PORTOLA, CA

Average of Average Temperature (Degrees Fahrenheit)

(047085)

File last updated on April 18, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)	JAN		FEB		MAR		APR		MAY		JUN		JUL		AUG		SEP		OCT		NOV		DEC		ANN
1915	31.55	a	34.79		39.61		43.92		46.00		49.37		58.48		61.85		56.07		48.42		40.05		-----	z	46.37	a
1916	27.53		32.55		38.11		49.32		46.50		49.53	a	60.42	e	53.92		49.48		45.05		40.20		32.11		43.73
1917	26.66		32.55		33.08		47.02		49.94		55.23		70.27		76.04	d	51.55		-----	z	41.08		36.31		47.25	a
1918	36.85		35.54		36.27		44.45		45.26		54.98		65.77		60.31		56.27		53.31		43.88		31.44		47.03
1919	32.95		37.07		37.40		45.88		52.55		51.58		64.89		60.61		56.50		43.56		37.37		31.37		45.98
1920	37.90		41.76		42.34		42.95		45.13		53.42		56.10		61.82		54.55		43.21		-----	z	30.03		46.29	a
1921	31.13		-----	z	47.53	a	43.35		-----	z	61.62		58.30	a	56.61		-----	z	50.47		43.15		40.04	c	48.02	c
1922	21.55		26.41		28.34		28.35	c	39.67	g	52.18		64.10		54.69		52.10	a	45.69		37.05		35.40		40.53	a
1923	31.19	b	-----	z	39.47		45.75		53.16		55.05		62.39		60.21		60.18		50.21		42.32		30.81		48.25	a
1924	23.85		38.47		34.74		45.50		54.81		65.39	b	62.94		51.89	d	45.41	b	37.21	c	34.57	b	29.47		43.69
1925	32.42		38.80	a	41.44		49.43		58.12	c	60.50	b	62.94		55.77		48.73		43.40		37.57		31.18	a	46.69
1926	29.65		33.46		43.32	a	47.63		-----	z	62.78		66.14	b	-----	z	-----	z	-----	z	40.12	e	28.83	g	46.16	e
1927	26.45	c	31.48		36.13		38.37		47.50		53.70		63.26		57.15		47.70	e	43.18		39.66	a	25.32	a	42.49
1928	29.00		30.93		40.40	a	39.37		57.48		54.82		61.68		58.73		50.52		35.87	a	33.25		24.44		43.04
1929	24.53	m	33.22	l	36.13		39.67		50.44		55.92		63.03	a	-----	z	53.40		47.60		40.88	d	36.02		47.01	c
1930	24.47		35.14		39.18		42.10		46.84		59.23		59.35		55.68		53.37		43.77		37.07		32.89		44.09
1931	30.11		33.91		43.19		48.85		55.95	b	57.12		67.90	a	62.32		50.50		43.71		35.85		30.60	e	46.67
1932	27.50	b	32.14		41.40		40.57		47.77		62.70		-----	z	62.30	a	55.85		43.76		-----	z	22.24		43.62	b
1933	20.26		19.45		33.13		41.22		42.87		58.90		64.42		60.35		52.15		55.61		39.25		30.03		43.14
1934	34.56		36.34		43.95		45.72		49.56		52.58		59.06		-----	z	-----	z	49.02	a	38.67	a	34.47	a	44.39	b
1935	-----	z	33.82		32.29		42.88	a	50.48		58.97		60.69		61.53		57.73		46.58	g	35.79	i	29.16		47.51	c
1936	33.78	b	32.72	f	39.53		46.93		50.74	f	57.38	a	62.58	a	59.50		-----	z	47.27		37.65		29.84		46.05	c
1937	16.29	n	30.15	a	37.41	b	40.42		51.81		55.77		63.45		60.84		55.45		47.98		39.28		33.22	b	46.89	a
1938	32.32		27.09	a	32.92		43.35		49.93	a	58.98		62.39		60.29		56.28		45.60	a	33.98		33.82		44.75
1939	31.13	a	24.21		39.50	a	47.27		50.52		55.30		63.50		63.52		55.20		45.47		38.97	a	36.26		45.90
1940	32.31		34.40		40.16		44.62		53.61		62.40		60.55		62.40		53.25		48.16		35.37		33.33	b	46.71
1941	32.94		35.94	a	39.40	a	40.12		50.15	a	53.92		62.81		59.00		51.47	a	44.15		38.98		31.03		44.99
1942	27.43	c	27.45		35.32		42.19	a	45.90		55.05	b	62.52		60.78	a	53.40	a	48.67	b	39.42		33.31	e	44.29
1943	32.70	a	34.05		-----	z	-----	z	50.27		51.33	a	63.40	b	56.37	a	58.43		47.32	f	39.75	f	32.98	e	47.44	d
1944	-----	z	32.85	e	35.09	d	41.15	c	49.78	f	53.78	c	61.11	d	59.77	e	56.77	d	49.46	e	33.22	e	35.45	c	45.87	b
1945	30.84	f	34.32	f	35.15	e	42.24	c	48.76	b	56.00		-----	z	-----	z	-----	z	51.38	e	37.34	e	31.96	d	43.26	e
1946	31.45	a	30.44	a	37.56		45.18		50.37	a	53.33		62.56		61.85	a	54.19	a	43.53	a	36.52		34.93	a	45.16
1947	29.85		39.12		40.24		45.72		54.88	a	56.38		57.95		58.73		57.28		48.11		35.20		31.08		46.21
1948	35.37		30.86	a	33.13		39.38		46.61		57.04	b	60.98		57.87		54.91	a	47.71		38.37		24.66		43.91
1949	16.03		24.70		36.65		47.65		52.43	a	58.40	a	62.27		60.62	b	59.10		46.94	g	43.26	a	27.34		44.40	a
1950	23.18		35.30		37.37		45.15		50.40	a	56.23		62.63	a	60.37		53.92		47.92		44.63		38.98		46.34
1951	30.85		35.29		37.45		46.43		50.58		57.35		62.82		61.06		59.88	d	44.89	c	38.60		28.13		46.11
1952	23.19		29.36		30.06		45.03		51.37		54.52		66.00		60.66		57.73		52.03		34.13		30.97		44.59
1953	36.52		35.22	a	37.26		42.13		44.79		52.53		63.45		59.35		61.22		47.00		41.23		34.71		46.28
1954	32.42		37.29		35.44		47.27		54.52		55.91	b	64.10		58.74		54.05		47.40		40.93		30.60		46.55
1955	22.42		28.61		35.08	a	37.57		50.19	b	57.35		60.81		62.84		56.40		49.18		38.65		34.61		44.48
1956	30.10		23.59	a	37.29		43.83		50.68		56.70		64.13		59.62	a	57.07		47.27	c	38.37		31.63		45.02
1957	22.18		34.84		39.68		43.37		49.65		59.92		62.21		58.11		58.43		45.34		36.98		32.90		45.30
1958	31.66		37.50		33.58		41.48		53.97		56.87		62.95		67.02		-----	z	51.38	a	40.32		38.63		46.85	a
1959	36.46	c	31.70	a	41.03		47.22	a	48.55	a	59.68		66.83	a	61.62	a	54.50		50.77	a	38.62	a	28.78	a	47.15
1960	26.82	c	32.88	e	41.33	b	43.63		47.94		59.37	d	65.27		60.30	a	57.15		46.37		34.83	f	31.58		46.60	a
1961	33.71		35.41		36.37		41.42		45.11		59.77	f	61.66		63.09	d	54.15		45.82	f	36.57	b	31.34		43.88	b
1962	28.26		29.77		32.11		47.43		47.97		57.42		62.55		60.55		58.12		48.63		41.08		36.29		45.85
1963	31.32		43.16		36.39		37.78		52.56		56.05		59.11		59.23		59.48		50.05		39.23		34.52		46.57
1964	29.55		28.50		35.32		41.95		48.15		54.72		62.79		-----	z	53.78		51.52		34.47	a	36.14	b	43.35	a
1965	29.68	a	34.18		38.55	a	43.88		48.31		56.92		62.35		60.66		52.17		50.87		37.73		27.28	a	45.22
1966	26.45		28.64		39.40		46.85		54.87		57.10		60.60		65.24		57.63		49.45	b	38.68		30.85		46.31
1967	31.13		35.88		35.87		34.60		50.74		56.77		64.90		66.92	a	60.35		49.62	a	42.27		25.05		46.17
1968	-----	z	37.12	a	39.82		43.97		49.60	a	59.58		66.24		59.71		56.60	a	48.79		39.38	a	28.45		48.12	a
1969	29.74		27.98		33.55	a	43.40		55.05		58.55		64.66		63.42		58.77		44.45		39.95		34.85		46.20
1970	34.76		38.41	a	39.74		40.95	a	51.60	a	59.05		63.92		61.87		54.81	f	42.80	i	39.87		-----	z	47.80	c
1971	28.83	v	32.16		32.65	r	40.79	f	45.29	e	-----	z	64.42	a	62.54	e	53.40	a	43.50	l	35.31	q	26.50	n	51.56	g
1972	23.52	e	33.70	i	44.19	g	40.91	c	50.66	c	60.74	i	64.43	d	62.28	f	53.74	e	47.90	k	35.65	m	-----	z	46.65	g
1973	30.21	n	34.74	k	-----	z	44.97	o	51.98	i	58.80	o	62.82	n	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1974	-----	z	32.73	h	38.19		40.80	c	48.80	d	56.95		60.58		60.44		58.35		-----	z	-----	z	22.75	w	52.01	e
1975	29.04	c	31.77	d	36.05	c	34.88	d	49.27	i	56.65	d	62.24	b	58.60	b	60.17	c	45.39		35.79	f	33.96	d	44.88	b
1976	32.04	d	33.81	e	35.65	d	40.63	g	50.11	h	53.27	b	61.62	b	56.18	f	58.23		48.52	b	41.23	b	32.09	d	44.05	c
1977	27.47	b	37.00	c	35.76	j	46.33	d	43.56	f	65.02	h	64.02	c	64.48	d	54.46	e	49.58	k	38.84	e	40.06	w	47.51	e
1978	33.59	n	35.36	c	44.54	d	42.10	a	50.52	a	57.22	c	65.00		63.57	c	55.02	c	51.73	a	36.20	c	25.50	m	50.13	b
1979	27.76	b	31.96	d	39.91	c	43.05		53.28	b	57.62	a	64.12	a	61.44		61.09	a	50.27	c	37.34	b	34.22	b	46.84
1980	33.53	a	38.57	b	36.60	a	45.62		49.67	e	53.12	b	64.78	d	61.42	a	57.80	c	49.68		40.58	j	35.89	d	47.88	a
1981	36.12	c	35.23		39.80	d	45.95	b	-----	z	61.41	a	63.75	a	66.69	e	-----	z	-----	z	41.11	h	38.41	d	48.42	d
1982	26.86	j	36.05	f	38.83	j	40.17	c	51.48	b	56.76	a	63.31	b	63.29	b	55.04	e	44.62	k	34.29	d	31.46	g	52.05	e
1983	34.13	h	36.14	c	38.09	c	38.46	e	51.29	c	56.00	f	58.68	a	62.62	c	57.29	d	49.67	e	36.79	a	35.71	c	46.48	b
1984	32.09	d	-----	z	43.33	s	42.88		54.35		57.09	c	68.27	a	63.95		58.70		44.52	a	36.02	b	28.15	a	48.60	b
1985	30.53	b	30.63	a	32.67	a	46.18	h	49.50	a	60.62		66.02	c	61.73		52.57		46.16		31.00	b	33.10	f	46.14	b
1986	39.47		38.62	c	42.89		43.88		50.81		59.67		61.87		64.57	a	50.12	b	47.73		40.58		34.27		47.87
1987	27.71		34.22	a	37.68	a	48.25		52.84		59.90		59.68	a	63.80	a	58.50		52.32		39.24	a	29.50		46.97
1988	28.15	a	35.53		39.67	b	45.42		48.57	b	57.98		66.89		65.56		57.22		53.27	a	37.88	a	29.27		47.12
1989	24.81		26.77		39.45		47.07		49.43	b	58.15		61.95	a	58.81		55.16	b	45.76		38.65		33.63		44.97
1990	31.18		25.68		38.67	b	47.93		48.42		55.17		63.96	e	62.97	b	56.98		48.90	a	35.29	a	20.92		44.67
1991	29.55	a	39.85	a	33.05	b	41.93	a	46.26	b	54.56	c	65.60	b	63.04	d	60.26	a	51.02	a	38.76	a	30.52	b	46.20
1992	30.44		37.34	a	41.09	b	47.50	b	57.10	e	59.95	a	63.41	d	65.55	b	57.82	b	50.11	c	37.54	b	24.42	e	47.69
1993	21.76	d	27.62	b	39.40		42.18	e	51.76		55.30		61.23	a	60.83	a	56.23	b	49.22	a	35.79	a	29.66		44.25
1994	34.23		28.92	b	41.31		44.45		51.15	a	57.48	c	67.21		62.37		56.65		44.92		29.15		28.41	b	45.52
1995	32.10	b	39.11		35.19		39.98	a	47.97	a	55.62	a	62.03	b	61.12	e	57.57	b	49.21	b	42.55	a	34.76	b	46.43
1996	33.77	c	35.36		37.65	a	43.48		49.84	b	59.46	c	67.00	h	64.59	c	55.38	b	47.77	c	39.79	a	33.13	d	45.48	a
1997	30.81	d	34.19	a	42.31		43.59	a	54.16		57.37		63.16		63.03	a	56.85		44.45	b	39.93	a	28.20	d	46.50
1998	32.20	a	31.39		37.97	b	41.48	a	43.70	a	55.15		65.13	e	64.06	d	58.45	b	44.27		36.62	f	27.07	b	45.53	a
1999	32.52	c	31.38		36.62	c	39.80		49.89		56.90	e	-----	z	61.25	a	58.71	a	50.13	a	41.76	a	31.85		44.62	a
2000	32.32	c	35.41	b	38.63		45.57	b	51.16		60.90		60.97	a	63.71		56.72	e	46.59	b	33.22	a	34.12	a	46.61
2001	29.32		29.46	a	41.69	b	39.55	a	57.27	a	59.40		64.02	a	64.61		60.82	s	51.68		39.34	a	30.30	a	46.06	a
2002	28.37		34.43		36.37		45.08		49.13	a	59.87		67.39		62.97		57.95		46.31	b	38.62		32.70	a	46.60
2003	37.32	a	33.46		39.44		37.72		50.74		61.33	c	67.35		62.81		59.77		51.45	b	34.29	b	32.17	b	47.32
2004	29.60	a	31.57	b	44.20	a	44.91	b	50.50	a	58.97	a	65.03		63.65		56.07	b	44.15	d	35.16	b	31.71	b	46.29
2005	25.27	e	33.67	a	39.34	c	42.33	a	51.05	b	54.26	a	67.92	a	64.24		53.88	b	48.69	e	40.69	c	33.32	i	47.39	a
2006	32.52	e	33.87	e	30.21	e	42.34	e	53.78	b	61.67	d	68.14	c	61.73	a	57.10		45.87		38.94	d	30.57	h	47.83	a
2007	28.78	d	34.46	b	41.10	a	44.41	a	52.62	a	58.75		66.73	a	63.69		55.16	b	46.50	a	39.45	a	28.82	f	48.33	a
2008	25.87	e	28.26	b	36.57	b	42.12	f	51.68	c	58.55		65.18		66.16	b	59.02		48.66	b	41.61	b	28.13	d	46.33	a
2009	33.20	d	33.42	b	36.63	d	43.56	c	54.90	a	57.05	a	65.92		63.47	a	61.60	d	46.50	d	39.42	f	25.40	g	49.62	b
2010	32.27	e	34.83	b	38.27	e	40.07	c	44.86	c	57.78	a	66.10		60.93	b	57.96	b	49.85	g	34.93	g	33.44	e	46.65	b
2011	32.16	c	30.43	e	35.37		40.60	d	45.93	b	56.24	a	63.30	a	62.82	a	61.38	a	47.72	v	35.32	e	30.85	d	44.95	a
2012	34.13	d	33.91	a	36.75	e	45.19	c	51.98	j	57.57	p	63.94		66.60	a	61.05		50.03	a	40.62		30.42		46.26	b
2013	21.77		32.23		41.87	a	46.35		51.50		61.20		68.45	a	62.87		57.17		44.87		39.47		24.85		46.05
2014	35.55		38.02		40.97	a	44.62		52.13		59.98		70.63	a	64.19		59.33		50.56		40.98		35.89		49.40
2015	36.74		41.62		44.39		43.98		50.87		63.72		65.21		64.87		59.18		52.19		33.63		30.03		48.87
2016	32.98		38.50		40.95		47.22		51.79		60.30		64.00		65.79		57.70		46.85		40.12	b	30.71		48.08
2017	26.77	c	33.62		40.06		42.31	a	53.68		61.95		67.61		68.11		57.50		46.52		39.16	a	33.42		47.56
2018	34.81		32.41		34.35	a	46.05		51.93	b	59.45	a	69.92		64.63	d	57.48		48.14	j	39.83	c	32.87	d	47.61	a
2019	33.59	c	22.82	q	36.19	e	47.48	a	49.21	b	60.30	b	63.98	a	65.45	b	55.02	d	44.16	b	43.73	h	32.27	a	48.76	b
2020	33.82	c	37.93	b	34.32		45.83		52.47		59.10	d	66.22	a	67.68		61.33		52.22	a	37.81	a	32.20	c	48.41
2021	33.60		33.72	c	37.13		46.30	b	52.09	b	65.12	a	70.74		66.71	c	59.48	a	46.26	b	41.43		36.03	o	50.24	a
2022	-----	z	-----	z	-----	z	-----	z	-----	z	61.25	p	66.74		67.82	a	62.43		51.45		32.11	b	24.52	g	56.11	g
2023	26.07	b	26.93		29.52		43.20		53.23		58.29	b	68.35	d	64.82	a	56.28		49.13	a	39.29	a	34.91	c	45.83
2024	34.25	a	34.21		36.79	c	40.84	n	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	35.08	i
Period of Record Statistics
MEAN	30.24		33.28		37.82		43.40		50.53		57.43		63.80		62.04		56.28		47.71		38.29		31.67		45.94
S.D.	4.36		4.23		3.50		3.43		3.16		3.11		2.86		3.39		3.23		3.27		2.90		3.64		1.45
SKEW	-0.62		-0.46		-0.14		-1.06		-0.03		-0.04		0.10		0.23		-0.72		-0.63		-0.55		-0.44		-0.16
MAX	39.47		43.16		47.53		49.43		58.12		65.39		70.74		76.04		62.43		55.61		44.63		40.04		49.40
MIN	16.03		19.45		28.34		28.35		42.87		49.37		56.10		51.89		45.41		35.87		29.15		20.92		42.49
YRS	97		98		102		102		97		101		104		101		99		92		93		92		56