0.92
January 15	47	40	0.25
January 16	46	39	0.16
January 17	46	39	0.81
January 18	48	43	0.65
January 19	47	43	0.45
January 20	52	42	0.18
January 21	45	41	0.19
January 22	43	38	0.44
January 23	43	32	0.18
January 24	44	30	0.00
January 25	42	34	0.00
January 26	40	35	0.02
January 27	44	37	0.38
January 28	48	37	0.78
January 29	53	35	0.16
January 30	40	34	0.20
January 31	43	34	0.37

February 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	44	37	0.41
February 2	49	40	0.27
February 3	45	39	0.27
February 4	48	39	0.04
February 5	44	38	0.12
February 6	51	40	0.48
February 7	43	37	0.52
February 8	43	33	0.26
February 9	38	31	0.01
February 10	41	32	0.01
February 11	49	33	0.00
February 12	52	44	0.00
February 13	50	37	0.26
February 14	45	34	0.00
February 15	50	33	0.03
February 16	49	42	0.30
February 17	46	37	0.07
February 18	49	37	0.54
February 19	48	38	0.09
February 20	52	32	0.02
February 21	48	41	0.03
February 22	50	42	0.44
February 23	48	40	0.61
February 24	53	44	0.74
February 25	48	38	0.01
February 26	47	36	0.04
February 27	50	38	1.04
February 28	50	38	0.34

March 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	45	37	0.32
March 2	48	34	0.15
March 3	47	37	0.20
March 4	45	36	0.09
March 5	45	35	0.00
March 6	50	30	0.00
March 7	49	31	0.00
March 8	53	39	0.27
March 9	48	35	0.00
March 10	50	39	0.00
March 11	52	33	0.00
March 12	47	42	0.67
March 13	54	45	0.56
March 14	50	41	0.21
March 15	44	37	0.06
March 16	50	37	0.00
March 17	52	40	0.02
March 18	52	40	0.02
March 19	60	40	0.00
March 20	63	42	0.00
March 21	56	46	0.10
March 22	64	45	0.15
March 23	58	43	0.00
March 24	52	42	0.27
March 25	51	38	0.08
March 26	45	38	0.02
March 27	45	36	0.04
March 28	47	32	0.26
March 29	48	38	0.17
March 30	48	34	0.00
March 31	50	35	0.00

April 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	55	34	0.00
April 2	52	35	0.19
April 3	46	35	0.12
April 4	45	36	0.06
April 5	52	35	0.01
April 6	56	34	0.00
April 7	49	41	0.10
April 8	49	37	0.04
April 9	48	35	0.00
April 10	53	41	0.08
April 11	64	37	0.00
April 12	55	42	0.02
April 13	53	38	0.00
April 14	62	35	0.00
April 15	74	42	0.00
April 16	81	48	0.00
April 17	68	49	0.00
April 18	59	45	0.00
April 19	49	43	0.21
April 20	52	42	0.17
April 21	51	40	0.00
April 22	61	39	0.00
April 23	68	42	0.00
April 24	72	43	0.00
April 25	57	42	0.18
April 26	50	39	0.01
April 27	53	39	0.21
April 28	58	40	0.00
April 29	63	41	0.00
April 30	64	42	0.09

May 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	54	44	0.05
May 2	49	43	0.20
May 3	53	42	0.18
May 4	53	39	0.00
May 5	61	40	0.00
May 6	59	40	0.10
May 7	48	38	0.19
May 8	51	36	0.00
May 9	53	38	0.09
May 10	58	38	0.00
May 11	55	45	0.18
May 12	53	43	0.22
May 13	54	41	0.04
May 14	57	40	0.00
May 15	57	44	0.00
May 16	56	46	0.06
May 17	57	47	0.65
May 18	59	48	0.04
May 19	58	43	0.00
May 20	60	44	0.00
May 21	63	46	0.00
May 22	70	47	0.00
May 23	78	50	0.00
May 24	71	54	0.00
May 25	61	48	0.11
May 26	68	44	0.00
May 27	70	49	0.00
May 28	64	48	0.00
May 29	68	45	0.00
May 30	69	46	0.00
May 31	61	49	0.01

June 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	57	45	0.00
June 2	61	43	0.00
June 3	66	46	0.00
June 4	57	49	0.00
June 5	58	46	0.07
June 6	57	43	0.00
June 7	60	45	0.00
June 8	59	47	0.09
June 9	63	49	0.00
June 10	66	48	0.00
June 11	79	48	0.00
June 12	85	55	0.00
June 13	82	61	0.00
June 14	84	57	0.00
June 15	67	54	0.00
June 16	70	53	0.00
June 17	70	52	0.00
June 18	65	52	0.02
June 19	65	53	0.00
June 20	62	53	0.17
June 21	61	53	0.09
June 22	62	51	0.06
June 23	69	53	0.29
June 24	65	53	1.00
June 25	66	51	0.00
June 26	62	50	0.00
June 27	64	50	0.00
June 28	60	49	0.04
June 29	64	53	0.02
June 30	65	55	0.01

July 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	63	50	0.00
July 2	62	48	0.32
July 3	61	50	0.03
July 4	67	52	0.00
July 5	74	50	0.00
July 6	81	55	0.00
July 7	63	53	0.00
July 8	71	50	0.00
July 9	86	54	0.00
July 10	83	57	0.00
July 11	82	54	0.00
July 12	77	57	0.00
July 13	73	53	0.00
July 14	65	52	0.00
July 15	68	50	0.00
July 16	62	54	0.64
July 17	58	53	0.17
July 18	69	52	0.00
July 19	79	52	0.00
July 20	75	54	0.00
July 21	69	56	0.00
July 22	74	56	0.00
July 23	70	53	0.00
July 24	67	54	0.02
July 25	67	50	0.00
July 26	77	51	0.00
July 27	83	54	0.00
July 28	82	55	0.00
July 29	66	54	0.00
July 30	73	57	0.00
July 31	77	56	0.00

August 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	72	53	0.00
August 2	80	53	0.00
August 3	74	57	0.21
August 4	79	55	0.06
August 5	77	58	0.05
August 6	71	60	0.25
August 7	70	59	0.07
August 8	76	56	0.00
August 9	78	58	0.00
August 10	80	56	0.00
August 11	63	57	0.00
August 12	72	56	0.00
August 13	68	56	0.02
August 14	69	56	0.00
August 15	61	55	0.17
August 16	78	57	0.00
August 17	79	58	0.00
August 18	72	55	0.00
August 19	74	58	0.00
August 20	76	55	0.00
August 21	75	59	0.00
August 22	77	55	0.00
August 23	82	57	0.00
August 24	79	54	0.00
August 25	74	59	0.00
August 26	77	55	0.00
August 27	79	58	0.00
August 28	72	60	0.00
August 29	63	53	0.06
August 30	64	51	0.03
August 31	65	50	0.00

September 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	69	47	0.00
September 2	74	51	0.00
September 3	76	49	0.00
September 4	73	53	0.00
September 5	67	57	0.02
September 6	68	54	0.00
September 7	70	49	0.00
September 8	81	52	0.00
September 9	70	51	0.00
September 10	68	48	0.00
September 11	73	51	0.00
September 12	80	54	0.00
September 13	87	55	0.00
September 14	80	52	0.00
September 15	58	52	0.00
September 16	64	51	0.00
September 17	68	51	0.00
September 18	76	55	0.00
September 19	82	55	0.00
September 20	79	55	0.00
September 21	78	55	0.00
September 22	81	52	0.00
September 23	59	50	0.07
September 24	60	49	0.08
September 25	67	48	0.00
September 26	61	44	0.00
September 27	60	44	0.00
September 28	70	42	0.00
September 29	67	47	0.00
September 30	61	47	0.00

October 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	62	42	0.00
October 2	66	46	0.00
October 3	69	45	0.00
October 4	66	46	0.00
October 5	60	50	0.00
October 6	64	52	0.01
October 7	58	53	0.22
October 8	57	50	0.64
October 9	59	46	0.01
October 10	54	43	0.00
October 11	53	47	0.09
October 12	59	48	0.01
October 13	60	48	0.02
October 14	58	46	0.00
October 15	55	40	0.00
October 16	59	36	0.00
October 17	61	40	0.00
October 18	63	44	0.00
October 19	67	47	0.00
October 20	64	41	0.00
October 21	67	41	0.00
October 22	66	42	0.00
October 23	55	45	0.03
October 24	58	45	0.00
October 25	54	45	0.14
October 26	53	41	0.00
October 27	54	40	0.30
October 28	55	47	0.25
October 29	52	46	0.06
October 30	58	48	0.39
October 31	55	41	0.09

November 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	58	38	0.00
November 2	50	37	0.00
November 3	54	38	0.06
November 4	50	36	0.00
November 5	50	34	0.29
November 6	61	48	0.38
November 7	61	49	0.00
November 8	55	48	0.27
November 9	56	47	0.83
November 10	53	47	0.54
November 11	61	48	1.06
November 12	53	46	1.52
November 13	52	45	0.29
November 14	62	47	0.00
November 15	57	47	0.08
November 16	57	47	0.47
November 17	50	42	0.14
November 18	53	38	0.00
November 19	54	47	0.28
November 20	48	39	0.82
November 21	47	39	0.09
November 22	46	41	0.17
November 23	48	42	0.02
November 24	51	44	0.32
November 25	48	41	1.03
November 26	47	39	0.13
November 27	45	38	0.30
November 28	59	42	0.00
November 29	59	40	0.21
November 30	51	44	0.30

December 1999 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	49	43	0.23
December 2	50	36	0.34
December 3	46	35	0.00
December 4	53	34	0.19
December 5	48	43	0.17
December 6	50	42	0.39
December 7	48	39	0.00
December 8	45	39	0.30
December 9	47	41	0.15
December 10	46	41	0.01
December 11	50	46	0.04
December 12	48	37	0.86
December 13	42	36	0.12
December 14	48	39	0.14
December 15	52	48	1.40
December 16	51	42	0.09
December 17	53	41	0.35
December 18	49	40	0.00
December 19	45	40	0.08
December 20	47	41	0.00
December 21	46	37	0.00
December 22	40	36	0.00
December 23	42	33	0.00
December 24	41	32	0.00
December 25	42	31	0.00
December 26	39	30	0.00
December 27	38	30	0.00
December 28	45	31	0.00
December 29	40	35	0.00
December 30	43	39	0.02
December 31	45	36	0.18

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Weather Station Details

Years	Station	Coordinates
1948–2024	Seattle Tacoma International Airport	location
1894–1947	University of Washington	location