San Francisco Weather in 1978

Historical record of San Francisco, California weather for the year 1978 based on NOAA data.

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1978 San Francisco Weather Extremes
Highest temperature	92 °F	October 13
Lowest temperature	38 °F	December 30
Highest daily low	69 °F	September 24
Lowest daily high	46 °F	December 26
Most daily precipitation	1.8 inches	March 8
Total annual precipitation	23.2 inches	-

What was the hottest temperature in San Francisco in 1978?

The highest temperature recorded in San Francisco, California in 1978 was 92 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Francisco in 1978

Rank	Temperature	Date
1	92 °F	Oct 13
1	92 °F	Sep 24
3	91 °F	May 30
4	90 °F	Oct 2
4	90 °F	Sep 29
4	90 °F	Sep 25
4	90 °F	Sep 23
8	87 °F	Oct 12
9	86 °F	Oct 11
9	86 °F	May 18

What was the coldest temperature in San Francisco in 1978?

The lowest temperature recorded in San Francisco, California in 1978 was 38 °F which happened on Dec 30.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Francisco in 1978

Rank	Temperature	Date
1	38 °F	December 30
2	40 °F	December 26
2	40 °F	December 23
4	41 °F	December 31
4	41 °F	December 29
4	41 °F	December 25
4	41 °F	December 24
4	41 °F	December 20
4	41 °F	December 8
10	42 °F	December 27
10	42 °F	December 7

January 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	53	50	0.00
January 2	57	50	0.20
January 3	56	52	0.21
January 4	60	52	0.36
January 5	60	53	0.76
January 6	60	54	0.01
January 7	62	51	0.00
January 8	62	54	0.01
January 9	64	55	0.76
January 10	64	54	0.00
January 11	62	53	0.00
January 12	57	54	0.45
January 13	61	55	0.78
January 14	58	50	1.00
January 15	59	52	0.59
January 16	62	53	0.84
January 17	58	53	0.21
January 18	56	52	0.67
January 19	58	52	0.09
January 20	61	51	0.00
January 21	57	53	0.00
January 22	59	49	0.00
January 23	60	51	0.00
January 24	61	48	0.00
January 25	57	48	0.00
January 26	60	48	0.00
January 27	60	48	0.00
January 28	60	50	0.00
January 29	55	47	0.00
January 30	49	45	0.00
January 31	56	47	0.00

February 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	55	48	0.02
February 2	63	53	0.00
February 3	61	51	0.00
February 4	59	53	0.00
February 5	59	50	0.62
February 6	63	53	0.55
February 7	62	53	0.91
February 8	56	51	0.58
February 9	54	50	0.04
February 10	54	48	0.00
February 11	55	47	0.00
February 12	56	48	0.95
February 13	58	48	0.41
February 14	57	49	0.00
February 15	59	50	0.01
February 16	54	49	0.01
February 17	60	51	0.00
February 18	64	52	0.00
February 19	65	51	0.00
February 20	64	50	0.00
February 21	67	51	0.00
February 22	70	53	0.00
February 23	64	51	0.00
February 24	55	53	0.00
February 25	59	52	0.04
February 26	57	51	0.00
February 27	60	49	0.00
February 28	63	52	0.00

March 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	62	54	0.30
March 2	60	53	1.14
March 3	61	54	0.43
March 4	62	54	0.67
March 5	58	53	0.56
March 6	64	53	0.00
March 7	67	54	0.00
March 8	59	53	1.77
March 9	61	53	0.07
March 10	59	52	0.00
March 11	57	51	0.02
March 12	60	50	0.00
March 13	62	50	0.00
March 14	64	52	0.00
March 15	69	52	0.00
March 16	74	56	0.00
March 17	76	60	0.00
March 18	77	62	0.00
March 19	67	57	0.00
March 20	66	55	0.00
March 21	62	57	0.30
March 22	65	56	0.00
March 23	63	54	0.02
March 24	64	53	0.00
March 25	71	53	0.00
March 26	67	54	0.00
March 27	65	53	0.00
March 28	59	52	0.00
March 29	59	51	0.02
March 30	64	56	0.00
March 31	60	54	0.60

April 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	58	51	0.11
April 2	58	51	0.01
April 3	60	50	0.59
April 4	56	49	0.12
April 5	59	51	0.00
April 6	55	49	0.79
April 7	57	46	0.11
April 8	72	52	0.00
April 9	78	55	0.00
April 10	69	53	0.00
April 11	66	53	0.00
April 12	64	53	0.00
April 13	59	53	0.00
April 14	60	52	0.00
April 15	54	48	1.15
April 16	56	47	0.20
April 17	61	50	0.02
April 18	61	51	0.00
April 19	64	53	0.00
April 20	57	50	0.05
April 21	59	49	0.00
April 22	61	50	0.00
April 23	67	52	0.00
April 24	59	54	0.47
April 25	64	53	0.56
April 26	62	52	0.03
April 27	63	53	0.00
April 28	62	53	0.00
April 29	61	52	0.00
April 30	60	51	0.00

May 1978 San Francisco Weather

Day	High (°F)	Low (°F)
May 1	66	52
May 2	72	53
May 3	66	53
May 4	65	52
May 5	69	52
May 6	72	55
May 7	80	54
May 8	76	51
May 9	57	49
May 10	57	50
May 11	61	50
May 12	77	54
May 13	78	56
May 14	66	53
May 15	61	53
May 16	69	53
May 17	81	59
May 18	86	56
May 19	85	53
May 20	58	51
May 21	59	52
May 22	62	50
May 23	56	50
May 24	58	49
May 25	60	50
May 26	61	51
May 27	69	52
May 28	67	53
May 29	76	55
May 30	91	56
May 31	72	55

June 1978 San Francisco Weather

Day	High (°F)	Low (°F)
June 1	64	55
June 2	63	54
June 3	61	52
June 4	63	51
June 5	63	51
June 6	70	50
June 7	66	51
June 8	67	52
June 9	64	52
June 10	62	53
June 11	71	54
June 12	65	54
June 13	63	53
June 14	64	52
June 15	66	52
June 16	72	52
June 17	62	52
June 18	63	53
June 19	62	52
June 20	60	53
June 21	63	53
June 22	60	54
June 23	63	54
June 24	62	53
June 25	69	53
June 26	65	52
June 27	65	56
June 28	67	58
June 29	67	57
June 30	66	55

July 1978 San Francisco Weather

Day	High (°F)	Low (°F)
July 1	66	56
July 2	64	55
July 3	69	53
July 4	67	53
July 5	67	54
July 6	62	53
July 7	63	52
July 8	67	52
July 9	61	53
July 10	59	52
July 11	56	52
July 12	61	52
July 13	73	52
July 14	65	51
July 15	64	52
July 16	74	52
July 17	74	55
July 18	63	53
July 19	60	52
July 20	59	51
July 21	68	50
July 22	61	53
July 23	60	53
July 24	63	52
July 25	64	54
July 26	65	56
July 27	60	53
July 28	59	52
July 29	59	52
July 30	67	52
July 31	66	53

August 1978 San Francisco Weather

Day	High (°F)	Low (°F)
August 1	60	53
August 2	59	51
August 3	60	50
August 4	66	52
August 5	72	54
August 6	81	55
August 7	68	54
August 8	63	54
August 9	62	54
August 10	59	53
August 11	60	55
August 12	66	56
August 13	66	56
August 14	73	54
August 15	63	54
August 16	63	55
August 17	72	55
August 18	77	57
August 19	67	56
August 20	66	57
August 21	61	55
August 22	65	54
August 23	65	55
August 24	70	59
August 25	70	58
August 26	64	55
August 27	69	54
August 28	74	57
August 29	63	55
August 30	65	55
August 31	69	55

September 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	78	58	0.00
September 2	63	57	0.00
September 3	70	59	0.00
September 4	74	59	0.00
September 5	69	58	0.00
September 6	66	57	0.00
September 7	65	57	0.00
September 8	70	56	0.00
September 9	67	59	0.11
September 10	69	60	0.08
September 11	73	59	0.00
September 12	78	59	0.00
September 13	67	57	0.00
September 14	73	57	0.00
September 15	70	57	0.00
September 16	69	56	0.00
September 17	66	56	0.00
September 18	65	54	0.00
September 19	76	60	0.00
September 20	80	57	0.00
September 21	73	54	0.00
September 22	80	54	0.00
September 23	90	64	0.00
September 24	92	69	0.00
September 25	90	54	0.00
September 26	67	54	0.00
September 27	67	55	0.00
September 28	78	57	0.00
September 29	90	56	0.00
September 30	72	53	0.00

October 1978 San Francisco Weather

Day	High (°F)	Low (°F)
October 1	77	53
October 2	90	58
October 3	70	52
October 4	61	51
October 5	58	52
October 6	64	54
October 7	71	53
October 8	61	52
October 9	62	54
October 10	77	55
October 11	86	55
October 12	87	61
October 13	92	65
October 14	70	56
October 15	62	56
October 16	61	56
October 17	68	54
October 18	59	54
October 19	59	53
October 20	62	56
October 21	65	55
October 22	75	55
October 23	84	57
October 24	75	56
October 25	64	55
October 26	63	53
October 27	59	52
October 28	62	52
October 29	66	54
October 30	68	50
October 31	64	56

November 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	65	53	0.00
November 2	60	49	0.00
November 3	70	52	0.00
November 4	72	53	0.00
November 5	71	54	0.00
November 6	76	54	0.00
November 7	77	57	0.00
November 8	78	54	0.00
November 9	63	52	0.00
November 10	60	50	0.00
November 11	53	46	0.25
November 12	53	48	0.07
November 13	51	47	0.00
November 14	58	45	0.00
November 15	59	46	0.00
November 16	56	50	0.00
November 17	61	48	0.00
November 18	58	50	0.00
November 19	58	50	0.09
November 20	58	52	0.35
November 21	58	49	0.27
November 22	52	49	0.64
November 23	61	50	0.00
November 24	60	50	0.00
November 25	61	48	0.00
November 26	60	48	0.00
November 27	60	48	0.00
November 28	60	49	0.00
November 29	62	51	0.00
November 30	60	52	0.00

December 1978 San Francisco Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	60	52	0.16
December 2	58	50	0.00
December 3	64	48	0.00
December 4	62	48	0.00
December 5	56	49	0.00
December 6	51	44	0.00
December 7	51	42	0.00
December 8	52	41	0.00
December 9	52	43	0.00
December 10	57	44	0.00
December 11	59	47	0.00
December 12	57	49	0.00
December 13	63	51	0.00
December 14	63	47	0.00
December 15	62	47	0.00
December 16	60	47	n/a
December 17	53	48	n/a
December 18	49	45	n/a
December 19	54	43	0.00
December 20	51	41	0.00
December 21	56	43	0.00
December 22	54	43	0.00
December 23	47	40	0.00
December 24	51	41	0.00
December 25	51	41	0.00
December 26	46	40	0.00
December 27	48	42	0.00
December 28	50	44	0.00
December 29	49	41	0.00
December 30	52	38	0.00
December 31	56	41	0.00

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Weather Station Details

Years	Station	Coordinates
1921–2024	Downtown San Francisco	location