YELLOWTAIL DAM, MT

Total of Precipitation (Inches)

(249240)

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
1948	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	2.98		0.69		0.55		0.05		0.19		0.49		4.95	f
1949	1.69		0.69		2.01		1.44		2.45		1.81		0.44		0.12		1.78		1.44		0.11		0.39		14.37
1950	0.29		0.05		0.75		0.79		1.24		2.90		2.22		1.39		3.08		-----	z	-----	z	-----	z	12.71	c
1951	-----	z	0.10	b	0.84	i	0.99		1.51		3.12		2.25		1.66		2.83	b	1.19		-----	z	-----	z	13.65	d
1952	0.29		1.77		0.30		0.30		3.21		2.15		2.33		0.48	i	-----	z	-----	z	-----	z	-----	z	10.35	e
1953	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1954	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1955	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1956	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1957	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1958	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1959	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1960	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1961	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.00	l
1962	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	0.30		0.30	k
1963	2.36		0.31		0.82		7.46		1.83		1.98		1.03		0.11		2.44		0.54		0.26		1.27		20.41
1964	0.42		0.36		0.77		7.09		3.97		7.18		0.01		3.38		0.09		0.63		1.59		1.05		26.54
1965	1.20		0.58		0.99		1.17		3.53		1.55		0.90		3.55		3.28		0.35		0.63		0.67		18.40
1966	0.48		0.73		1.11		1.95		1.51		1.58		1.26		1.23		1.47		1.20		0.60		0.66		13.78
1967	1.79		0.65		1.83		2.58		1.76		7.52		0.35		0.35		2.29		1.16		0.70		1.15		22.13
1968	1.52		0.99		1.30		1.30		2.45		4.63		0.78		2.53		1.41		1.34		2.41		1.08		21.74
1969	1.57		0.00		0.64		2.40		2.12		6.22		1.83		0.96		1.08		1.63		1.37		0.24		20.06
1970	1.07		1.05		2.14		3.42		5.06		2.01		0.75		0.04		2.94		1.41		1.39		0.42		21.70
1971	1.26		1.37		0.93		3.23		2.44		0.58		0.46		1.22		2.81		6.14		1.11		0.49		22.04
1972	1.58		0.86		0.78		2.36		2.34		1.24		0.95		1.49		1.73		2.15		0.46		1.36		17.30
1973	0.92		0.25		3.05		4.56		1.42		1.47		0.75		0.95		3.90		0.61		1.23		1.05		20.16
1974	0.21		0.29		1.86		2.50		3.09		2.57		2.13		1.28		3.04		4.30		1.14		0.27		22.68
1975	1.44		0.86		1.32		1.92		6.04		2.29		1.34		0.39		0.46		2.06		1.69		1.60		21.41
1976	0.66		0.80		0.59		2.67		1.04		3.54		0.26		2.49		1.64		1.33		0.87		0.42		16.31
1977	1.31		0.13		2.11		1.05		2.13		2.04		0.33		1.13		1.26		1.26		1.11		1.59		15.45
1978	1.67		1.51		0.17		5.67		9.28		0.65		0.88		1.53		3.36		0.11		1.84		1.31		27.98
1979	0.78		0.64		0.86		1.90		2.26		1.32		1.16		0.93		0.19		1.64		0.44		0.21		12.33
1980	1.12		1.07		2.51		0.60		3.36		1.25		0.51		1.03		1.40		1.53		0.71		0.68		15.77
1981	0.33		0.62		1.48		0.33		9.05		2.08		5.22		0.42		0.28		1.99		0.39		0.61		22.80
1982	0.66		0.39		2.12		0.88		2.68		7.10		1.98		0.63	a	3.06		1.87		0.56		1.86		23.79
1983	0.43		0.34		1.11		1.04		3.00		1.57		0.57		0.74		3.03		1.03		1.11		1.55		15.52
1984	0.99		1.14		1.30		2.99		3.06		2.37		0.37		0.73		2.04		0.33		0.62		0.98		16.92
1985	0.77		0.62		2.05		0.90		1.61		2.65		1.24		1.26		1.58		0.41		1.05		0.50		14.64
1986	0.81		1.86		1.75		2.96		2.91		2.24		1.14		0.41		3.02		1.82		1.97		0.08		20.97
1987	0.73		0.53		1.33		0.35		4.05		1.11		4.58		2.89		1.40		0.37		0.32		0.32		17.98
1988	0.98		1.48		0.66		1.66		6.65		0.95		0.07		0.14		1.80		1.18		1.35		0.91		17.83
1989	1.04		0.59		1.91		2.30		1.36		2.10		1.77		0.64		0.80		3.43		0.59		2.51		19.04
1990	0.12		0.94		0.84		2.54		2.99		0.67		0.73		0.71		0.18		2.63		0.99		0.43		13.77
1991	0.80		0.54		1.13		2.54		1.84		1.01		0.51		0.57		5.13		2.26		2.26		0.18		18.77
1992	0.15		0.02		2.12		2.64		2.31		7.81		2.31		1.15		0.43		0.78		0.53		0.95		21.20
1993	0.55		0.43		0.84		2.86		1.21		3.10		4.80		1.22		0.67		3.14		0.48		0.41		19.71
1994	0.76		0.82		1.19		2.52		0.95		0.98		2.00		0.07		1.64		3.87		0.78		0.24		15.82
1995	0.87		0.53		2.01		2.88		3.60		2.13		1.39		0.45		1.60		2.38		0.79		0.16		18.79
1996	0.97		0.89		1.87		0.92		4.15		1.05		0.20		0.33		1.30		2.37		0.93		2.15		17.13
1997	1.59		0.29	a	1.21		1.49	e	1.90	b	3.23	a	4.40		2.02		0.41		2.00		0.60		1.07		20.21
1998	0.70		0.11		1.59		0.92		0.12		2.47	b	1.11		1.58		2.32		2.23		0.82		0.49		14.46
1999	0.88		0.11		0.60		1.89	l	2.21		1.53		0.27		0.57	a	1.18		0.72		1.10		0.81		9.98	a
2000	0.73		1.67	a	0.90		1.56		3.58		3.09		0.19		0.34		1.51		0.77		0.65		0.79		15.78
2001	0.35		0.67		0.45		1.70		0.47		2.32		0.74		0.00		0.85		0.83		0.85	b	0.05		9.28
2002	0.66	b	0.63	a	0.73		1.09		1.94		1.70		2.20		0.85		1.27		1.47	d	0.51	a	0.53		13.58
2003	1.16		2.05	c	1.58		1.02		3.77		1.74		0.12		0.34		0.25		1.31		0.70		0.49	a	14.53
2004	0.19		2.00		0.62		0.91		1.33		1.83		1.35		0.52		2.28		2.02		0.19		0.31		13.55
2005	0.58		0.25		0.84	a	3.14		2.82		3.52		1.00		1.43		1.11		2.23		1.26		0.60	k	18.18	a
2006	0.25		0.84		1.73		1.28		0.75		0.54		-----	z	0.09		4.24		3.37		0.24		0.55		13.88	a
2007	0.83		0.96		2.52		1.96		2.41		6.39		0.14		0.12		1.26		2.50		0.55		0.57		20.21
2008	0.79		0.05		0.32	a	0.57		4.88		2.34		1.09		0.27		3.27		2.01		0.56		1.18		17.33
2009	0.79	a	0.37		1.70		1.23		0.81		3.03		0.39		0.57		0.03		2.45	a	0.05		0.69		12.11
2010	0.53		1.00		0.47		2.48		6.11		3.30		0.66		2.10		0.78		0.57		1.66		0.00		19.66
2011	-----	z	0.64	y	-----	z	1.82	v	6.27	u	2.08	v	-----	z	2.09	x	-----	z	-----	z	0.72	h	0.47		0.47	k
2012	-----	z	0.53	w	-----	z	-----	z	0.54	x	-----	z	0.51	g	0.08	c	0.00		0.95		0.46		0.21		1.70	g
2013	1.42		0.49	g	0.17	c	2.03	l	2.82	l	1.12	f	0.50	i	0.41	S	4.04	d	3.53	r	0.11	n	1.80	k	5.63	i
2014	1.18	k	1.15	S	4.00	b	2.59	d	1.79		2.23		0.96		2.55		1.65		0.22		1.43		0.82		18.24	b
2015	1.17		0.69		0.68		1.94		4.17		2.35		1.16	b	0.59		0.50		1.39		0.75	e	0.54	a	15.93
2016	0.75	j	0.77	c	1.69		2.95		0.96		0.06		0.30		1.87	a	3.86		3.12		1.15		0.68		17.41	a
2017	0.87	e	1.12	e	2.51		4.03		1.83		0.39		0.02		0.12		3.86		0.60		2.18		1.41	d	18.94
2018	1.86	y	1.86	f	1.00		3.08		5.39		3.22	h	0.66		2.43		0.63		1.84		1.05		0.46		16.54	c
2019	0.96		1.08	h	0.59	d	2.02		3.53		0.71		3.95		0.16		2.88		1.65	a	0.94		0.73		18.12	a
2020	0.15		1.18		0.72	a	1.07		1.33		2.66	a	0.44		0.30		0.94		3.69		0.00		0.32	d	12.80
2021	0.00		1.87		1.06		1.20	a	1.09	f	0.20		0.61		1.64		0.25		2.74		0.23		0.88		10.68	a
2022	0.15		0.71		1.13		2.28	d	2.10	g	2.17	i	1.39	a	1.47		1.24		0.74		0.76		0.71		10.58	b
2023	0.82		1.17		1.51		0.45		2.25		6.87		0.00		0.68		3.32		4.24		0.10		0.00		21.41
2024	0.40		0.98		0.87		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	2.25	i
Period of Record Statistics
MEAN	0.84		0.77		1.30		2.11		2.83		2.52		1.26		1.01		1.80		1.74		0.87		0.73		18.10
S.D.	0.49		0.52		0.74		1.44		1.85		1.89		1.22		0.85		1.25		1.18		0.56		0.52		3.83
SKEW	0.58		0.70		1.02		1.70		1.55		1.45		1.67		1.10		0.52		1.17		0.81		1.16		0.18
MAX	2.36		2.05		4.00		7.46		9.28		7.81		5.22		3.55		5.13		6.14		2.41		2.51		27.98
MIN	0.00		0.00		0.17		0.30		0.12		0.06		0.00		0.00		0.00		0.05		0.00		0.00		9.28
YRS	60		60		63		61		60		60		62		63		64		62		61		62		50