MONTEBELLO, CA

Average of Average Temperature (Degrees Fahrenheit)

(045790)

File last updated on May 6, 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
1979	54.87		56.19	a	60.30	a	67.00	a	67.60		74.64	a	76.08	a	75.59	b	79.84	e	68.39		62.10		61.86	c	67.04
1980	59.48	a	62.60		60.11		64.64	b	63.79	b	71.55	b	77.34		76.63	a	72.17	a	70.45		63.03	a	61.15		66.91
1981	59.20	a	61.50	d	58.95	b	64.43	b	68.77		76.77		76.74		77.74		73.83	a	66.90	a	63.95	a	59.25	a	67.34
1982	56.27	c	60.50	d	59.33	b	62.61	c	66.70	a	67.22	c	75.57	c	77.80	a	75.95	a	70.79	b	61.33	d	57.10	b	65.93
1983	60.00	f	59.67	d	60.50	c	61.29	b	67.78	a	69.94	c	76.22	a	80.69		79.29	b	72.66	c	62.66	a	58.64	b	68.12	a
1984	60.42	e	-----	z	64.25	c	65.56	f	72.97	a	72.35		79.26		78.98	b	82.08	d	69.07	a	61.38	d	56.91	b	69.77	b
1985	56.72	a	59.25		57.61		66.25	b	65.68		72.12	b	79.64	c	76.30	a	72.60	a	69.43	d	60.57	b	61.73	a	66.49
1986	64.72	d	60.20	a	62.68	a	66.31	d	67.90	e	72.68		74.26	b	77.52	a	69.75		69.95	a	66.10		59.73	a	67.65
1987	57.78	d	59.40	b	60.47		68.45	b	68.17	d	71.21	d	72.19	b	74.37	d	75.93	c	72.24	b	63.82		55.52	c	66.63
1988	58.27	a	61.95	a	65.39	c	65.86	a	-----	z	70.33		77.80	c	75.22	b	74.92	d	71.04	e	62.52	d	57.50		67.35	a
1989	58.21	e	56.87	a	63.60	a	69.32	b	67.21	c	70.71	b	76.20	a	74.45	a	75.64	b	68.12	e	65.40	a	61.29		67.25
1990	58.82	a	56.54	b	60.93	c	66.32	b	67.81	b	75.07	b	79.76	b	77.38	e	77.20	c	73.87	d	65.28		57.72	a	68.06
1991	58.25	a	63.41	e	57.98	d	65.04	c	66.72	d	-----	z	-----	z	75.57	a	75.43	c	73.03	b	66.22	a	60.09	c	66.17	b
1992	60.00	b	62.10	d	61.22	d	69.71	b	70.23	c	71.58		78.12	c	80.97	b	77.26	g	-----	z	65.08	d	56.33	b	67.53	b
1993	55.95	c	58.22	e	63.62	e	67.74	c	70.40	b	74.17	d	74.31	g	75.71	b	74.19	c	70.97	b	64.34	a	59.16	b	66.77	a
1994	-----	z	57.90	c	64.38	b	64.04	b	65.43	d	74.72	c	74.92	e	80.62	a	76.19	c	69.68	a	58.94	d	59.23		67.82	a
1995	57.38	b	64.72	e	62.07	c	64.98	c	65.20	a	69.48	f	76.29		78.09	c	77.26	g	70.28	d	-----	z	60.13		66.57	c
1996	-----	z	61.33	c	62.67	a	68.55	b	70.12	b	73.53		77.15		77.98	e	74.48	b	68.47	b	64.76	g	61.27	g	70.47	c
1997	59.38	c	60.92	b	66.30	c	-----	z	74.03	b	73.10		75.29	b	78.22	f	80.17	a	71.87	e	66.93	b	58.32	f	69.78	c
1998	59.27	a	57.07	e	62.69	b	61.92	d	64.46	g	69.85	g	77.81	e	80.28	h	73.84	e	68.00	h	61.68	e	57.50	g	64.90	e
1999	59.83	j	59.91	f	58.50	d	61.79	a	66.18	f	69.94	e	75.41	d	75.55	c	73.04	d	74.97	a	63.87	g	61.12	f	69.89	e
2000	61.02	c	59.63	b	61.29	c	67.40	i	70.80	f	75.34	h	75.85	h	79.08	f	75.72	e	67.91	i	61.09	h	63.54	q	64.41	h
2001	57.44	f	56.70	f	60.81	j	64.17	j	69.80	f	74.66	e	75.50	r	75.84	o	75.00	l	70.62	n	62.14	p	56.14	x	74.66	k
2002	58.26	d	63.09	e	61.39	c	63.34	k	-----	z	-----	z	76.88	k	75.00	i	77.33	o	66.26	n	64.77	s	58.86	t	60.91	i
2003	64.58	l	60.50	l	63.33	j	62.07	g	68.62	n	70.47	n	79.71	n	79.50	h	76.55	k	75.19	m	64.90	y	58.57	x	-----	z
2004	61.19	w	56.53	n	66.98	i	67.13	c	71.62	e	72.65	d	76.11	d	76.20	c	79.15	q	67.72	v	60.88	r	59.42	s	72.74	g
2005	58.28	o	60.33	s	63.15	g	66.31	l	69.62	k	70.88	m	77.92	k	78.33	k	72.12	n	71.34	l	66.19	v	60.97	l	-----	z
2006	59.57	i	61.81	o	55.19	o	63.61	k	69.58	l	76.88	r	82.00	x	77.56	o	77.44	u	-----	z	-----	z	-----	z	-----	z
2007	55.15	r	58.85	r	66.36	q	63.80	y	68.88	w	73.27	s	77.93	p	79.30	p	80.33	x	72.40	u	66.33	x	-----	z	-----	z
2008	57.50	w	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
2009	-----	z	58.82	i	61.25	k	66.30	j	69.79	n	68.69	v	78.19	r	77.15	r	78.29	m	-----	z	-----	z	57.82	a	57.82	k
2010	60.43	i	60.55	r	62.50	c	62.11	b	65.72	h	70.92	l	73.94	e	73.53	l	74.24	g	68.50	v	-----	z	-----	z	66.18	i
2011	48.25	u	57.05	r	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	58.64		60.15		61.61		65.50		68.32		72.45		76.48		77.17		75.61		70.64		63.41		58.95		67.03
S.D.	2.15		2.42		2.30		2.56		2.69		2.24		1.90		1.99		2.98		2.09		2.19		1.90		0.64
SKEW	0.86		-0.02		0.13		-0.11		0.49		-0.26		-0.12		0.55		0.39		0.28		-0.18		-0.06		-0.11
MAX	64.72		64.72		66.30		69.71		74.03		76.77		79.76		80.97		82.08		74.97		66.93		61.86		68.06
MIN	54.87		56.19		57.61		61.29		63.79		67.22		72.19		74.37		69.75		66.90		58.94		55.52		65.93
YRS	19		21		24		21		19		20		21		20		20		19		18		18		9