WILLOW RESERVOIR, WI

Average of Maximum Temperature (Degrees Fahrenheit)

(479236)

File last updated on April 17, 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
1934	-----	z	-----	z	-----	z	49.00		76.16		82.23		84.32		76.03		67.30		57.71		42.47		23.97	a	62.13	c
1935	22.13		28.32		39.43	a	52.20		64.42		71.50		86.58		77.87		67.77		54.97		35.68	b	28.97		52.49
1936	19.61		15.76		37.52	b	46.77		72.81		76.80		90.03		79.35		73.93	a	51.29		34.93		29.55		52.36
1937	20.55		23.64		33.26		45.63		67.42		74.20		82.03		82.67	a	68.55	a	49.52		36.71	b	23.77		50.66
1938	20.14	b	29.96	c	44.10	a	53.14	b	63.38	b	72.83	a	76.61		79.41	d	66.62	d	60.90	a	40.00	c	26.23	a	52.78
1939	27.55	b	21.88	b	37.30	d	50.42	d	72.07	c	73.46	f	79.93	a	78.71		79.38	a	52.97	a	43.00	e	37.88	f	54.32	b
1940	17.00		28.52	d	29.70	a	48.07		60.42		73.47		79.74		73.13		70.20		57.43	a	35.50		27.61		50.07
1941	26.37	l	25.71		33.03	a	60.07		70.16		76.50		79.77		75.55		69.00		55.10	a	41.17		32.17	b	56.20	a
1942	25.10	a	24.65	b	37.97		59.90	a	63.70	d	72.13		75.94		76.00	a	63.70		58.45		39.43		20.10	a	51.42
1943	18.26		27.18		28.90	a	46.53		62.52	b	75.41	a	82.03		76.71		63.76	a	57.29		32.40		28.32		49.94
1944	31.13	a	26.18	a	29.84		47.33		68.45		76.73		78.16		79.26		67.03		59.03		43.50		23.52		52.51
1945	17.97		26.54		47.74		51.20		59.81		68.77		76.16		76.81		68.03		55.03		36.67		21.33	a	50.50
1946	24.52		23.71		48.52		55.47		65.13		73.57		80.03	b	76.07	b	69.04	e	60.15	d	39.92	e	26.97		53.59
1947	27.16		22.00		32.97		46.60		58.93	a	71.57		80.06		85.55		70.17		67.61		33.53		27.23	a	51.95
1948	19.73	a	24.79		36.29		57.93		67.94		74.93	a	81.74		81.26		76.90		59.48		40.53		27.40	k	56.50	a
1949	26.68		26.11		-----	z	57.34	a	76.50	y	76.40		80.81		79.35		65.30		60.19		40.37		28.55		54.11	b
1950	22.58		26.36		31.97		40.47		62.67	a	72.30		72.97		73.52		67.20		61.74	d	35.13		22.45		49.11
1951	21.00		26.93		32.52		48.70		70.74		71.77		77.42		72.06		64.03		55.42		32.40		23.93	a	49.74
1952	26.80	a	32.28		34.48		58.24	a	67.58		76.73		79.55		75.61		71.40		53.71		43.53		32.06		54.33
1953	27.10	a	27.57		37.77		46.87		70.06		78.00		79.77		78.33	a	68.86	a	68.79	g	47.43		28.23	i	56.18	b
1954	21.93	d	38.96	a	35.71		56.14	a	59.97		77.50		80.63	a	74.84		64.60		53.48		41.80		27.16		52.73
1955	21.03		24.21		33.97		60.30		71.65		74.60		84.77		80.33	a	69.97		57.94		33.77		22.03	a	52.88
1956	26.68		26.28		33.97		49.10		66.43	a	78.40		74.03		75.19		65.97		64.84		38.87		28.94		52.39
1957	16.42		28.04		38.00		54.17		67.39		74.37		81.48		77.16		67.70		56.45		37.24	a	28.03		52.20
1958	25.90		22.68		37.87		56.43		67.03		71.57		77.03		77.39		67.90		57.35		41.00		18.74		51.74
1959	16.19		23.79		37.10		52.23		71.06		76.60		79.32		79.68		69.77		50.71		30.17		32.29		51.58
1960	23.03		27.31		30.81		52.40		64.52		73.07		79.23		78.94		68.47		57.13	a	41.57		24.94		51.78
1961	22.29		33.79		40.19		48.37		64.39		76.73		78.61		79.26		67.27		58.94		38.60		25.42		52.82
1962	18.00		21.57		37.97		51.67		68.45		75.33		76.39		77.58		64.47		57.68		38.67		24.61		51.03
1963	10.94		19.18		40.35		56.73		64.71		78.47		81.84		76.10		69.33		67.32		44.27		18.35		52.30
1964	28.10		30.00		33.68		54.10		72.34	b	75.86	a	82.00	a	73.21	b	65.03		54.84		42.37		21.35		52.74
1965	18.30	a	22.11		28.81		47.63		70.29	j	73.57		75.84		74.87		60.52	a	56.61		37.87		29.84		47.81	a
1966	11.83	m	26.00		39.35		47.03		60.58		77.67		82.39		71.03	a	68.90		55.65		36.13		24.77		53.59	a
1967	24.70	a	20.04		37.77		51.80		60.42		75.03		76.68		74.42		68.83		53.10		34.00		26.90		50.31
1968	21.68		23.38		45.77		56.47		62.81		72.97		77.81		77.42		66.80		57.29		38.00		24.00		52.03
1969	20.35		28.43		33.65		56.43		67.71		66.13		77.74		81.42		68.83		51.29		38.33		25.52		51.32
1970	16.00		25.71		34.29		53.47		65.68		77.73		82.74		80.32		68.87		57.61		36.47		25.16		52.00
1971	14.03		24.57		32.52		52.77		63.77		78.60		75.32		75.13		69.10		60.61		37.53		26.39		50.86
1972	17.74		20.59		33.06		47.57		72.77		75.07		76.71		76.68		64.07		48.32		33.63		17.84		48.67
1973	23.13		26.86		42.90		47.20		57.32		73.37		77.29		76.55		65.50		59.68		36.80		22.55		50.76
1974	17.68		21.71		33.06		50.00		59.45		69.67		80.03		74.00		60.47		52.87		39.33		29.00		48.94
1975	22.19		23.57		31.74		44.33		69.65		71.30		79.35		76.48		62.20		58.00		44.27		23.97		50.59
1976	16.55		30.34		33.68		54.10		62.71		78.43		81.77		78.48		67.30		49.68		30.61	b	15.52		49.93
1977	9.03		25.57		41.52		56.50		76.32		72.77		80.00		70.65		63.57		55.00		37.57		21.48		50.83
1978	15.84		19.79		34.58		47.97		66.97		71.33		73.29		75.48		69.33		52.87		37.63		19.48		48.71
1979	9.16		16.57		33.42		46.43		57.94		71.73		77.94		72.65		67.57		49.26		36.10		28.55		47.28
1980	18.61		21.21		31.06		52.57		70.61		71.80		79.13		74.55		58.19	n	48.45		38.20		21.42		47.96	a
1981	21.90		26.79		37.42		52.93		64.03		71.10		76.74		76.00		64.77		49.32		43.13		24.10		50.69
1982	11.19		26.15	b	32.26		45.30		69.23		68.33		78.35		72.55		62.77		55.50	a	35.97		28.74		48.86
1983	23.83	a	29.79		36.03		45.13		58.10		73.30		82.39		80.68		67.27		54.23		43.38	n	-----	z	55.07	b
1984	13.25	g	-----	z	30.90		56.04	c	63.10		76.04	c	79.13	a	79.03	b	65.17		57.52		37.32	b	25.86	b	57.01	b
1985	18.48		25.04	c	42.32	c	57.00	d	70.45		73.85	j	77.94		73.81		66.87		55.07	q	31.18	b	15.10		47.82	b
1986	22.39		23.21		37.81		56.60		68.87		73.77		77.84		71.65		64.47		53.97		34.67		28.13		51.11
1987	26.03	a	35.46		44.48		60.80		66.74		73.80		75.81		71.90		69.97		47.87		41.40		29.26		53.63
1988	17.48		21.00		34.23		52.63		71.87	a	79.10		82.45		77.45		65.77		47.20	a	36.20		25.67	a	50.92
1989	25.94		18.04		30.26		46.97		64.06		70.57		79.29		75.55		67.17		56.19		32.10		14.13		48.35
1990	29.55		26.64		39.19		53.30		61.07	a	71.47		75.29		73.92	s	61.94	m	50.79	b	42.00		24.13		47.34	b
1991	16.68		28.04		36.52		52.80		65.35		-----	z	74.23		77.07	a	61.39	b	52.10		31.43		23.39	m	49.56	b
1992	24.00		29.24		34.48		43.80		64.84		67.93	a	70.48		71.35		62.83		53.13		33.14	a	24.68		48.33
1993	21.29		25.14		34.06	m	44.83		61.35		68.00		73.84		74.58		59.60		50.23		33.33		25.16		48.85	a
1994	10.48		18.96		36.95	k	49.80		65.00		74.40		73.68		71.58		68.23		57.56	m	41.46	f	30.87		51.45	c
1995	22.68		23.68		38.35		43.27		61.74		78.59	a	76.55		77.10		64.93		53.07	a	27.00	n	21.45		51.04	a
1996	19.29		22.79		27.84		43.53		59.35		71.30		71.87		74.87		64.60		54.97		31.07		23.23	a	47.06
1997	17.19		27.07	a	30.21	l	47.33		55.87		74.63		73.81		70.58		66.50		53.84		33.70		31.27	a	50.16	a
1998	23.97		37.29		29.37	l	57.93		72.81		71.00		78.77		78.97		74.90		56.68		40.53		32.73	a	56.87	a
1999	18.61		31.50		38.03		54.73		67.13		72.27		79.32		72.81		65.90		52.84		46.73		27.32		52.27
2000	22.48		32.21		44.26		50.57		65.97		70.43		75.10		75.58		66.70		59.07	a	37.40		16.52		51.36
2001	27.32		22.18		35.10		52.43		66.06		72.70		78.06		79.39		66.63		54.48		48.87		31.61		52.90
2002	29.45		33.29		29.78	d	46.83		57.74		72.93		81.55		75.58		68.55	a	50.43	h	33.00	l	29.42		52.51	b
2003	20.03		21.46		36.10		49.67		63.55		71.37		77.71		79.61		68.50		54.65		36.21	a	29.57	a	50.70
2004	15.47	a	27.55		36.97		50.50		59.48		69.60		75.16		70.48		72.70		55.19		44.31	q	25.27	a	50.76	a
2005	19.65		30.68		34.89	c	56.83		59.77		78.13		80.42		77.68		74.03		58.29		39.33		24.13		52.82
2006	30.84		24.71		38.68	l	58.03		63.77		76.10		83.97		77.16		65.13		49.58		40.57		30.04	d	54.54	a
2007	23.81		17.32		37.76	j	49.87		68.42		76.57		77.14	c	75.97		70.17	a	57.94		36.73		22.53	a	52.41	a
2008	20.52		21.00		32.16		47.69	a	61.19		70.80		77.58		77.37	a	68.97		53.32		36.62	a	20.37	a	48.97
2009	14.03		26.41	a	36.58		50.00		63.35		71.80		71.65		73.29		72.80		46.58		45.97		22.45		49.58
2010	21.90		27.82		45.62	j	60.40		67.97		71.33		77.68		77.58		62.43		57.74		40.63	c	22.71	c	53.47	a
2011	16.73	a	24.36		34.03		46.53		60.84		71.90		80.26		76.13		65.00	a	57.87		41.22	c	28.81		50.31
2012	25.48		31.24		47.50	k	53.57		68.87		75.52	c	82.73	a	76.06		67.47		51.84		39.54	d	28.90		54.66	a
2013	22.27	a	21.89		31.38	b	41.07		63.55		70.52	c	78.48	d	76.46	e	69.89	b	50.81	e	35.89	c	15.57	a	48.15
2014	11.39		14.96		28.00	c	43.83		63.83	b	73.65	m	72.80	a	72.32	f	64.50		50.81		28.72	a	26.10		40.49	b
2015	19.17	b	13.04		36.55		52.03		64.39		70.59	a	76.10		71.39		71.07	a	54.60	a	45.61	b	33.00	g	52.23	a
2016	19.90	b	26.66		41.65	h	47.00	b	64.71		72.90	a	76.07	a	75.48		68.07	c	58.21	g	47.15	c	23.13		52.11	b
2017	22.76	b	31.61		37.00	p	51.88	f	59.35		72.13		76.61		70.67	g	69.67		55.97		34.17		20.13		49.16	c
2018	21.16		21.96		36.65	e	40.43		73.03		73.93		77.26		74.61		67.20		46.68		29.40		28.68		49.25
2019	18.00		19.36		33.35		47.10		58.45		72.70		78.13		71.87		65.97		49.81		30.40		26.32		47.62
2020	25.19		26.45		38.42		46.70		61.39		74.30		79.68		75.97		63.63		44.61		44.13		28.00		50.71
2021	25.00		18.39		43.61		50.87		61.84		77.27		77.84		75.94		69.27		60.35		39.43		28.77		52.38
2022	15.97		21.46		33.90		42.87		65.35		73.70		76.48		74.13		67.80		54.90		41.47		22.32		49.20
2023	25.29		28.18		34.90		48.47		67.58		76.60		76.74		75.94		68.90		54.35		40.17		36.10		52.77
2024	23.32		37.76		41.10		51.24	m	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	34.06	i
Period of Record Statistics
MEAN	20.90		25.37		35.92		50.83		65.21		73.78		78.40		76.14		67.37		54.94		38.10		25.24		50.92
S.D.	4.87		4.96		4.52		5.01		4.58		3.02		3.33		2.95		3.42		4.40		4.50		4.43		1.71
SKEW	-0.28		0.25		0.63		0.09		0.24		0.11		0.38		0.23		0.56		0.23		0.11		-0.35		-0.34
MAX	31.13		38.96		48.52		60.80		76.32		82.23		90.03		85.55		79.38		67.61		48.87		36.10		54.33
MIN	9.03		13.04		27.84		40.43		55.87		66.13		70.48		70.48		59.60		44.61		28.72		14.13		47.06
YRS	87		89		79		89		88		86		90		87		88		85		85		84		61