YELLOWTAIL DAM, MT

Average of Maximum Temperature (Degrees Fahrenheit)

(249240)

File last updated on May 13, 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	74.23	a	89.81		80.97		67.63	a	48.03		33.45		65.69	f
1949	22.55		33.18		44.39		68.00		72.58		77.83		89.32		91.27	a	74.67		56.74		62.43		37.06		60.84
1950	18.55		45.61		41.26		56.90	a	62.97		74.30		81.74		84.29		72.47		-----	z	-----	z	-----	z	59.79	c
1951	-----	z	44.26	i	38.91	i	54.87		70.55		68.57		85.39		84.03		68.96	c	58.13		-----	z	-----	z	70.07	e
1952	35.06		43.07		40.68		65.57		70.13		81.70		86.10		87.23	i	-----	z	-----	z	-----	z	-----	z	60.33	e
1953	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1954	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1955	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1956	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1957	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1958	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1959	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1960	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1961	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1962	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	51.10		51.10	k
1963	31.37	a	53.00	a	57.26		58.90		72.81		78.93		91.48		90.81		84.86	a	74.42		56.17		38.03		65.67
1964	44.61		44.52		46.74		60.60		72.39		76.57		93.55		86.71		74.87		69.90		47.73		38.06		63.02
1965	47.45		43.32		38.48		62.27		68.16		78.63		90.77		86.87		60.67		72.97		53.83		45.94		62.45
1966	33.35		40.11		56.17	a	57.47		77.61		80.33		95.71		88.45		82.63		66.90		51.53		42.00		64.36
1967	44.84		47.86		48.74		59.03		68.26		73.03		89.61		91.74		82.03		67.68		48.87		38.55		63.35
1968	39.45		45.83		57.65		59.10		67.65		75.97		89.52		84.19		78.17		67.81		49.54	f	34.35		63.61	a
1969	23.30	a	36.39		45.39		68.27		74.48		74.79	a	87.48		95.45		82.83		50.61		52.60		40.16		60.98
1970	31.52		45.29		40.06		51.37		71.06		82.77		92.29		96.35		73.83		61.50	a	48.40		40.39		61.24
1971	33.68		41.61		49.48		60.00		70.58		82.38	a	89.35		95.87		74.30		59.00		48.57		37.26		61.84
1972	31.32		44.10		58.61		62.27		70.03		84.03		85.35		89.58		73.57		62.58		46.60		34.13		61.85
1973	37.68		44.14		51.65		54.76	a	71.07	a	82.23		89.35		91.13		72.80		69.32		43.24	a	46.29		62.81
1974	37.14	b	49.61		51.87		64.77		65.77		83.70		91.48		83.48		75.83		70.03	a	51.40		44.48	b	64.13
1975	39.26		33.00	a	43.55		49.61	b	65.71		74.56	c	90.83	b	85.00		78.83		65.00		48.34	a	46.23		59.99
1976	42.57	a	49.59		49.13		63.71	b	74.10		76.97	a	91.90		88.39		80.83		63.10		51.67		47.61		64.96
1977	33.32		51.26	a	51.03		67.17		73.71		84.30		90.58		83.45		76.67		66.61		46.17		37.06		63.44
1978	26.42		31.68		51.55		62.13		67.10		81.73		87.03		87.29		80.20		68.81		41.10		32.53	a	59.80
1979	23.39		38.89		52.00	a	59.73		70.35		82.33		88.83	a	87.77		85.80		69.32		44.73		51.84		62.92
1980	32.77		43.07		48.13		68.23		73.90		81.30		92.48		85.19		79.27		66.30	a	53.40		43.77		63.99
1981	48.42		47.79		58.52		67.30		68.23		76.97		89.13		89.61		84.07		62.00		56.60		42.87		65.96
1982	32.68		43.00		48.97	a	59.13		67.52		75.93	a	86.58		92.63	d	74.90		63.68		45.69	a	40.19		60.91
1983	48.29		52.96		54.61		59.07	a	67.77		80.03		93.16		95.81		76.80		66.77		49.07		20.52		63.74
1984	43.61		50.14	a	50.85	d	60.70	c	70.97	a	80.43		92.10	a	94.48		72.70		62.32	c	51.79	a	34.79	c	63.74
1985	35.03	a	39.00	a	49.55	b	67.86	a	78.35		82.03	a	93.39	c	87.19		72.10		65.23	a	29.38	a	42.19		61.78
1986	51.58		37.43		62.52		60.80		71.55		86.53		86.74		91.03	a	69.20		66.77	a	46.10		46.63	a	64.74
1987	44.87	a	49.50		52.39		73.90		76.68		85.00		87.47	a	83.71		80.20		69.10	a	56.13		44.23		66.93
1988	40.33	a	45.54	a	54.93	a	68.79	a	77.23		96.45	a	97.03		93.77		76.73		71.87	a	51.04	b	45.07	a	68.23
1989	43.97		30.56	c	47.63	a	61.17		73.65		82.93		94.10	a	89.68		81.67		64.39		54.10	a	40.10		63.66
1990	46.03		44.96	c	54.45		63.73		69.90	a	80.86	a	91.70	a	92.43	a	86.93		66.43	a	55.80		34.00		65.60
1991	34.20	a	56.27	b	53.43	a	57.52	a	69.52		83.23	d	92.64	c	95.90		77.46	d	64.57	a	46.07		46.39		64.77
1992	50.59	b	56.52	b	61.77	a	65.28	a	77.23		83.38	a	81.77	a	85.60	a	80.03		68.13		49.38	a	34.16		66.15
1993	34.82	c	36.61		56.40	a	61.97		75.67	a	77.07		78.42		84.84		75.72	a	64.77		45.55	a	47.80	a	61.64
1994	43.20	a	39.08	b	57.86	b	63.93		78.00		85.59	a	91.28	b	93.50	c	83.34	a	62.96	d	46.97	a	44.48	f	67.79	a
1995	45.57	a	47.93	a	49.70	a	58.59	a	66.90	a	79.50		89.17	a	94.72	b	77.60		63.97	a	52.44	e	44.67	a	64.23
1996	32.22	d	47.76		43.60	a	63.50		64.42		86.42	d	92.80	a	95.52	b	77.57	b	64.62	b	36.24	a	35.90	b	61.71
1997	35.18	c	46.00	a	54.23		54.81	d	75.00	c	81.66	a	84.97	b	85.24	f	82.81	d	65.67	g	50.17		43.00	d	60.78	b
1998	41.67	a	51.42	d	49.14	c	61.75	f	76.30	d	73.84	e	93.84		90.88	g	87.04	g	63.52	b	50.57	b	41.00	c	60.14	c
1999	44.62	e	53.05	f	58.38	j	57.17	l	69.62	j	78.67		93.15	e	90.96	e	77.47	k	68.14	i	62.56	c	48.52	d	69.75	f
2000	42.40	k	44.14	g	54.17	g	65.21	k	73.95	i	81.24	a	93.37	d	92.59	i	77.57	i	61.04	d	39.38	d	34.62	g	68.76	h
2001	43.07	d	31.57	g	51.71	g	60.23	d	75.09	h	79.07	c	92.63	d	95.19	d	81.52	c	61.52	d	53.91	g	40.10	j	73.32	e
2002	38.04	e	42.85	a	40.68	c	55.80	e	69.19	d	81.54	f	96.00	g	84.88	e	80.33	f	54.22	h	51.68	b	44.48	b	53.45	d
2003	46.60	f	39.71	d	46.41	b	65.21	a	70.42		79.20		96.53	a	95.87	a	77.93	c	69.07	c	44.11	b	43.70	a	66.20	a
2004	36.39		44.48		57.00		65.42	f	69.03	a	77.16	e	89.57	c	85.03	a	75.69	d	62.08	e	52.07	a	47.90		63.31	a
2005	34.16		46.86		52.06		59.97		65.00		77.37		91.68		84.81		76.13		61.90		51.50		38.00		61.62
2006	49.81		39.46		48.87		62.87		71.97		84.17		95.45		88.97		73.07		54.65		48.90		44.71		63.57
2007	41.29		37.67	a	58.72	b	56.47		71.50	a	80.93		95.61		87.74		77.70		62.84		50.80		38.90		63.35
2008	36.45		43.24		49.23		55.97		64.74		76.30		89.48		89.42		71.30		61.06		54.07		32.55		60.32
2009	42.42		44.64		45.94		55.67		70.06		74.63		86.74		84.84		82.27		49.93	a	53.76	a	27.38	b	59.86
2010	34.29		35.11		54.77	a	58.57		61.39		74.87		86.39		85.90		73.27		68.13		44.28	a	36.76	b	59.48
2011	39.90	a	31.85	a	45.93	b	54.20		59.81		75.87		90.45		89.39		78.87		65.13		48.37		43.52		60.27
2012	43.39		39.86	a	60.81		62.07		68.27	a	84.50		95.00		90.65		81.27		59.97		51.21	a	38.00	d	64.58
2013	39.48		41.07		50.71		53.33		70.29		79.07		90.26		89.58		76.60	e	55.32		48.20		39.52	f	63.08	a
2014	44.39		29.79		44.77	a	56.60		67.97		75.00		89.29		83.06		74.27		68.68		43.07		39.26		59.68
2015	41.58		44.82		58.55		61.07	c	62.56	f	82.60		87.65	e	87.06		81.33		66.71	c	41.23		40.66	b	63.03	a
2016	38.37	a	49.66		55.30	a	60.66	a	68.12	e	86.03		90.26		87.10		73.93		63.55		56.20		30.53	a	63.31
2017	27.04	e	48.38	o	52.94		57.33		69.77		81.59	a	93.42		86.10		72.83		59.16		51.27		38.54	e	62.73	a
2018	-----	z	-----	z	52.77	a	56.73		70.90		76.37		86.32		83.71		72.17		56.97		45.53		38.61		64.01	b
2019	40.97	a	18.32		39.39		58.59	a	60.48	f	77.53		83.48		86.29		74.77		52.68		50.40		45.94		57.12	a
2020	44.45		44.28		49.27	a	55.40		67.87		81.86	a	88.65		88.84		77.90	a	57.38	b	47.45	a	49.52	d	62.74
2021	44.83	a	26.44	c	52.61		58.63		67.32	f	90.46	b	94.74	d	86.39	c	78.52	a	63.82	c	56.37		38.45		62.84	a
2022	46.52	b	39.82		48.06		46.62	q	70.22	v	77.43	i	93.06		91.65		80.87		55.29	q	35.73		26.27	e	57.75	d
2023	34.55	b	44.14		37.65		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	38.78	i
2024	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	38.49		42.57		50.60		60.48		70.39		80.15		89.90		89.03		77.28		63.85		49.10		40.27		62.96
S.D.	7.31		7.25		6.01		4.76		4.12		4.55		4.24		3.97		4.69		5.20		5.88		6.22		2.10
SKEW	-0.55		-0.74		-0.21		0.32		-0.09		0.56		-1.12		0.34		-0.54		-0.63		-0.62		-0.63		0.24
MAX	51.58		56.52		62.52		73.90		78.35		96.45		97.03		96.35		86.93		74.42		62.56		51.84		68.23
MIN	18.55		18.32		37.65		49.61		59.81		68.57		74.23		83.06		60.67		49.93		29.38		20.52		59.48
YRS	61		59		61		59		57		62		64		61		60		59		60		59		44