Petaluma Weather in 1978

1978 Petaluma Weather Extremes
Highest temperature	100 °F	August 6
Lowest temperature	21 °F	December 31
Highest daily low	61 °F	September 5
Lowest daily high	42 °F	December 27
Most daily precipitation	2.4 inches	January 5
Most daily snow	none	-
Total annual precipitation	27.9 inches	-
Total annual snow	none	-

Rank	Temperature	Date
1	100 °F	Aug 6
2	99 °F	Sep 24
2	99 °F	Sep 23
4	98 °F	Sep 29
5	97 °F	Aug 5
6	96 °F	Oct 2
7	95 °F	Oct 13
7	95 °F	Sep 30
7	95 °F	Jul 17
10	94 °F	Oct 12
10	94 °F	Sep 25
10	94 °F	Sep 1

Rank	Temperature	Date
1	21 °F	December 31
2	24 °F	December 8
3	26 °F	December 21
3	26 °F	December 20
3	26 °F	December 16
6	27 °F	December 30
6	27 °F	December 22
6	27 °F	December 17
6	27 °F	December 9
10	28 °F	December 23
10	28 °F	November 12

January 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	49	38	0.08
January 2	52	46	0.34
January 3	57	47	0.00
January 4	57	49	1.50
January 5	57	50	2.38
January 6	61	45	0.00
January 7	59	44	0.00
January 8	58	45	1.59
January 9	62	52	0.01
January 10	61	44	0.00
January 11	62	n/a	0.08
January 12	55	50	0.36
January 13	56	51	1.15
January 14	57	52	1.51
January 15	58	48	1.26
January 16	60	51	1.40
January 17	60	49	0.10
January 18	54	47	0.75
January 19	60	48	0.07
January 20	61	40	0.00
January 21	59	40	0.00
January 22	60	38	0.00
January 23	62	39	0.00
January 24	60	39	0.00
January 25	59	34	0.00
January 26	62	37	0.00
January 27	59	37	0.00
January 28	62	39	0.00
January 29	51	39	0.00
January 30	48	42	0.00
January 31	55	n/a	0.00

February 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	54	44	0.10
February 2	62	45	0.00
February 3	57	43	0.00
February 4	55	43	0.00
February 5	61	50	0.78
February 6	64	51	0.97
February 7	62	50	1.14
February 8	57	45	0.24
February 9	55	42	0.00
February 10	56	40	0.00
February 11	57	36	0.00
February 12	58	37	0.33
February 13	57	44	0.86
February 14	60	38	0.15
February 15	60	38	0.02
February 16	53	41	0.00
February 17	57	44	0.00
February 18	68	46	0.00
February 19	65	47	0.00
February 20	68	47	0.00
February 21	72	47	0.00
February 22	71	45	0.00
February 23	67	44	0.00
February 24	58	42	0.00
February 25	60	51	0.00
February 26	63	48	0.03
February 27	60	37	0.00
February 28	67	38	0.00

March 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	60	41	0.05
March 2	58	52	0.72
March 3	60	50	0.61
March 4	63	53	0.86
March 5	63	53	0.20
March 6	66	44	0.04
March 7	68	45	0.00
March 8	57	50	0.24
March 9	62	50	0.71
March 10	62	43	0.10
March 11	62	48	0.00
March 12	64	44	0.00
March 13	62	41	0.00
March 14	68	41	0.00
March 15	71	39	0.00
March 16	75	42	0.00
March 17	77	45	0.00
March 18	72	49	0.00
March 19	74	50	0.00
March 20	70	48	0.00
March 21	68	n/a	0.25
March 22	65	54	0.02
March 23	65	42	0.12
March 24	68	41	0.00
March 25	73	44	0.00
March 26	70	47	0.00
March 27	69	50	0.00
March 28	65	50	0.00
March 29	60	50	0.00
March 30	68	51	0.02
March 31	58	54	0.30

April 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	60	48	0.42
April 2	63	41	0.14
April 3	62	44	0.00
April 4	60	39	0.61
April 5	59	40	0.00
April 6	57	47	0.58
April 7	62	41	0.05
April 8	77	44	0.00
April 9	83	46	0.00
April 10	78	45	0.00
April 11	74	53	0.00
April 12	66	46	0.00
April 13	66	46	0.00
April 14	63	42	0.00
April 15	52	49	0.52
April 16	61	45	0.53
April 17	66	43	0.07
April 18	67	38	0.00
April 19	65	45	0.00
April 20	61	45	0.19
April 21	64	37	0.00
April 22	66	39	0.00
April 23	71	42	0.00
April 24	60	48	0.00
April 25	66	47	0.44
April 26	68	48	0.12
April 27	70	46	0.00
April 28	68	47	0.00
April 29	71	49	0.00
April 30	64	50	0.01

May 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	76	47	0.02
May 2	79	48	0.00
May 3	74	52	0.00
May 4	72	51	0.00
May 5	74	49	0.00
May 6	75	49	0.00
May 7	84	48	0.00
May 8	83	46	0.00
May 9	64	48	0.00
May 10	66	48	0.00
May 11	67	46	0.00
May 12	80	47	0.00
May 13	83	50	0.00
May 14	70	52	0.00
May 15	65	52	0.07
May 16	78	42	0.00
May 17	89	50	0.00
May 18	90	43	0.00
May 19	92	51	0.00
May 20	69	51	0.00
May 21	63	51	0.00
May 22	70	47	0.00
May 23	65	45	0.00
May 24	64	43	0.00
May 25	67	43	0.00
May 26	69	45	0.00
May 27	81	48	0.00
May 28	85	52	0.00
May 29	89	50	0.00
May 30	92	49	0.00
May 31	82	52	0.00

June 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	72	54	0.00
June 2	71	55	0.00
June 3	71	53	0.00
June 4	82	51	0.00
June 5	85	51	0.00
June 6	93	49	0.00
June 7	84	49	0.00
June 8	87	48	0.00
June 9	74	50	0.00
June 10	73	53	0.00
June 11	71	54	0.00
June 12	73	52	0.00
June 13	73	52	0.00
June 14	77	47	0.00
June 15	77	47	0.00
June 16	86	47	0.00
June 17	88	48	0.00
June 18	68	51	0.00
June 19	77	48	0.00
June 20	74	48	0.00
June 21	75	51	0.00
June 22	70	50	0.00
June 23	69	51	0.00
June 24	73	49	0.00
June 25	79	52	0.00
June 26	81	50	0.00
June 27	73	53	0.00
June 28	69	58	0.00
June 29	74	58	0.00
June 30	72	53	0.00

July 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	71	52	0.00
July 2	73	49	0.00
July 3	81	50	0.00
July 4	83	49	0.00
July 5	85	52	0.00
July 6	85	51	0.00
July 7	81	53	0.00
July 8	89	50	0.00
July 9	86	53	0.00
July 10	75	51	0.00
July 11	74	51	0.00
July 12	78	52	0.00
July 13	91	50	0.00
July 14	90	52	0.00
July 15	77	52	0.00
July 16	92	50	0.00
July 17	95	53	0.00
July 18	93	50	0.00
July 19	79	52	0.00
July 20	79	50	0.00
July 21	91	49	0.00
July 22	81	49	0.00
July 23	78	52	0.00
July 24	84	51	0.00
July 25	77	52	0.00
July 26	74	55	0.00
July 27	79	52	0.00
July 28	79	53	0.00
July 29	79	52	0.00
July 30	88	51	0.00
July 31	92	51	0.00

August 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	84	50	0.00
August 2	80	50	0.00
August 3	80	50	0.00
August 4	86	50	0.00
August 5	97	50	0.00
August 6	100	55	0.00
August 7	87	57	0.00
August 8	90	53	0.00
August 9	88	53	0.00
August 10	82	53	0.00
August 11	77	48	0.00
August 12	74	54	0.00
August 13	82	52	0.00
August 14	90	50	0.00
August 15	85	52	0.00
August 16	76	53	0.00
August 17	86	49	0.00
August 18	93	51	0.00
August 19	88	49	0.00
August 20	81	50	0.00
August 21	73	52	0.00
August 22	77	49	0.00
August 23	74	49	0.00
August 24	80	51	0.00
August 25	79	57	0.00
August 26	72	54	0.00
August 27	84	50	0.00
August 28	88	52	0.00
August 29	89	53	0.00
August 30	78	52	0.00
August 31	85	50	0.00

September 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	94	54	0.00
September 2	89	55	0.00
September 3	79	56	0.00
September 4	82	57	0.00
September 5	68	61	0.04
September 6	73	53	0.00
September 7	74	49	0.00
September 8	80	47	0.00
September 9	66	50	0.42
September 10	74	55	0.00
September 11	81	55	0.00
September 12	89	53	0.00
September 13	82	52	0.00
September 14	84	54	0.00
September 15	86	52	0.00
September 16	87	52	0.00
September 17	77	53	0.00
September 18	75	49	0.00
September 19	81	48	0.00
September 20	84	43	0.00
September 21	80	43	0.00
September 22	92	45	0.00
September 23	99	46	0.00
September 24	99	46	0.00
September 25	94	55	0.00
September 26	74	53	0.00
September 27	82	51	0.00
September 28	93	49	0.00
September 29	98	50	0.00
September 30	95	50	0.00

October 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	93	48	0.00
October 2	96	49	0.00
October 3	91	51	0.00
October 4	81	47	0.00
October 5	72	50	0.00
October 6	70	51	0.00
October 7	83	44	0.00
October 8	86	42	0.00
October 9	81	45	0.00
October 10	90	45	0.00
October 11	88	44	0.00
October 12	94	47	0.00
October 13	95	49	0.00
October 14	83	51	0.00
October 15	74	51	0.00
October 16	75	53	0.00
October 17	83	50	0.00
October 18	66	51	0.00
October 19	58	52	0.00
October 20	68	52	0.00
October 21	74	52	0.00
October 22	86	44	0.00
October 23	92	42	0.00
October 24	82	41	0.00
October 25	71	43	0.00
October 26	70	49	0.00
October 27	72	49	0.00
October 28	70	43	0.00
October 29	73	43	0.00
October 30	71	44	0.00
October 31	70	42	0.00

November 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	69	38	0.00
November 2	69	40	0.00
November 3	75	36	0.00
November 4	78	38	0.00
November 5	79	43	0.00
November 6	79	40	0.00
November 7	78	41	0.00
November 8	85	41	0.00
November 9	69	43	0.00
November 10	65	n/a	0.00
November 11	58	34	0.00
November 12	54	28	0.27
November 13	52	35	0.00
November 14	63	29	0.00
November 15	57	30	0.00
November 16	55	32	0.00
November 17	67	36	0.00
November 18	54	38	0.22
November 19	57	47	0.60
November 20	59	49	0.04
November 21	60	48	0.14
November 22	55	45	0.12
November 23	65	38	0.00
November 24	64	35	0.00
November 25	59	33	0.00
November 26	64	33	0.00
November 27	62	34	0.00
November 28	61	36	0.00
November 29	67	40	0.00
November 30	65	43	0.12

December 1978 Petaluma Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	63	44	0.00
December 2	64	41	0.00
December 3	65	32	0.00
December 4	64	32	0.00
December 5	59	35	0.00
December 6	54	29	0.00
December 7	52	35	0.00
December 8	53	24	0.00
December 9	52	27	0.00
December 10	58	30	0.00
December 11	62	32	0.00
December 12	60	36	0.00
December 13	64	35	0.00
December 14	67	32	0.00
December 15	62	30	0.00
December 16	58	26	0.00
December 17	52	27	0.69
December 18	52	36	0.00
December 19	55	30	0.00
December 20	53	26	0.00
December 21	56	26	0.00
December 22	56	27	0.00
December 23	42	28	0.00
December 24	47	31	0.00
December 25	44	35	0.00
December 26	48	34	0.00
December 27	42	36	0.04
December 28	51	38	0.00
December 29	52	37	0.00
December 30	46	27	0.00
December 31	n/a	21	0.00