MAUNA LOA SLOPE OBS 39, HI

Total of Precipitation (Inches)

(516198)

File last updated on April 24, 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
1955	1.50	n	3.05	t	3.10	r	1.05	f	1.46	s	0.02	e	0.85	p	0.15	j	0.00		0.76	o	1.62	s	6.71	e	6.73	i
1956	12.89	s	4.28	s	2.93	s	0.92	o	1.76	y	0.40	e	4.25	u	2.70	w	0.82	k	1.98	v	4.01	p	0.00		0.40	j
1957	0.29	j	1.12	o	0.00		0.45	g	0.46		0.68	h	-----	z	6.41		5.00		1.68		0.43		3.83		17.81	e
1958	0.00		0.02		2.15		0.31		0.62		0.01		3.20		4.00		1.83		2.32		0.49		0.50		15.45
1959	10.33		3.51		0.11		0.88		0.00		0.00	f	0.33		5.76		2.82		0.72	a	1.97	c	0.28		26.71	a
1960	0.30		2.11		2.15		0.90	c	1.25	a	2.31		0.04		0.71		0.33		1.20		0.69		1.63		13.62
1961	0.17		1.26		0.63		0.77		1.02		0.07		0.34		1.00		0.67		3.32		2.91		3.13		15.29
1962	1.24		0.13		2.14		1.78		2.15		0.49		0.03		0.64	o	2.10	c	0.05		0.04		0.10		10.25	a
1963	2.86		0.73		4.36		6.47		4.14		0.87		1.98		1.81		1.68		0.18		0.17		0.00		25.25
1964	0.32		0.27		2.45		0.82		2.40		0.11		1.09		1.03		1.26		0.88		1.20		2.45		14.28
1965	1.58		0.75		1.03		2.74		5.84		0.86		1.88		0.19		3.17		0.36		2.76		0.41		21.57
1966	0.20		4.11		0.61		1.56		0.59		0.00		0.70		1.80		4.74		3.20		1.71		2.63		21.85
1967	0.46		0.34		4.13		2.06		2.75		1.84		3.66		2.31		1.33		1.67		4.57		2.99		28.11
1968	1.61		1.54		3.60		4.43		1.59		1.42		1.36		2.14		4.46		2.21		1.55		7.12		33.03
1969	5.29		1.45		1.36		0.97		0.65		0.02		0.25		1.00		0.39		0.58		0.08		0.32		12.36
1970	1.79		0.00		0.02		1.46		1.51		0.02		0.16		2.75		0.11		0.36		3.15		1.87		13.20
1971	6.97	a	0.25		0.77		3.67	d	0.49		0.33		1.40		0.11		0.46		0.81		2.55		0.40		18.21
1972	1.93		1.24		2.48		1.41		1.38		0.55		2.01	b	1.34		0.86		1.67	a	0.16		3.90		18.93
1973	0.01		0.00		1.66		0.00		0.93		0.00		1.78		0.76		1.51		0.60		4.66		4.66		16.57
1974	1.67		0.26		3.52		2.23		1.97		0.44		0.93		0.00		1.79		3.01		2.05		5.45		23.32
1975	7.15		2.65		0.80		0.76		0.00		0.16		0.16		0.28		0.11		0.24		1.36		0.34		14.01
1976	5.35		1.62		4.49		0.82		0.66		0.00		0.21		0.11		0.87		0.64		-----	z	0.09		14.86	a
1977	0.00		0.66	b	0.35		3.61		0.85		0.05		0.21		1.83	b	0.79		1.04	g	0.20		0.38	a	8.93	a
1978	0.01	a	0.00		0.41	b	1.15	g	2.77	c	1.43	b	1.25	a	2.50	c	0.44	b	0.32	b	7.31	c	0.52		16.96	a
1979	5.61	c	8.49	g	0.61	b	1.05	b	0.14	b	1.19	b	0.28	a	2.35	b	0.43	a	4.52	b	5.63	c	0.13	a	21.94	a
1980	11.55	a	1.00	a	15.57	e	0.40		1.06	c	0.21	a	1.06	b	0.31	a	2.37	a	0.47	a	0.12	a	0.67	a	34.79
1981	0.00		0.20	b	0.58	a	0.41	a	0.16	a	0.02		0.00		2.81	a	1.80	b	0.00		1.01	b	6.73	b	13.72
1982	7.81	b	10.12	a	12.49	c	2.21	a	0.64	d	0.62	a	4.73	b	5.54	d	1.36	a	0.34	a	1.68	b	1.32	c	48.86
1983	0.00	i	0.00		0.00		0.33	a	0.14		2.49	a	0.05		0.78	a	0.54	b	0.36	i	0.02	j	1.41	b	5.74	c
1984	0.40	a	0.30	b	0.35		0.25	a	0.26		0.00		0.39	d	0.47		0.70	c	0.67		1.55	d	1.45	e	6.79
1985	0.58	h	2.62	a	4.03	c	0.53	f	1.23	b	0.07		0.79		1.53	b	0.16		0.92	c	2.04	a	0.23		13.62	b
1986	0.00		0.79	b	0.77	b	9.41	b	1.30	a	0.17	a	1.84		2.89	b	4.07	d	0.10	a	2.61		0.41	a	24.36
1987	0.08	b	1.11	b	0.29		0.18		1.76	c	1.26	c	1.20		0.01		2.97	d	2.43	a	0.45	a	16.54	b	28.28
1988	2.76	c	0.03	b	1.84	a	1.76	b	0.00		0.76		0.00		1.76	a	0.25	b	1.34	d	3.87	d	1.37	e	15.74
1989	2.58	f	2.87	b	1.52	c	3.63	g	5.04	e	1.37	a	3.87	b	0.73	c	0.48	b	2.42	e	0.01		1.16	c	19.47	b
1990	12.78	f	3.02	c	0.33	h	0.07		0.04		0.01		0.97	b	0.80	a	1.05	g	0.78	a	10.32	d	6.79	b	22.80	c
1991	4.67	g	1.04	b	2.77	f	0.31	a	0.00		0.45		0.49		2.26	s	1.07	u	0.17		0.00	a	0.43	a	2.89	d
1992	0.04		0.34		0.00		0.00		0.00	b	0.00		2.77	a	3.57	c	4.57	b	0.52	a	4.17	b	0.86	b	16.84
1993	5.72	d	0.04	a	0.30	a	0.00		0.03	c	0.00	a	5.33	S	0.84	b	1.47	b	2.03	c	0.04		0.51	a	16.31
1994	2.69	a	3.22	a	3.42	a	0.00	S	0.31	b	0.42	b	2.08	d	2.51	a	3.42	d	0.41	a	2.51	c	0.00		20.99
1995	0.51	c	1.25	a	0.39	a	0.33		0.35	d	0.08		0.33	a	0.51	c	0.00	S	0.65	a	1.25	c	0.00	a	5.65
1996	3.71	e	4.68	d	5.63	c	0.12		0.00	a	1.40	d	2.49	c	0.08	b	0.38	a	1.15	a	3.77	d	1.22	b	24.63
1997	3.33	c	0.97		3.16	c	1.23	a	0.09	a	0.87	a	2.72	a	1.23	b	1.90	c	1.38	b	2.06	d	0.00		18.94
1998	0.32	a	0.03		0.00		0.02		0.13	b	0.03		0.21	a	0.73	b	0.17	b	0.70	S	0.57	b	0.02	a	2.93
1999	0.70	e	1.24	a	0.14	b	0.85	b	0.33	c	1.33		0.07		0.00		0.07		2.03		0.26		2.54	b	9.56
2000	0.27	c	0.31		0.08	a	0.01		0.02	b	0.12	a	0.05	a	1.26	e	1.38	S	3.10	b	5.07	c	0.00	b	11.67
2001	0.01	b	1.64	a	0.07	S	0.31	c	0.54		0.93	S	1.09	b	0.28	a	0.78	e	0.38	a	5.45	a	4.46	b	15.94
2002	4.32	c	1.09	b	0.23	b	1.70	a	8.60	e	0.01	b	1.35	b	1.49	S	1.51	c	0.88	b	0.00	a	0.04		21.22
2003	0.18	b	1.28	b	0.51	b	1.05	b	0.57	b	0.56	b	1.22	a	0.41	b	3.58	b	0.12	c	0.63	a	4.30	d	14.41
2004	2.78	S	0.67	c	7.66	c	2.63	d	2.80	d	0.12	c	0.97	b	1.80	b	0.40	c	2.33	c	1.17	a	0.69	S	24.02
2005	6.29	e	2.68	b	1.06	b	0.48	b	0.00		0.39	a	0.27	c	2.25	b	0.94		0.23	d	0.22		0.42	a	15.23
2006	2.38	a	0.96	c	6.46	d	0.27	c	1.80	b	0.08	a	0.42	a	1.70	c	0.40	S	0.73	b	0.28		0.54	c	16.02
2007	0.61	a	0.75	d	0.84	b	0.00		0.86	a	0.00	S	1.96	b	1.21		0.77	e	0.69	a	1.58	b	5.24	e	14.51
2008	0.39		2.54	b	0.43	a	2.53	d	0.00	a	0.23	a	0.83		1.43	a	0.02	a	0.33	b	0.24	d	4.02	c	12.99
2009	0.27	b	1.06	b	3.04	b	1.54	b	0.08	b	0.06		1.44	c	1.24	e	0.00		1.09	c	0.88	c	0.30	a	11.00
2010	0.00	b	0.06	b	0.10	a	0.61	a	0.00	b	0.01		0.00	k	0.00		0.01		0.10	b	0.15	a	2.21	e	3.25	a
2011	0.67	a	0.38	a	1.37	b	1.07	S	1.59	c	0.75	a	0.09	f	1.63	d	0.50	e	0.05	b	0.77	e	2.48	c	11.26	a
2012	0.00	p	1.00	m	1.05	c	0.45	a	0.00	e	0.00	S	0.02	f	1.54	f	0.04	f	0.83	d	1.08	g	0.13	h	2.33	h
2013	0.56	f	1.04	e	0.74	e	0.54	d	1.50	e	0.03	e	0.62	g	0.01	S	0.10	f	1.57	e	0.23	g	0.70	e	6.13	d
2014	2.18	e	0.84	e	3.85	e	0.54	e	0.50	S	0.25	e	1.10	e	3.31	g	2.15	e	5.47	e	0.53	g	0.43	f	16.38	d
2015	4.35	S	0.16	S	6.90	e	0.51	d	0.34	f	0.24	e	1.37	e	7.93	f	1.54	d	1.35	S	0.07	f	0.04	e	12.11	d
2016	0.00	g	0.00	e	0.10	d	0.00	S	0.61	f	0.28	d	2.32	f	3.49	S	1.41	e	0.55	e	0.00	g	9.34	S	15.17	d
2017	0.08	g	0.33	e	1.72	d	0.91	e	1.65	e	0.19	d	0.05	e	1.51	d	0.92	S	1.26	f	1.90	g	2.27	f	7.28	d
2018	0.82	f	1.32	e	5.49	S	3.21	e	0.50	e	0.00	S	0.25	e	12.88	f	1.19	f	3.53	e	0.22	h	0.23	h	14.30	e
2019	0.00	g	3.75	e	0.04	e	0.74	d	0.17	e	0.83	e	3.06	d	3.88	S	2.27	f	1.19	e	1.13	g	0.97	f	13.66	d
2020	4.93	e	0.32	S	2.60	d	1.04	d	0.39	f	0.00	d	0.92	e	0.95	f	1.15	e	1.43	S	1.20	g	0.44	g	12.39	d
2021	4.52	g	0.44	f	4.78	d	0.36	d	2.71	f	0.67	e	0.47	S	1.94	g	0.51	f	0.27	g	0.29	f	7.50	S	13.31	h
2022	0.45	g	0.24	e	0.16	d	2.92	S	3.74	c	0.23	d	0.67	a	0.59		0.33	e	1.47	f	0.24	j	-----	z	8.88	d
2023	0.00	x	0.51	w	7.76	w	3.88	y	-----	z	-----	z	1.75	x	0.22	x	-----	z	0.00	v	-----	z	-----	z	0.00	l
2024	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
Period of Record Statistics
MEAN	2.35		1.28		2.18		1.29		1.17		0.46		1.21		1.58		1.36		1.23		1.89		2.23		18.30
S.D.	2.86		1.62		2.89		1.62		1.59		0.58		1.21		1.45		1.33		1.16		2.11		2.99		8.36
SKEW	1.41		3.03		2.49		2.77		2.49		1.60		1.43		1.44		1.24		1.52		1.76		2.34		1.29
MAX	11.55		10.12		15.57		9.41		8.60		2.49		5.33		6.41		5.00		5.47		10.32		16.54		48.86
MIN	0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		0.00		2.93
YRS	51		62		64		62		61		65		59		58		60		61		53		61		41