Petaluma Weather in 1940

Historical record of Petaluma, California weather for the year 1940 based on NOAA data.

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1940 Petaluma Weather Extremes
Highest temperature	99 °F	July 5
Lowest temperature	24 °F	December 14
Highest daily low	62 °F	September 12
Lowest daily high	44 °F	January 19
Most daily precipitation	2.7 inches	March 30
Total annual precipitation	44.2 inches	-

What was the hottest temperature in Petaluma in 1940?

The highest temperature recorded in Petaluma, California in 1940 was 99 °F which happened on July 5.

Highest Temperatures: All-Time By Year

Highest Temperatures in Petaluma in 1940

Rank	Temperature	Date
1	99 °F	Jul 5
2	96 °F	Aug 10
3	94 °F	Aug 11
3	94 °F	Jul 24
5	92 °F	Oct 14
5	92 °F	Oct 12
5	92 °F	Jul 23
8	91 °F	Oct 11
9	90 °F	Oct 13
9	90 °F	Aug 12

What was the coldest temperature in Petaluma in 1940?

The lowest temperature recorded in Petaluma, California in 1940 was 24 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Petaluma in 1940

Rank	Temperature	Date
1	24 °F	December 14
1	24 °F	December 12
3	27 °F	December 11
3	27 °F	January 14
5	28 °F	December 13
5	28 °F	January 17
5	28 °F	January 13
8	29 °F	January 16
9	30 °F	November 23
9	30 °F	January 18
9	30 °F	January 15

January 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	61	53	0.83
January 2	69	54	0.98
January 3	59	47	0.24
January 4	61	49	0.51
January 5	56	36	0.13
January 6	55	33	0.13
January 7	56	45	0.97
January 8	60	50	0.96
January 9	61	50	0.44
January 10	55	49	0.79
January 11	59	51	0.68
January 12	58	43	0.00
January 13	58	28	0.00
January 14	57	27	0.00
January 15	58	30	0.00
January 16	60	29	0.00
January 17	56	28	0.00
January 18	48	30	0.00
January 19	44	35	0.00
January 20	48	35	0.00
January 21	49	35	0.00
January 22	48	34	0.00
January 23	53	39	0.11
January 24	55	42	0.00
January 25	54	47	2.31
January 26	66	52	0.41
January 27	67	47	0.00
January 28	65	52	0.00
January 29	68	50	0.00
January 30	62	41	0.02
January 31	54	41	0.47

February 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	65	48	0.01
February 2	62	43	0.12
February 3	65	50	1.06
February 4	63	48	0.04
February 5	63	52	0.01
February 6	61	53	0.26
February 7	61	41	0.00
February 8	66	44	0.00
February 9	66	37	0.00
February 10	62	44	0.01
February 11	64	41	0.00
February 12	54	34	0.00
February 13	55	40	0.95
February 14	59	43	1.40
February 15	59	35	0.00
February 16	59	45	0.00
February 17	59	48	1.00
February 18	60	42	0.00
February 19	62	33	0.00
February 20	63	33	0.00
February 21	60	44	0.00
February 22	62	47	0.00
February 23	60	50	0.02
February 24	62	48	0.00
February 25	64	55	0.20
February 26	64	53	1.03
February 27	64	56	2.58
February 28	65	55	0.88
February 29	62	44	0.62

March 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	63	41	0.00
March 2	67	45	0.00
March 3	74	46	0.00
March 4	69	45	0.00
March 5	70	43	0.00
March 6	74	40	0.00
March 7	73	45	0.00
March 8	67	51	0.00
March 9	60	40	0.00
March 10	58	36	0.00
March 11	61	33	0.00
March 12	64	32	0.00
March 13	67	34	0.00
March 14	60	35	0.00
March 15	66	45	0.11
March 16	67	51	0.07
March 17	75	40	0.00
March 18	69	42	0.00
March 19	70	48	0.00
March 20	72	52	0.00
March 21	68	46	0.00
March 22	70	39	0.00
March 23	68	49	0.00
March 24	64	55	0.05
March 25	63	49	0.05
March 26	60	53	1.05
March 27	64	52	0.37
March 28	66	48	0.41
March 29	62	54	0.55
March 30	62	49	2.69
March 31	64	46	0.11

April 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	66	43	0.00
April 2	62	42	0.00
April 3	64	47	0.27
April 4	63	41	0.00
April 5	65	41	0.00
April 6	64	42	0.00
April 7	66	50	0.08
April 8	67	52	0.24
April 9	67	46	0.00
April 10	76	43	0.00
April 11	82	45	0.00
April 12	85	48	0.00
April 13	86	49	0.00
April 14	81	47	0.00
April 15	84	46	0.00
April 16	72	47	0.00
April 17	82	46	0.00
April 18	76	46	0.00
April 19	75	49	0.00
April 20	76	39	0.00
April 21	73	40	0.00
April 22	64	49	0.00
April 23	65	40	0.00
April 24	63	43	0.00
April 25	63	45	0.45
April 26	64	46	1.10
April 27	66	40	0.00
April 28	65	44	0.00
April 29	68	48	0.00
April 30	73	47	0.00

May 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	72	42	0.00
May 2	67	51	0.04
May 3	67	41	0.00
May 4	65	49	0.25
May 5	69	44	0.00
May 6	70	42	0.00
May 7	73	43	0.00
May 8	79	44	0.00
May 9	77	50	0.00
May 10	74	47	0.00
May 11	75	49	0.00
May 12	76	49	0.00
May 13	82	43	0.00
May 14	77	47	0.00
May 15	76	47	0.00
May 16	73	47	0.00
May 17	72	51	0.00
May 18	71	52	0.00
May 19	76	50	0.00
May 20	78	45	0.00
May 21	72	51	0.00
May 22	72	54	0.00
May 23	68	52	0.00
May 24	70	50	0.00
May 25	72	51	0.00
May 26	72	44	0.00
May 27	65	43	0.00
May 28	63	50	0.00
May 29	74	42	0.00
May 30	69	55	0.93
May 31	74	53	0.00

June 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	70	57	0.04
June 2	71	54	0.00
June 3	78	50	0.00
June 4	75	n/a	0.00
June 5	82	46	0.00
June 6	83	47	0.00
June 7	85	50	0.00
June 8	85	50	0.00
June 9	76	49	0.00
June 10	76	48	0.00
June 11	74	51	0.00
June 12	73	51	0.00
June 13	89	47	0.00
June 14	86	48	0.00
June 15	75	52	0.00
June 16	70	57	0.00
June 17	71	57	0.00
June 18	70	53	0.00
June 19	74	54	0.00
June 20	86	53	0.00
June 21	81	48	0.00
June 22	82	45	0.00
June 23	78	48	0.00
June 24	71	52	0.00
June 25	74	50	0.00
June 26	71	50	0.00
June 27	89	51	0.00
June 28	79	54	0.00
June 29	76	56	0.00
June 30	76	54	0.00

July 1940 Petaluma Weather

Day	High (°F)	Low (°F)
July 1	72	54
July 2	83	48
July 3	82	51
July 4	88	46
July 5	99	48
July 6	89	51
July 7	78	49
July 8	73	48
July 9	77	48
July 10	76	47
July 11	72	53
July 12	75	55
July 13	80	51
July 14	82	54
July 15	84	54
July 16	74	56
July 17	72	54
July 18	72	52
July 19	73	52
July 20	74	48
July 21	82	47
July 22	82	54
July 23	92	49
July 24	94	51
July 25	85	53
July 26	79	52
July 27	81	54
July 28	80	53
July 29	79	52
July 30	77	49
July 31	82	48

August 1940 Petaluma Weather

Day	High (°F)	Low (°F)
August 1	79	50
August 2	89	50
August 3	83	52
August 4	81	51
August 5	82	52
August 6	78	54
August 7	77	52
August 8	77	52
August 9	87	53
August 10	96	50
August 11	94	52
August 12	90	55
August 13	87	52
August 14	77	49
August 15	77	50
August 16	82	58
August 17	81	51
August 18	77	55
August 19	78	53
August 20	81	51
August 21	78	49
August 22	78	55
August 23	76	55
August 24	78	55
August 25	73	54
August 26	72	55
August 27	82	53
August 28	83	52
August 29	81	53
August 30	82	50
August 31	83	54

September 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	73	51	0.00
September 2	71	50	0.00
September 3	73	53	0.00
September 4	73	52	0.00
September 5	77	54	0.00
September 6	78	55	0.08
September 7	77	54	0.00
September 8	80	52	0.00
September 9	78	54	0.00
September 10	79	53	0.00
September 11	79	57	0.00
September 12	77	62	0.00
September 13	81	59	0.00
September 14	78	58	0.00
September 15	79	55	0.00
September 16	82	60	0.00
September 17	77	52	0.00
September 18	78	50	0.00
September 19	81	47	0.00
September 20	88	45	0.00
September 21	81	54	0.00
September 22	72	54	0.00
September 23	73	56	0.00
September 24	78	52	0.00
September 25	86	52	0.00
September 26	75	57	0.00
September 27	77	46	0.00
September 28	80	52	0.00
September 29	85	50	0.00
September 30	87	47	0.00

October 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	77	47	0.00
October 2	70	51	0.00
October 3	73	41	0.00
October 4	76	45	0.00
October 5	74	43	0.00
October 6	82	53	0.00
October 7	74	47	0.00
October 8	74	53	0.00
October 9	80	45	0.00
October 10	86	47	0.00
October 11	91	47	0.00
October 12	92	46	0.00
October 13	90	45	0.00
October 14	92	45	0.00
October 15	87	46	0.00
October 16	75	51	0.00
October 17	85	60	0.00
October 18	89	51	0.00
October 19	85	52	0.00
October 20	82	54	0.00
October 21	76	51	0.00
October 22	68	52	0.00
October 23	67	49	0.00
October 24	67	55	0.87
October 25	65	49	0.00
October 26	63	42	0.00
October 27	64	37	0.00
October 28	61	38	0.00
October 29	66	53	0.43
October 30	69	42	0.00
October 31	70	52	0.00

November 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	69	53	0.00
November 2	64	49	0.23
November 3	64	40	0.00
November 4	63	36	0.00
November 5	57	43	0.14
November 6	55	51	0.99
November 7	68	52	0.43
November 8	64	41	0.00
November 9	61	44	0.10
November 10	63	39	0.00
November 11	64	35	0.00
November 12	63	39	0.00
November 13	67	45	0.00
November 14	75	39	0.00
November 15	75	36	0.00
November 16	69	33	0.00
November 17	65	47	0.02
November 18	67	37	0.00
November 19	70	41	0.00
November 20	62	35	0.00
November 21	62	40	0.00
November 22	65	41	0.00
November 23	62	30	0.00
November 24	64	35	0.00
November 25	73	34	0.00
November 26	67	32	0.00
November 27	66	35	0.00
November 28	68	36	0.00
November 29	61	38	0.00
November 30	67	37	0.00

December 1940 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	69	42	0.00
December 2	71	38	0.00
December 3	70	36	0.00
December 4	72	35	0.00
December 5	68	41	0.00
December 6	65	43	0.00
December 7	67	36	0.00
December 8	66	34	0.00
December 9	67	34	0.00
December 10	69	31	0.00
December 11	60	27	0.00
December 12	62	24	0.00
December 13	65	28	0.00
December 14	55	24	0.00
December 15	53	40	0.22
December 16	54	46	0.34
December 17	65	47	0.00
December 18	65	52	2.50
December 19	58	44	0.03
December 20	60	53	0.26
December 21	61	53	2.00
December 22	60	52	0.66
December 23	63	43	0.70
December 24	61	48	0.73
December 25	61	56	1.34
December 26	56	50	2.04
December 27	57	49	0.68
December 28	56	49	0.23
December 29	57	49	0.10
December 30	58	46	0.03
December 31	56	32	0.00

Next Year >

Weather Station Details

Years	Station	Coordinates
1893–2024	Petaluma Airport	location