San Luis Obispo Weather in 1990

Historical record of San Luis Obispo, California weather for the year 1990 based on NOAA data.

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1990 San Luis Obispo Weather Extremes
Highest temperature	100 °F	June 9
Lowest temperature	17 °F	December 23
Highest daily low	64 °F	November 10
Lowest daily high	43 °F	December 22
Most daily precipitation	1.8 inches	February 17

What was the hottest temperature in San Luis Obispo in 1990?

The highest temperature recorded in San Luis Obispo, California in 1990 was 100 °F which happened on June 9.

Highest Temperatures: All-Time By Year

Highest Temperatures in San Luis Obispo in 1990

Rank	Temperature	Date
1	100 °F	Jun 9
2	97 °F	Aug 7
3	95 °F	Sep 10
4	94 °F	Sep 13
4	94 °F	Aug 8
6	92 °F	Jul 14
6	92 °F	Jul 13
8	90 °F	Nov 11
8	90 °F	Sep 9
8	90 °F	Aug 29

What was the coldest temperature in San Luis Obispo in 1990?

The lowest temperature recorded in San Luis Obispo, California in 1990 was 17 °F which happened on Dec 23.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in San Luis Obispo in 1990

Rank	Temperature	Date
1	17 °F	December 23
2	26 °F	December 24
3	27 °F	December 22
4	28 °F	February 16
4	28 °F	February 15
6	30 °F	December 21
7	33 °F	December 28
7	33 °F	December 27
7	33 °F	December 26
7	33 °F	December 20
7	33 °F	December 18
7	33 °F	December 17
7	33 °F	December 16

January 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	74	38	n/a
January 2	60	43	n/a
January 3	57	39	n/a
January 4	60	43	n/a
January 5	63	42	n/a
January 6	64	45	n/a
January 7	65	45	n/a
January 8	63	43	n/a
January 9	73	48	n/a
January 10	80	43	n/a
January 11	85	45	n/a
January 12	67	45	n/a
January 13	64	52	n/a
January 14	60	47	n/a
January 15	60	47	n/a
January 16	60	46	n/a
January 17	54	34	n/a
January 18	53	39	n/a
January 19	60	34	n/a
January 20	60	34	n/a
January 21	63	45	n/a
January 22	68	42	n/a
January 23	69	45	n/a
January 24	70	51	n/a
January 25	70	42	n/a
January 26	79	38	n/a
January 27	63	43	n/a
January 28	65	43	n/a
January 29	70	45	n/a
January 30	70	45	n/a
January 31	55	39	n/a

February 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	58	41	0.20
February 2	57	41	0.00
February 3	61	38	0.00
February 4	62	37	0.77
February 5	57	37	0.00
February 6	60	40	0.00
February 7	56	36	0.01
February 8	56	38	0.00
February 9	58	39	0.00
February 10	63	46	0.00
February 11	70	44	0.00
February 12	77	42	0.00
February 13	59	41	0.00
February 14	56	35	0.00
February 15	52	28	0.00
February 16	56	28	0.00
February 17	52	40	1.75
February 18	54	37	0.22
February 19	52	36	0.03
February 20	59	35	0.00
February 21	64	43	0.00
February 22	67	43	0.00
February 23	80	42	0.00
February 24	78	45	0.00
February 25	78	47	0.00
February 26	78	47	0.00
February 27	64	48	0.00
February 28	61	48	0.00

March 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	57	48	0.00
March 2	57	45	0.00
March 3	63	47	0.19
March 4	60	48	0.00
March 5	59	36	0.17
March 6	60	36	0.00
March 7	69	40	0.00
March 8	69	41	0.00
March 9	65	40	0.00
March 10	67	41	0.00
March 11	57	38	0.31
March 12	55	35	0.00
March 13	55	35	0.03
March 14	62	39	0.00
March 15	65	44	0.00
March 16	72	47	0.00
March 17	75	43	0.00
March 18	72	45	0.00
March 19	77	45	0.00
March 20	72	48	0.00
March 21	84	46	0.00
March 22	80	49	0.00
March 23	79	49	0.00
March 24	74	46	0.00
March 25	64	46	0.00
March 26	64	44	0.00
March 27	71	n/a	0.00
March 28	62	48	0.00
March 29	57	48	0.00
March 30	63	48	0.00
March 31	66	42	0.00

April 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	64	42	0.00
April 2	59	47	0.00
April 3	69	43	0.00
April 4	80	45	0.00
April 5	75	45	0.00
April 6	65	45	0.00
April 7	66	52	0.00
April 8	54	45	0.01
April 9	68	43	0.00
April 10	80	51	0.00
April 11	80	48	0.00
April 12	89	54	0.00
April 13	n/a	n/a	0.00
April 14	81	54	0.00
April 15	64	53	0.00
April 16	70	53	0.00
April 17	63	52	0.18
April 18	70	53	0.00
April 19	70	52	0.00
April 20	64	50	0.00
April 21	67	48	0.00
April 22	65	48	0.00
April 23	70	50	0.10
April 24	65	45	0.19
April 25	65	45	0.00
April 26	78	50	0.00
April 27	84	52	0.00
April 28	84	50	0.00
April 29	75	45	0.00
April 30	70	38	0.00

May 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	74	34	0.00
May 2	80	34	0.00
May 3	75	43	0.00
May 4	73	48	0.00
May 5	85	48	0.00
May 6	86	48	0.00
May 7	74	44	0.00
May 8	78	46	0.00
May 9	72	51	0.00
May 10	64	47	0.00
May 11	68	45	0.00
May 12	65	48	0.00
May 13	65	42	0.00
May 14	68	41	0.00
May 15	68	41	0.00
May 16	64	45	0.00
May 17	70	46	0.00
May 18	65	44	0.00
May 19	65	43	0.00
May 20	69	46	0.00
May 21	70	50	0.00
May 22	71	48	0.00
May 23	75	49	0.00
May 24	70	47	0.23
May 25	69	43	0.00
May 26	73	48	0.00
May 27	73	47	0.00
May 28	63	54	1.16
May 29	64	46	0.03
May 30	57	46	0.00
May 31	68	49	0.00

June 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	57	48	0.00
June 2	76	44	0.00
June 3	86	49	0.00
June 4	85	54	0.00
June 5	82	51	0.00
June 6	84	50	0.00
June 7	81	52	0.00
June 8	88	58	0.00
June 9	100	57	0.00
June 10	84	55	0.00
June 11	80	47	0.00
June 12	70	45	0.00
June 13	65	45	0.00
June 14	68	48	0.00
June 15	n/a	n/a	n/a
June 16	68	53	0.00
June 17	72	48	0.00
June 18	73	52	0.00
June 19	69	48	0.00
June 20	78	49	0.00
June 21	87	49	0.00
June 22	79	50	0.00
June 23	76	50	0.00
June 24	75	51	0.00
June 25	78	50	0.00
June 26	75	52	0.00
June 27	86	52	0.00
June 28	86	47	0.00
June 29	85	45	0.00
June 30	82	45	0.00

July 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)
July 1	n/a	n/a
July 2	81	45
July 3	85	49
July 4	78	48
July 5	73	48
July 6	80	47
July 7	74	46
July 8	78	46
July 9	75	54
July 10	77	52
July 11	84	53
July 12	89	53
July 13	92	52
July 14	92	52
July 15	84	52
July 16	81	52
July 17	79	58
July 18	81	57
July 19	81	56
July 20	79	55
July 21	79	54
July 22	87	53
July 23	80	53
July 24	78	54
July 25	75	54
July 26	71	52
July 27	75	51
July 28	77	50
July 29	77	55
July 30	76	54
July 31	77	54

August 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)
August 1	78	53
August 2	78	53
August 3	78	52
August 4	79	52
August 5	75	51
August 6	83	51
August 7	97	50
August 8	94	49
August 9	80	49
August 10	82	49
August 11	82	48
August 12	80	56
August 13	85	55
August 14	79	55
August 15	73	51
August 16	73	51
August 17	75	49
August 18	82	48
August 19	85	48
August 20	75	47
August 21	77	50
August 22	78	53
August 23	79	52
August 24	70	57
August 25	70	50
August 26	73	49
August 27	76	48
August 28	79	50
August 29	90	51
August 30	79	55
August 31	78	53

September 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	74	52	0.00
September 2	78	49	0.00
September 3	80	49	0.00
September 4	84	50	0.00
September 5	80	48	0.00
September 6	82	48	0.00
September 7	79	48	0.00
September 8	89	n/a	0.00
September 9	90	n/a	0.00
September 10	95	n/a	0.00
September 11	76	51	0.00
September 12	82	52	0.00
September 13	94	n/a	0.00
September 14	82	n/a	0.00
September 15	84	n/a	0.00
September 16	86	54	0.00
September 17	82	49	0.00
September 18	75	52	0.00
September 19	76	51	0.00
September 20	77	50	0.00
September 21	80	51	0.04
September 22	76	58	0.52
September 23	77	57	0.00
September 24	79	58	0.00
September 25	76	51	0.00
September 26	76	51	0.00
September 27	79	55	0.00
September 28	76	54	0.00
September 29	78	55	0.00
September 30	78	54	0.00

October 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	n/a	n/a	n/a
October 2	n/a	n/a	n/a
October 3	n/a	n/a	n/a
October 4	n/a	n/a	n/a
October 5	n/a	n/a	n/a
October 6	n/a	n/a	n/a
October 7	n/a	n/a	n/a
October 8	n/a	n/a	n/a
October 9	n/a	n/a	n/a
October 10	n/a	n/a	n/a
October 11	n/a	n/a	n/a
October 12	n/a	n/a	n/a
October 13	n/a	n/a	n/a
October 14	n/a	n/a	n/a
October 15	n/a	n/a	n/a
October 16	n/a	n/a	n/a
October 17	n/a	n/a	n/a
October 18	n/a	n/a	n/a
October 19	n/a	n/a	n/a
October 20	n/a	n/a	n/a
October 21	n/a	n/a	n/a
October 22	n/a	n/a	n/a
October 23	n/a	n/a	n/a
October 24	n/a	n/a	n/a
October 25	n/a	n/a	n/a
October 26	n/a	n/a	n/a
October 27	n/a	n/a	n/a
October 28	n/a	n/a	n/a
October 29	n/a	n/a	n/a
October 30	n/a	n/a	n/a
October 31	n/a	n/a	n/a

November 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	70	45	0.00
November 2	65	37	0.00
November 3	68	44	0.00
November 4	75	41	0.00
November 5	78	40	0.00
November 6	75	38	0.00
November 7	72	40	0.00
November 8	72	46	0.00
November 9	79	59	0.00
November 10	86	64	0.00
November 11	90	52	0.00
November 12	87	50	0.00
November 13	86	46	0.00
November 14	83	46	0.00
November 15	65	46	0.00
November 16	71	49	0.00
November 17	71	47	0.00
November 18	71	46	0.00
November 19	68	49	0.00
November 20	64	49	0.00
November 21	64	47	0.00
November 22	68	48	0.00
November 23	71	53	0.00
November 24	80	49	0.00
November 25	82	39	0.00
November 26	63	37	0.36
November 27	60	41	0.00
November 28	61	48	0.00
November 29	72	39	0.00
November 30	76	42	0.00

December 1990 San Luis Obispo Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	72	49	0.00
December 2	70	49	0.00
December 3	70	38	0.00
December 4	79	42	0.00
December 5	76	n/a	0.00
December 6	72	48	0.00
December 7	77	41	0.00
December 8	79	40	0.00
December 9	80	40	0.00
December 10	79	42	0.00
December 11	75	38	0.02
December 12	62	36	0.00
December 13	64	39	0.00
December 14	61	43	0.00
December 15	62	35	0.08
December 16	55	33	0.00
December 17	55	33	0.00
December 18	59	33	0.00
December 19	60	36	0.07
December 20	54	33	0.25
December 21	48	30	0.01
December 22	43	27	0.00
December 23	44	17	0.00
December 24	55	26	0.00
December 25	55	n/a	0.00
December 26	61	33	0.00
December 27	64	33	0.00
December 28	67	33	0.00
December 29	58	34	0.00
December 30	55	41	0.00
December 31	53	35	0.00

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Weather Station Details

Years	Station	Coordinates
1999–2024	San Luis Obispo Airport	location
1893–1998	San Luis Obispo Poly	location