FONTENELLE DAM, WY

Average of Average Temperature (Degrees Fahrenheit)

(483396)

File last updated on November 7, 2025
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
1963	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	66.23	a	65.69		58.69	a	48.74		31.21	b	20.36	b	48.49	f
1964	15.73		16.50	a	24.95		-----	z	-----	z	-----	z	67.96	c	62.72	a	53.57		43.97		27.18		19.02		36.84	c
1965	19.44		22.68		23.71		41.13		47.02	a	56.15		64.89		61.63		47.25		45.62	c	33.72		16.90		40.01
1966	11.03		12.12		29.24		37.08		51.31		56.48		68.13		62.76		56.12		38.63		32.15		13.24		39.02
1967	20.87		20.11		30.81		35.98	a	46.92		55.03		65.23		65.06		56.53		43.65		28.63		13.84		40.22
1968	14.32		22.91		32.94	f	36.26	e	47.76	b	59.20		65.12	f	60.72	m	50.44	d	41.90	f	25.48	j	13.04	h	38.48	f
1969	17.95	l	11.83	j	15.32	k	41.84	h	52.76	j	55.26	i	64.55	j	65.64	j	55.33	d	36.48	f	29.18	m	21.43	j	55.33	k
1970	19.71	j	26.68	i	25.58	g	32.95	h	48.88	k	57.25	h	64.95	i	67.02	j	48.92	e	36.45	a	29.33		12.47		31.79	h
1971	19.48	a	22.86		26.48		37.45		47.90		57.27		64.16		66.85		48.65		39.08		20.68		8.80	a	38.31
1972	13.94		17.87	b	36.15		40.07		49.08		59.70		-----	z	64.95		52.55	b	-----	z	23.30		11.85		36.95	b
1973	5.26	b	-----	z	22.77		34.67		48.89		56.58		63.50		63.40		50.98		42.42		25.58		18.50		39.32	a
1974	11.92		-----	z	34.90		40.43		-----	z	60.77		63.98		60.32		51.53		42.22	a	-----	z	17.66		42.64	c
1975	16.35		21.88		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	39.79		26.26	a	21.94		25.24	g
1976	17.21		13.91	a	23.16		38.83		50.45	a	54.52		65.39		58.53		52.27		36.68		27.02	a	17.71		37.97
1977	12.58		22.86		22.44		39.78	a	44.10		62.69	a	65.21		61.55		52.33	a	40.92		27.39	b	22.15		39.50
1978	16.17	b	15.75	b	31.20	a	38.45		42.90		53.92		62.65		57.32	a	48.35		43.21	b	22.02	c	7.19		36.59
1979	0.26	b	11.57		24.42		37.78		47.00		55.52		64.44		62.31		54.36	a	42.27		18.95		15.95		36.24
1980	10.74		13.66		23.74		37.72		47.74		56.45		64.42		60.39		51.85		40.23		26.00		25.18		38.18
1981	19.87		23.52		32.71		41.85		48.03		57.59	a	64.19		64.11		54.77		37.42		30.15		21.92		41.34
1982	11.66		14.65	a	28.31		32.67	a	47.32	a	55.88		62.70	a	64.44		51.08		37.52		22.95	b	13.55		36.89
1983	19.68		19.14		29.94		32.85		42.15		53.23		60.55		65.21		52.10		40.60	a	24.16	a	5.29	b	37.07
1984	2.82		6.24		21.39		32.91	a	48.15		54.98	a	65.42		63.85	a	50.00	a	34.05		24.19	a	9.42		34.45
1985	6.08		10.92	b	24.13		41.23		49.93	b	58.55	a	67.44		59.62	a	47.40		37.47		19.35		8.24		35.86
1986	10.52	a	20.20	a	34.66		38.48		45.10	a	60.38		60.94		62.98	a	47.59	a	40.52	c	27.52	a	16.44		38.78
1987	8.21	b	20.88		27.85		42.35		51.02	a	57.30	b	61.78	a	59.68		53.55		42.17	d	27.43		14.98	b	38.93
1988	12.21	c	20.46	a	26.84	b	38.87		47.75	a	61.98		66.56		61.05		50.40	a	47.15		25.50	a	13.82	a	39.38
1989	14.65	a	6.52		32.19		39.98		46.69		55.31	a	68.50		61.22	a	51.78		41.07	b	27.77	j	16.20	k	41.79	b
1990	18.93	j	22.08	c	33.45		44.18		46.31		58.83		67.31		62.56		56.27		35.88	a	25.53		9.06	g	45.24	b
1991	9.91	d	26.21		29.08		36.37		46.18		55.75		61.92		60.11		50.37		37.35		24.11	c	8.17	a	37.13
1992	7.78	h	21.25	i	37.23	a	43.80	h	53.07	i	59.15	d	59.82	c	58.96	e	42.98	e	34.74	h	13.86	i	-1.94	g	51.63	g
1993	0.81	g	-3.89	f	18.02	j	26.95	h	40.67	h	46.50	d	52.82	c	55.02	g	44.77	j	36.00	h	17.43	h	8.94	e	36.09	i
1994	16.62	j	12.64	g	30.85	g	36.90	f	48.48	j	55.98	b	63.02		61.71		51.92	f	37.39	h	12.43	j	14.30	d	48.75	h
1995	8.97	n	20.86	g	26.54	g	30.19	d	41.52	g	53.93	b	59.17	d	61.67	h	50.86	h	36.50	k	32.84	k	20.77	g	47.76	i
1996	16.25	o	20.29	j	25.68	k	34.02	j	42.08	g	56.50	h	61.54	f	59.08	f	44.92	j	35.60	j	25.40	d	15.54	e	20.47	j
1997	11.06	f	10.42	b	24.46	e	28.12	e	44.76	d	53.28	e	56.06	e	57.28	a	47.62		33.02		19.14	a	2.66		34.26	a
1998	9.89		11.10	b	17.11	c	30.78	a	41.42		43.84	a	60.90	a	55.71		48.64	a	32.55	b	19.67		8.10	a	31.64
1999	13.53		13.93	a	23.53	a	27.32		37.31	b	47.61	b	57.03		55.98	b	44.00		35.23		24.83		14.26		32.88
2000	14.40	a	19.74	d	22.14	c	34.74	a	42.38	c	49.80		60.50	f	60.61		43.81	c	31.31		5.50	d	6.19	b	30.06	a
2001	4.82		9.34	c	23.91	h	30.88		41.50		48.81	a	57.69		57.21		47.05	a	32.10	a	18.63		0.45	a	31.68	a
2002	6.55	b	5.57	a	14.84		28.48	i	37.20	h	50.08	f	61.34	f	61.04	d	52.56	e	36.90	f	25.43	h	9.92	g	28.11	g
2003	14.90	g	3.95	h	21.48	h	30.45	h	43.67	g	50.75	d	63.25	a	59.38	e	44.78	g	38.42	f	14.11	h	12.98	e	46.59	h
2004	-0.26	j	3.35	l	24.78	h	36.35	j	43.50	h	54.86	h	63.34	c	59.10	g	51.33	d	41.68	c	27.35		21.33	a	41.01	g
2005	14.58		10.69	a	28.48	f	37.93	g	47.02	h	54.22	e	66.38	c	61.81	d	50.48	g	40.40	g	28.96	g	15.33	g	41.54	g
2006	18.57	j	16.53	j	27.07	h	39.75	f	48.68	i	60.98	g	67.70	d	60.93	d	51.04	e	38.44	f	26.80	g	16.09	i	59.89	i
2007	5.90	j	24.00	h	35.65	g	40.04	g	48.50	i	63.95	s	69.71	g	64.85	d	53.44	e	41.90	e	29.62	f	11.80	h	53.40	i
2008	2.88	o	14.32	g	21.27	g	30.03	o	44.50	j	53.93	g	66.04	g	62.15	g	52.32	b	40.19	g	31.59	g	17.93	h	52.32	k
2009	22.33	j	22.24	g	27.85	h	38.06	f	47.92	f	53.95	i	64.41	n	61.21	e	56.69	i	36.34	i	29.54	f	-----	z	61.21	k
2010	16.91	i	18.23	f	30.53	o	35.52	g	42.12	k	58.25	v	-----	z	-----	z	55.20	j	43.43	j	29.23	j	20.34	l	-----	z
2011	10.56	m	-----	z	28.42		36.10	e	43.88	a	55.14	a	65.48		66.43	a	56.61	b	43.41	c	22.80	g	13.79	b	45.47	c
2012	22.37	a	21.63	c	35.86	c	42.65		49.59	c	60.62	a	69.15	a	67.90	b	56.40	d	43.27		33.52		16.75	a	43.31
2013	11.34		20.36		32.15	a	36.02	a	50.68		61.05		68.92		66.72	a	56.79	b	40.34		29.52		15.52	a	40.78
2014	22.13	a	26.50	c	34.23		38.57	b	51.02		57.05		67.63		62.66		56.15		46.05		28.83		23.76		42.88
2015	27.52	a	30.39		37.45		40.85		48.40		63.68		62.79		63.84		56.97		48.35		25.43		14.76		43.37
2016	13.03		26.78		32.40		41.75		47.15		62.35		65.39		63.18		54.37		44.16		32.55	b	16.74		41.65
2017	6.71		20.46	a	35.11		38.82		50.05		60.27		68.81		64.16		53.37		39.32		33.10		24.55		41.23
2018	24.56		22.39	a	31.89		40.28		51.40	a	59.15		67.34		62.45		54.73		39.29		26.27		12.47		41.02
2019	11.89		12.36		22.48		40.28		44.92		54.72		65.37		63.63		53.40		32.18		26.93		7.15		36.28
2020	15.27		9.84		29.19		37.20		48.68		55.95		64.02		65.47		52.43		41.50		26.85		16.56		38.58
2021	18.26		18.16		30.92		36.90		48.56		63.95		69.65		62.52		54.80		41.61		34.45		21.90		41.81
2022	15.37		17.57		30.26		36.10		46.11		57.45		68.16		67.29		58.38		42.02		20.70		14.07	a	39.46
2023	5.71		5.23		12.87		26.98		51.58		56.63		66.74		64.26		54.92		42.03		30.23		18.24		36.29
2024	18.02		23.78		30.74		40.53		45.58		62.00		66.06		64.50		57.40		45.39		18.58		19.27		40.99
2025	11.18		24.39		32.66		39.80		50.48		60.88		66.21		64.87		57.70		42.85		42.80	y	-----	z	45.10	b
Period of Record Statistics
MEAN	13.51		17.47		28.23		37.16		47.10		56.58		64.36		62.36		52.30		40.30		25.73		14.59		38.73
S.D.	5.85		6.35		5.82		4.18		3.18		4.34		3.59		2.88		3.76		4.26		5.31		5.70		2.82
SKEW	0.05		-0.25		-0.57		-0.82		-0.83		-0.74		-1.03		-0.34		-0.48		-0.32		-1.12		-0.30		-0.47
MAX	27.52		30.39		37.45		44.18		51.58		63.95		69.65		67.90		58.69		48.74		34.45		25.18		43.37
MIN	0.26		5.23		12.87		26.98		37.31		43.84		52.82		55.71		42.98		31.31		5.50		0.45		31.64
YRS	45		45		45		45		43		50		51		53		54		48		45		49		33