FONTENELLE DAM, WY

Average of Minimum Temperature (Degrees Fahrenheit)

(483396)

File last updated on November 10, 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	46.47	a	47.77		41.10		29.81		16.00		6.52		31.28	f
1964	1.52		0.00		11.35		26.73		33.94		42.37		47.26		42.68		32.80		23.16		13.80		8.00		23.63
1965	8.48		10.32		10.26		28.53		32.87	a	41.63		46.94		44.06		31.37		24.07	b	21.00		3.23		25.23
1966	-4.10		-3.71		14.26		19.87		32.65		37.40		47.87		43.52		38.10		21.65		17.97		-0.32		22.09
1967	9.94		6.46		17.90		19.57		31.35		40.37		46.13		45.23		38.00		25.52		13.90		1.97		24.69
1968	0.06		9.93		18.88	f	22.08	e	33.14	b	43.47		45.40	f	43.79	l	31.85	c	23.67	d	8.90	j	-1.12	g	23.46	e
1969	5.84	l	-6.16	i	-1.00	k	25.41	h	32.67	j	38.62	i	43.00	j	43.76	j	35.81	d	21.16	f	9.28	l	4.10	j	35.81	k
1970	6.33	j	9.53	i	10.21	g	17.41	h	30.40	k	39.41	h	44.68	i	46.90	j	28.44	e	20.55		19.33		-0.06		17.06	h
1971	10.61		12.50		14.48		22.43		32.84		39.33		45.13		47.55		28.47		23.35		8.80		-4.48		23.42
1972	3.94		4.93		23.35		25.43		32.23		43.97		-----	z	47.06		34.90	a	-----	z	13.00		-1.58		22.72	b
1973	-9.47	a	-----	z	9.55		22.77		32.61		38.10		45.13		44.52		33.33		24.13		12.90		4.84		23.49	a
1974	-1.65		-----	z	23.87		25.20		-----	z	42.20		45.16		38.84		28.83		21.83	a	-----	z	4.00		25.37	c
1975	3.03		9.18		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	22.35		12.69	a	8.65		11.18	g
1976	3.03		-2.64	a	11.32		24.90		33.87		36.10		45.26		38.29		32.03		14.58		6.52	a	-1.58		20.14
1977	-5.06		2.61		5.48		20.38	a	27.03		43.73		47.77		44.90		32.52	a	21.74		12.64	b	10.16		21.99
1978	2.72	b	-0.15	b	17.47	a	24.03		26.71		35.30		41.03		35.47	a	27.00		23.38	b	6.48	a	-6.48		19.41
1979	-14.83	a	-2.64		11.68		22.87		30.42		36.13		44.68		44.65		31.97	a	21.52		2.37		-1.00		18.98
1980	-4.06		-3.38		10.29		23.27		35.23		38.53		45.94		41.26		32.93		21.32		9.57		10.23		21.76
1981	2.81		7.61		18.87		26.83		34.84		40.69	a	44.45		43.65		34.23		21.29		13.47		6.81		24.63
1982	-2.61		-0.70	a	15.03		18.17	a	32.13	a	38.83		45.57	a	45.65		35.37		21.84		7.71	b	0.35		21.45
1983	5.68		3.18		18.06		20.50		27.48		36.43		41.16		47.68		32.80		21.00	a	9.83	a	-8.31	b	21.29
1984	-12.97		-11.03		7.45		19.79	a	32.90		37.86	a	47.52		45.93	a	32.24	a	17.65		10.59	a	-5.58		18.53
1985	-10.03		-5.77	b	9.74		25.23		32.66	b	40.66	a	49.77		38.57	a	30.40		18.13		6.17		-6.81		19.06
1986	-5.77	a	8.93	a	20.10		25.30		28.30	a	41.63		43.77		43.73	a	31.31	a	24.21	c	12.55	a	-0.87		22.77
1987	-9.70	a	5.25		14.32		23.17		35.40	a	39.93	b	44.43	a	40.90		32.50		21.78	d	12.43		-0.43	a	21.67
1988	-3.25	c	3.75	a	12.28	b	20.57		30.13	a	41.93		45.84		38.39		29.90	a	28.10		11.93	a	-1.32		21.52
1989	-2.00	a	-7.82		18.74		22.73		28.61		38.00	a	50.00		42.63	a	33.03		22.34	b	12.00	j	-1.75	k	24.63	b
1990	3.48	j	6.48	c	19.42		28.50		31.58		40.87		49.97		43.81		38.77		18.57	a	13.07		-4.71	g	29.10	b
1991	-4.29	c	12.43		15.42		21.83		31.10		39.87		42.58		42.19		33.33		19.61		10.97		-6.39		21.55
1992	-8.46	e	9.65	i	22.77	a	26.50	h	37.14	i	43.65	d	42.32	c	39.81	e	24.88	e	17.39	h	-0.09	h	-17.85	d	21.02	e
1993	-12.92	f	-19.22	e	5.38	j	14.50	h	26.17	h	32.96	d	34.43	c	35.92	f	25.80	j	20.79	g	1.22	g	-5.50	e	10.67	h
1994	2.86	i	-3.67	g	16.36	f	20.71	f	30.43	j	36.18	b	43.19		40.87		32.42	f	22.50	g	0.82	h	1.26	d	30.38	h
1995	-4.76	n	8.05	f	14.92	g	17.19	d	29.32	f	38.62	a	41.19	d	41.70	h	33.64	h	18.67	j	19.30	j	8.71	g	32.33	i
1996	0.39	m	7.05	j	11.86	i	19.20	j	29.08	g	37.95	h	40.81	e	39.12	f	27.70	j	20.00	j	13.31	d	5.19	e	19.77	i
1997	-0.44	f	-3.04	b	10.38	e	15.72	e	28.89	d	36.48	e	38.42	e	41.13	a	32.00		17.23		6.60		-9.61		19.47	a
1998	-1.55		-0.54	b	4.50	c	18.14	a	28.00		31.66	a	43.40	a	38.61		32.43		19.93	b	8.47		-4.37	a	18.22
1999	2.84		2.93		11.00	a	16.17		23.86	b	32.43	b	39.84		38.34	b	26.97		13.97		5.53		-0.45		17.79
2000	2.93	a	7.76	d	8.14	c	18.27		27.36	c	31.90		42.12	f	42.58		27.46	b	17.61		-8.19	d	-5.80	a	15.46	a
2001	-9.26		-3.15	b	13.00	h	17.67		24.65		31.38	a	39.52		38.97		28.72	a	16.00	a	4.07		-13.65		15.90	a
2002	-6.77	a	-10.85	a	3.26		13.86	i	21.79	g	32.38	f	43.00	f	42.22	d	35.44	e	21.19	e	12.41	h	-3.96	g	14.08	f
2003	2.75	g	-11.19	g	10.79	g	15.32	h	28.79	g	35.22	c	44.57	a	41.88	e	26.96	g	17.85	e	4.28	e	1.04	c	24.14	f
2004	-13.57	h	-9.94	k	10.61	h	22.95	i	29.12	g	41.56	e	47.11	c	42.92	g	34.42	d	29.93	c	16.10		9.53	a	29.78	f
2005	2.42		-4.96	a	17.38	e	24.26	g	34.57	h	37.96	e	47.14	c	43.85	d	31.91	g	23.64	f	12.48	e	0.77	e	19.63	d
2006	7.74	h	1.80	h	15.43	h	23.38	f	31.36	i	43.13	g	49.52	d	42.33	d	35.54	d	24.19	e	14.04	e	2.79	g	33.12	g
2007	-8.54	g	12.76	g	19.96	f	23.83	f	31.74	h	43.18	s	51.67	g	47.56	d	35.96	d	25.85	e	11.80	e	-2.16	f	30.29	h
2008	-12.10	j	1.09	f	9.73	e	16.62	n	31.48	j	38.43	g	46.50	g	42.79	g	35.07	b	24.84	f	17.79	f	4.16	f	22.40	j
2009	5.17	h	8.90	g	13.29	g	24.68	e	32.92	f	40.43	i	47.82	n	43.54	e	39.19	i	23.39	h	11.68	e	-----	z	26.63	i
2010	3.09	h	5.00	f	17.35	n	22.91	g	31.45	k	47.38	v	-----	z	-----	z	36.40	j	27.38	j	15.62	i	8.18	i	-----	z
2011	0.00	k	-----	z	18.77		26.30	c	32.53	a	40.10	a	49.48		49.20	a	39.04	b	29.43	c	10.00	f	-0.21	b	31.63	c
2012	9.30	a	10.96	c	21.36	c	27.20		34.14	c	42.17	a	53.03	a	51.52	b	38.54	d	29.32		20.77		5.90	a	28.68
2013	-2.74		7.89		20.20	a	23.97	a	37.84		43.43		52.35		50.37	a	45.36	b	27.84		17.17		3.73	a	27.28
2014	9.57	a	16.54	b	23.84		24.64	b	37.39		42.60		51.74		50.10		41.47		30.52		16.57		13.87		29.90
2015	17.13	a	18.07		21.94		26.83		37.42		47.40		46.94		47.55		38.77		34.77		11.67		2.87		29.28
2016	0.35		15.97		20.90		30.37		34.42		44.63		47.16		45.26		38.80		29.81		19.62	a	5.00		27.69
2017	-4.55		10.22	a	25.48		26.47		36.00		44.37		52.00		47.61		38.53		23.68		20.63		10.81		27.60
2018	12.45		12.37	a	20.26		25.87		35.70	a	40.23		47.71		43.52		32.80		24.84		12.77		-1.61		25.57
2019	-2.00		-1.21		10.19		27.80		30.77		36.60		46.65		43.45		36.70		15.00		12.33		-5.61		20.89
2020	4.00		-6.17		16.84		21.17		30.90		39.03		43.16		44.19		30.97		22.35		9.90		1.45		21.48
2021	4.42		5.82		16.68		18.77		31.65		45.13		51.10		44.26		34.83		28.84		20.40		8.65		25.88
2022	-0.16		1.36		15.29		21.50		30.94		41.07		49.35		51.19		39.87		24.13		5.93		0.52		23.42
2023	-6.00		-8.54		-1.29		15.90		37.32		43.17		49.03		47.94		37.47		24.00		15.30		2.74		21.42
2024	4.32		12.48		18.16		25.30		30.84		44.83		48.26		47.26		38.37		25.35		5.03		6.16		25.53
2025	-3.84		13.21		20.77		24.07		33.77		42.50		47.16		47.90		41.37		26.68		22.22	u	-----	z	29.36	b
Period of Record Statistics
MEAN	-0.29		3.12		15.05		22.87		31.92		39.67		45.89		44.00		34.17		23.03		11.68		0.67		23.07
S.D.	6.93		8.28		6.06		3.69		3.36		3.79		3.80		3.69		4.28		4.48		5.51		6.44		3.30
SKEW	0.21		-0.35		-0.46		-0.20		-0.35		-0.43		-0.51		-0.02		0.17		0.19		-0.77		-0.40		0.40
MAX	17.13		18.07		25.48		30.37		37.84		47.40		53.03		51.52		45.36		34.77		21.00		13.87		29.90
MIN	-14.83		-19.22		-1.29		15.72		23.86		31.38		34.43		35.47		24.88		13.97		-8.19		-17.85		17.79
YRS	46		46		47		47		44		52		52		53		54		52		50		51		34