Seattle Weather in 1940

Historical record of Seattle, Washington weather for the year 1940 based on NOAA data.

Jump to Month:

Year:

1940 Seattle Weather Extremes
Highest temperature	89 °F	August 18
Lowest temperature	30 °F	December 15
Highest daily low	65 °F	May 9
Lowest daily high	41 °F	November 10
Most daily precipitation	1.2 inches	December 19
Most daily snow	0.8 inches	January 25
Total annual precipitation	34.8 inches	-
Total annual snow	0.8 inches	-

What was the hottest temperature in Seattle in 1940?

The highest temperature recorded in Seattle, Washington in 1940 was 89 °F which happened on August 18.

Highest Temperatures: All-Time By Year

Highest Temperatures in Seattle in 1940

Rank	Temperature	Date
1	89 °F	Aug 18
2	88 °F	Jul 1
3	87 °F	Aug 5
4	86 °F	Aug 17
4	86 °F	Aug 8
4	86 °F	Aug 6
4	86 °F	Jun 24
8	85 °F	Sep 23
8	85 °F	Sep 22
8	85 °F	Jun 10

What was the coldest temperature in Seattle in 1940?

The lowest temperature recorded in Seattle, Washington in 1940 was 30 °F which happened 4 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Seattle in 1940

Rank	Temperature	Date
1	30 °F	December 15
1	30 °F	December 14
1	30 °F	November 12
1	30 °F	November 10
5	31 °F	January 25
5	31 °F	January 24
7	32 °F	December 13
7	32 °F	November 22
7	32 °F	November 9
10	33 °F	November 19

January 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	54	47	0.78	0.0
January 2	55	47	0.28	0.0
January 3	50	43	0.11	0.0
January 4	53	45	0.11	0.0
January 5	49	41	0.00	0.0
January 6	46	34	0.00	0.0
January 7	51	35	0.00	0.0
January 8	52	40	0.01	0.0
January 9	48	42	0.01	0.0
January 10	45	35	0.00	0.0
January 11	41	34	0.09	0.0
January 12	42	35	0.13	0.0
January 13	47	38	0.00	0.0
January 14	48	40	0.00	0.0
January 15	47	38	0.00	0.0
January 16	55	44	0.26	0.0
January 17	48	39	0.00	0.0
January 18	47	40	0.00	0.0
January 19	42	34	0.00	0.0
January 20	52	40	0.00	0.0
January 21	50	38	0.00	0.0
January 22	50	36	0.00	0.0
January 23	50	42	0.00	0.0
January 24	42	31	0.06	0.0
January 25	46	31	0.02	0.8
January 26	53	40	0.46	0.0
January 27	62	45	0.71	0.0
January 28	65	49	0.05	0.0
January 29	60	50	0.02	0.0
January 30	57	47	0.00	0.0
January 31	64	46	0.00	0.0

February 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	63	42	0.00
February 2	53	38	0.12
February 3	50	42	0.17
February 4	54	46	0.15
February 5	52	48	0.83
February 6	54	46	0.70
February 7	51	44	0.01
February 8	51	43	0.16
February 9	53	47	0.07
February 10	50	42	0.02
February 11	49	40	0.00
February 12	49	37	0.62
February 13	54	43	0.09
February 14	51	38	0.15
February 15	54	42	0.05
February 16	50	42	0.89
February 17	49	44	0.03
February 18	54	43	0.00
February 19	53	41	0.00
February 20	51	35	0.00
February 21	56	39	0.00
February 22	46	38	0.03
February 23	46	40	0.30
February 24	52	40	0.16
February 25	49	40	0.72
February 26	53	45	0.30
February 27	52	44	0.23
February 28	52	45	0.83
February 29	53	49	0.02

March 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	54	47	0.48
March 2	59	45	0.15
March 3	54	44	0.00
March 4	52	45	0.92
March 5	57	43	0.02
March 6	51	44	0.08
March 7	54	44	0.41
March 8	50	41	0.13
March 9	52	40	0.00
March 10	52	41	0.00
March 11	52	40	0.00
March 12	56	40	0.00
March 13	60	42	0.00
March 14	59	49	0.02
March 15	59	49	0.13
March 16	54	46	0.10
March 17	57	44	0.00
March 18	43	n/a	0.00
March 19	51	42	0.00
March 20	61	41	0.00
March 21	64	38	0.00
March 22	61	43	0.00
March 23	68	40	0.12
March 24	62	50	0.01
March 25	62	46	0.09
March 26	57	49	0.70
March 27	55	47	0.05
March 28	61	46	0.23
March 29	54	48	0.75
March 30	61	49	0.00
March 31	55	48	0.00

April 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	57	44	0.03
April 2	59	44	0.00
April 3	58	40	0.00
April 4	56	43	0.03
April 5	64	46	0.03
April 6	64	44	0.07
April 7	59	49	0.34
April 8	57	47	0.48
April 9	60	48	0.01
April 10	65	43	0.00
April 11	72	48	0.00
April 12	83	51	0.00
April 13	60	50	0.02
April 14	61	48	0.02
April 15	60	47	0.01
April 16	58	44	0.00
April 17	69	49	0.03
April 18	63	48	0.01
April 19	64	48	0.07
April 20	61	47	0.10
April 21	66	45	0.00
April 22	77	51	0.18
April 23	55	50	0.86
April 24	58	49	0.01
April 25	54	49	0.17
April 26	53	49	0.01
April 27	57	48	0.07
April 28	58	45	0.04
April 29	60	43	0.00
April 30	56	45	1.10

May 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	79	55	0.06
May 2	60	50	0.11
May 3	67	47	0.00
May 4	59	48	0.16
May 5	57	46	0.28
May 6	65	47	0.04
May 7	67	49	0.00
May 8	72	n/a	0.01
May 9	74	65	0.02
May 10	68	55	0.02
May 11	66	49	0.00
May 12	65	50	0.00
May 13	71	49	0.00
May 14	67	52	0.00
May 15	67	52	0.00
May 16	69	50	0.00
May 17	75	51	0.00
May 18	77	53	0.00
May 19	68	55	0.00
May 20	71	51	0.00
May 21	80	53	0.00
May 22	78	56	0.00
May 23	77	55	0.00
May 24	68	51	0.05
May 25	59	49	0.10
May 26	63	47	0.00
May 27	68	48	0.00
May 28	74	50	0.00
May 29	79	56	0.00
May 30	69	55	0.38
May 31	72	55	0.01

June 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	68	56	0.05
June 2	70	56	0.00
June 3	66	53	0.04
June 4	65	52	0.00
June 5	67	51	0.00
June 6	70	53	0.00
June 7	68	50	0.25
June 8	72	50	0.00
June 9	78	54	0.00
June 10	85	56	0.00
June 11	81	59	0.00
June 12	74	60	0.00
June 13	70	55	0.00
June 14	74	52	0.00
June 15	76	55	0.00
June 16	73	55	0.00
June 17	81	53	0.00
June 18	82	56	0.00
June 19	74	56	0.00
June 20	69	53	0.00
June 21	69	52	0.00
June 22	77	50	0.00
June 23	82	56	0.00
June 24	86	58	0.00
June 25	75	57	0.00
June 26	69	53	0.00
June 27	75	54	0.00
June 28	79	55	0.00
June 29	81	57	0.00
June 30	81	56	0.00

July 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	88	55	0.00
July 2	74	57	0.01
July 3	75	54	0.00
July 4	79	56	0.00
July 5	75	53	0.00
July 6	74	51	0.00
July 7	79	55	0.00
July 8	77	54	0.00
July 9	77	52	0.00
July 10	76	58	0.00
July 11	83	56	0.00
July 12	79	59	0.00
July 13	73	59	0.00
July 14	79	56	0.00
July 15	76	56	0.00
July 16	71	55	0.00
July 17	72	57	0.00
July 18	78	56	0.00
July 19	80	56	0.00
July 20	80	58	0.00
July 21	72	58	0.10
July 22	77	58	0.00
July 23	70	58	0.00
July 24	69	59	0.00
July 25	70	59	0.02
July 26	67	60	0.60
July 27	72	60	0.00
July 28	71	60	0.00
July 29	72	60	0.00
July 30	72	59	0.00
July 31	73	55	0.00

August 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	73	58	0.06
August 2	76	57	0.00
August 3	79	57	0.00
August 4	77	57	0.00
August 5	87	64	0.00
August 6	86	58	0.00
August 7	78	57	0.00
August 8	86	58	0.00
August 9	71	59	0.00
August 10	76	59	0.00
August 11	78	58	0.00
August 12	66	58	0.00
August 13	72	57	0.00
August 14	71	57	0.00
August 15	75	55	0.00
August 16	78	55	0.00
August 17	86	60	0.00
August 18	89	60	0.00
August 19	75	56	0.00
August 20	68	60	0.00
August 21	69	59	0.00
August 22	66	56	0.00
August 23	70	54	0.00
August 24	76	55	0.00
August 25	68	57	0.05
August 26	64	55	0.08
August 27	68	58	0.05
August 28	75	57	0.00
August 29	82	58	0.00
August 30	74	60	0.00
August 31	71	58	0.00

September 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	78	56	0.00
September 2	69	58	0.18
September 3	73	55	0.00
September 4	68	55	0.00
September 5	72	54	0.00
September 6	75	57	0.00
September 7	72	59	0.01
September 8	80	60	0.00
September 9	80	61	0.22
September 10	71	59	0.21
September 11	76	60	0.00
September 12	68	60	0.27
September 13	73	59	0.00
September 14	73	60	0.00
September 15	73	55	0.00
September 16	74	54	0.00
September 17	68	56	0.17
September 18	65	55	0.00
September 19	68	49	0.00
September 20	70	49	0.00
September 21	76	55	0.00
September 22	85	57	0.00
September 23	85	56	0.00
September 24	73	54	0.00
September 25	68	58	0.00
September 26	69	55	0.31
September 27	57	54	1.13
September 28	63	55	0.00
September 29	67	55	0.00
September 30	66	54	0.08

October 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	63	51	0.11
October 2	58	49	0.03
October 3	60	52	0.01
October 4	66	54	0.02
October 5	71	47	0.00
October 6	75	53	0.00
October 7	71	55	0.00
October 8	66	54	0.00
October 9	62	51	0.20
October 10	63	59	0.50
October 11	67	57	0.00
October 12	58	52	0.10
October 13	61	52	0.03
October 14	68	53	0.01
October 15	68	53	0.00
October 16	65	52	0.00
October 17	67	55	0.28
October 18	74	63	0.13
October 19	67	60	0.91
October 20	64	56	0.18
October 21	62	49	0.00
October 22	62	44	0.02
October 23	63	53	0.75
October 24	57	48	0.20
October 25	59	46	0.00
October 26	56	43	0.00
October 27	55	40	0.00
October 28	52	49	0.13
October 29	56	49	0.46
October 30	58	48	0.48
October 31	54	40	0.15

November 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	51	45	0.18
November 2	52	44	0.00
November 3	54	42	0.00
November 4	56	40	0.00
November 5	53	46	0.08
November 6	58	46	0.26
November 7	54	45	0.35
November 8	46	42	0.31
November 9	42	32	0.17
November 10	41	30	0.03
November 11	45	35	0.00
November 12	46	30	0.00
November 13	49	36	0.00
November 14	51	37	0.00
November 15	55	36	0.00
November 16	47	39	0.00
November 17	46	39	0.33
November 18	48	39	0.00
November 19	45	33	0.00
November 20	44	37	0.24
November 21	47	37	0.00
November 22	48	32	0.00
November 23	49	39	0.20
November 24	54	40	0.14
November 25	52	43	0.00
November 26	48	40	0.02
November 27	52	43	0.32
November 28	55	45	0.43
November 29	55	47	0.00
November 30	50	47	0.00

December 1940 Seattle Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	52	45	0.03
December 2	56	50	0.00
December 3	57	47	0.11
December 4	52	44	0.02
December 5	53	46	0.29
December 6	52	46	0.00
December 7	53	47	0.07
December 8	54	42	0.39
December 9	48	38	0.00
December 10	46	35	0.00
December 11	45	35	0.00
December 12	49	34	0.00
December 13	45	32	0.00
December 14	44	30	0.00
December 15	48	30	0.00
December 16	57	37	0.00
December 17	53	46	0.04
December 18	50	44	0.12
December 19	52	46	1.15
December 20	54	49	0.10
December 21	63	48	0.01
December 22	61	43	0.03
December 23	51	45	0.21
December 24	53	46	0.32
December 25	49	45	0.18
December 26	49	45	0.43
December 27	47	44	0.00
December 28	49	45	0.19
December 29	47	42	0.01
December 30	42	39	0.34
December 31	45	38	0.00

Next Year >

Weather Station Details

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