SPOONER AG RESEARCH STATION, WI

Average of Minimum Temperature (Degrees Fahrenheit)

(478027)

File last updated on May 6, 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
1894	-----	z	-----	z	-----	z	61.60	y	-----	z	-----	z	66.29	q	-----	z	49.93	a	37.45		15.36	b	18.18	c	30.23	h
1895	-2.00	b	-3.69	b	12.32	c	33.53		43.52		51.90		50.87		52.32		47.97	a	28.17	a	17.48	a	6.36	c	28.23
1896	-2.64	f	1.75	a	8.31	b	30.14	a	46.35		48.10	a	51.26		51.55		35.31	a	19.55		13.83	a	6.10	b	28.39	a
1897	-4.61	c	8.21	d	9.27	a	29.70	c	35.55		44.40		64.50	k	50.68		52.45	a	39.67	a	17.83		-0.55		25.69	a
1898	9.63	a	7.54		23.58		27.17	a	41.06		49.55	a	56.00		52.58		48.07		35.42		18.89	b	-0.83	b	30.72
1899	-4.00	e	-6.42	b	1.30	a	32.57		42.45	b	50.87		54.71		55.23		41.37		38.00		29.05	i	9.75	c	28.71	a
1900	11.40	a	-7.85	a	12.40	a	35.40		41.97	a	53.83		54.45		-----	z	40.54	q	44.71	c	21.26	c	11.47	a	27.90	b
1901	-0.52	h	-3.92	b	15.67	g	30.52	a	38.79	g	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	13.30	j
1902	-----	z	0.89	j	-----	z	28.40		45.54	c	47.63		57.70	a	51.04	c	-----	z	-----	z	24.46	q	1.64	i	46.06	g
1903	-2.75	g	-1.78	e	20.23	e	30.46	b	43.48		-----	z	-----	z	-----	z	-----	z	35.07	c	15.84	k	-3.30	a	20.69	f
1904	-----	z	-11.89	a	14.10	b	25.69	a	41.77	a	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	3.67	g	17.42	h
1905	-8.45		-6.89		19.43	c	26.66	a	35.69	b	47.08	f	52.55	i	51.93	q	48.45	a	30.59	b	21.66	a	9.52		19.63	c
1906	5.50	a	-0.50	b	7.00	c	-----	z	38.84	f	-----	z	-----	z	-----	z	51.43	g	36.23		24.83		8.65		13.62	f
1907	-4.55		1.96		17.94		23.17		32.55		50.50		53.35		53.61		45.50		31.39		22.50		10.87	a	28.23
1908	5.90		9.38		15.52		32.43		40.53	a	51.20		54.89	d	53.06		51.90		38.13		26.33		8.20	a	32.29
1909	4.33	a	6.11		17.19		26.30		39.52		52.90		55.29		58.65		44.73		36.10	a	27.03	a	4.77	a	31.08
1910	2.65		-0.93		29.00	a	34.38	a	39.45		54.17	a	56.61		54.19		46.87		37.90		20.03		4.10		31.54
1911	-1.29	j	7.32		20.52		32.83		46.00		56.36	b	54.35		52.13		45.00		32.87		11.83		15.39		34.05	a
1912	-17.17	a	-2.14		8.38	b	31.86	a	43.39		48.63		57.10	a	51.90		47.03	a	37.29		24.24	a	11.32		28.49
1913	-2.03		-1.59	a	8.90	a	33.47		39.24	b	53.90		54.26		56.13		46.93	a	33.45		27.83	a	18.71		30.77
1914	9.27	a	-8.18		16.10		28.80		45.83	a	52.00		61.32		53.86	b	46.77		40.65		25.23		4.23	a	31.32
1915	1.90		16.04		17.58		40.60		40.55		47.65	g	53.93	d	49.57	c	48.97		38.10		23.04	e	11.32		31.05	a
1916	-2.58		-2.07		8.94		31.10		41.84		49.07		63.10	b	56.35		45.72	a	35.26		20.86	a	-1.20	a	28.87
1917	-7.03		-7.76	c	14.74		28.07		35.69	b	47.41	a	58.48		52.84		45.90	a	28.39		28.17	a	-3.10		26.82
1918	-10.10	a	1.96		22.68		27.87		45.40	a	52.43		55.97	b	55.00	c	39.31	a	38.10	a	28.97	a	20.63	a	31.52
1919	9.90	a	5.48	a	16.03	b	32.07	c	41.55		58.20		59.60	a	54.61		47.93	b	33.14	b	17.70		0.00	b	31.35
1920	-7.65		2.21		16.97	a	24.23		42.10		48.55	a	53.00		46.13		44.79	a	40.29		23.60		14.29		29.04
1921	9.74		11.04		20.84		35.40		44.94		57.21	a	65.29		55.68		50.13		38.37	a	19.27		8.03		34.66
1922	-2.06		-3.57		18.52		31.80		48.94		53.27		54.52		57.00		50.53		37.61		31.97		5.39		31.99
1923	4.37	a	-5.14		6.65		28.67		41.63	a	55.60		60.94		54.07	c	49.61	b	33.35		26.38	a	18.17	b	31.19
1924	-7.94		8.62		17.58		30.17		35.84		47.80		53.97		51.94		43.41	a	42.00		22.17		-2.27	a	28.61
1925	-0.47	a	8.29		20.03		36.03		38.33	a	53.37		56.13		56.34	b	48.77		27.84		20.67		2.81		30.68
1926	0.55		6.08	c	10.10		27.43	b	45.63	a	49.30		56.32		56.00		43.90	a	35.87		17.43		2.65		29.27
1927	-1.00		8.41	a	22.65		32.43		41.03		48.77		55.13		50.61		49.97		36.29		19.77		-4.10		30.00
1928	3.00		6.62		14.13		23.48	a	42.65		46.97		56.37	a	55.55		45.03		38.74		26.90		14.23		31.14
1929	-13.03		-5.07		21.39		32.87		38.45		49.23		56.30	a	52.71		46.00		35.42		19.53		7.97		28.48
1930	-5.65		12.50		16.42		33.30		43.26		54.17		58.32		55.45		44.80		37.16		25.47		11.52		32.23
1931	14.00		17.93	a	19.58		31.97		42.00		57.63		59.48		53.45		53.40		41.74		29.52	a	21.10		36.82
1932	10.00		2.10		7.84		28.97		42.81		53.63		55.35		53.74		41.57		32.52		17.73		1.97	a	29.02
1933	7.35		-4.21		17.00	d	29.13		43.81		57.80		58.03		50.10		48.20		31.74		18.90	a	0.81		29.89
1934	9.23		0.14		12.45		29.53		47.33	a	51.30		54.52		49.21	b	43.23		37.57	a	27.07		-2.68		29.91
1935	-6.87		10.36		20.26		30.80		39.35		49.30		62.45		57.10		44.67		35.29		19.53		9.16		30.95
1936	-6.57	a	-14.79		19.23		25.07	a	45.94		48.07		60.94		56.29		49.77		31.55		18.73		11.03		28.77
1937	-7.52		2.21		12.23		31.63		43.97	a	50.33		58.07	a	60.13		46.03		30.82	c	21.63		3.93	b	29.46
1938	1.97	a	8.86		22.58		32.27		43.26		51.50		58.45		58.03	a	46.57		39.00	b	22.66	a	7.87	a	32.75
1939	8.77		-5.89	a	11.97	a	26.43		46.00		54.13		57.21	b	54.84		47.30		35.45		22.63		17.52		31.36
1940	-4.39		8.03		8.00		27.93		38.73	a	49.13		55.94		55.43	a	48.55	a	38.58		19.03		10.42		29.62
1941	4.97		3.43		11.52		37.60		47.13		53.33		57.94		53.58		50.27		37.87		25.53		16.84		33.33
1942	9.50	a	5.43		24.42		35.70		40.03		52.22	c	54.77		52.96	d	43.89	b	34.94		21.60		5.67	a	31.76
1943	-2.43	a	3.54		9.68		27.40		40.48		55.37		57.81		57.74		40.50	f	32.32		17.73		9.71		28.12	a
1944	14.97		5.93		15.29		27.87		46.29		53.17		55.65		55.74		47.60		33.55		31.40		7.48		32.91
1945	-0.10		3.21		23.55		30.60		35.19		46.03		54.16		52.84		44.63		30.29		21.07		2.90		28.70
1946	2.26		2.11		28.10		32.50		38.00		48.90		55.10		50.00	a	44.70		36.87		20.60		-----	z	32.65	a
1947	-----	z	-----	z	15.65		29.10		36.45		48.67		53.90		61.16		46.53		45.65		17.03		8.87	a	36.30	b
1948	-8.26		-0.31		11.83	b	34.50		38.80	a	49.93		58.03		55.00	a	46.07		33.00	c	26.23		6.58		29.28
1949	6.16		1.68		17.00		30.07		43.30	a	57.58	r	59.43	a	56.47	a	43.26	c	39.45		25.30	c	10.19		30.21	a
1950	-6.00		1.64		11.23		25.20		41.03		51.73		54.00	a	48.97	b	45.25	b	39.00	a	17.97		0.30	a	27.53
1951	-2.74		4.54		10.87		30.23		44.39		48.60		55.94		52.61		43.43		37.13	a	13.60		7.48		28.84
1952	0.90		10.17		12.81		31.80		39.74		53.83		57.43	a	53.65		46.93		27.16		22.30		14.23	a	30.91
1953	5.17	a	2.25		17.68		28.21	a	40.19		55.10		55.17	a	57.94		45.71	b	40.19		26.03		10.23		31.99
1954	-2.06		17.46		13.84		31.30		38.16		55.43		57.58		53.55		47.07	a	35.00		25.93		13.48		32.23
1955	0.13		-1.21		10.35		37.93		45.90		52.80		62.16		58.42		46.79	a	36.39		16.07		-0.57	a	30.43
1956	0.84		-2.48		12.23		27.37		40.87		55.03		53.94		53.77		41.87		40.97		22.13		9.61		29.68
1957	-5.23		3.43		12.58		30.70		40.23		51.13		60.16		55.16		43.93		34.87		24.67		10.74		30.20
1958	9.77		-1.68		17.42		31.83		39.84		47.00		55.23	a	53.35		49.17		38.35		24.10		0.55		30.41
1959	-6.29		-1.18		17.52		30.13		46.06		55.23		57.23		61.00		48.67		34.48		12.03		17.42		31.03
1960	4.23		3.34		4.29		32.77		42.42		48.73		55.06		57.48		48.47		35.52		25.50		4.40	a	30.18
1961	0.19		10.86		23.10	a	27.40		37.97		51.03		54.90		55.41	b	46.57		36.35		23.33		7.13		31.19
1962	-3.77		2.68		18.58		27.90	a	47.39		50.23		52.55		52.65		43.97		37.39		26.53		7.77		30.32
1963	-8.13	a	-2.82		19.29		32.77		40.53	a	52.67		55.94		51.61		46.50		43.81		27.60		-0.39		29.95
1964	8.03	a	5.31		13.70	a	32.93		45.76	b	51.90		56.90		51.55		45.37		34.65		23.47		-1.27	a	30.69
1965	-6.39		-4.64		6.43	a	29.61	b	46.29		50.33		54.26		52.73	a	42.33		35.90		21.21	b	17.26		28.78
1966	-11.90		1.68		21.42		28.80		36.55		53.17	a	58.97	a	53.21	c	44.73		35.10		20.83		6.87		29.12
1967	3.16		-4.61		17.90		31.50		36.42		53.23		54.68		50.83	a	44.00		33.65		19.60		9.00		29.11
1968	-0.52		-1.79		23.97	b	34.20		40.84		52.03		57.17	b	54.77		47.79	a	40.40	a	23.43		6.39		31.56
1969	-0.52		5.48	a	10.97		33.79	b	43.48		45.77		54.87		54.97		44.55	a	32.52		21.43		11.29		29.88
1970	-7.71		-2.57		9.35		30.00		43.65		55.47		59.29		55.23		47.57		38.97	a	22.47		8.32		30.00
1971	-7.06		3.75		13.55		30.67		37.68		55.50		52.77		51.26		47.67		42.45		24.13		6.55		29.91
1972	-9.32		-5.64	a	10.52		27.40		45.81		48.07		55.65		54.84		44.47		32.48		25.50		2.23		27.67
1973	3.00		6.61		28.39		30.43		39.81		53.20		56.68		57.90		46.33		39.94		23.73		5.00		32.58
1974	-1.03		0.54		16.90		30.80		39.18	i	46.96	b	58.17	a	49.74		38.24	a	33.94		24.48	a	12.42		28.29	a
1975	0.07	a	4.57		8.10		25.87		43.39		50.73		56.03		51.45		40.47		36.10	b	24.70		7.97		29.12
1976	-4.81		12.72		16.42		33.63		39.19		52.83		55.45		52.47	a	42.53		27.84		13.40		-6.52		27.93
1977	-11.42		6.50		25.26		36.97		50.13		51.60		57.94		49.00		46.47		33.94		21.77		6.19		31.19
1978	-6.87		-6.14		12.00	a	29.83		44.84		48.90		55.94		55.35		50.17		35.35		18.47		-0.10		28.14
1979	-11.29		-3.96		16.06		28.87		38.10		49.30		56.13		53.97		47.77		33.74		21.97		12.16		28.57
1980	-0.68		-0.59		11.00		31.93		42.45		49.97	a	56.26		56.35		46.10	a	31.97	a	22.87		5.58		29.43
1981	1.81		10.25		20.94		33.10		39.21	b	51.83		57.19		56.87		43.87		34.16		27.20		8.00		32.04
1982	-13.58		1.00	a	15.26		28.10	a	47.63	a	45.63		57.77	a	53.00		47.27		38.81		20.72	a	15.03		29.72
1983	6.35		17.54		24.13		28.13		38.74		52.17		61.23		57.87		48.63		35.52		25.07		-7.19		32.35
1984	-1.81		17.38		12.61		32.28	a	39.81		55.60		57.29		58.81		44.03		41.35		22.77		7.81		32.33
1985	0.10		3.64		23.35		36.87		47.29		48.57		54.29		53.39		48.27		35.97	b	15.83		-5.06		30.21
1986	4.50	a	3.86		22.06		36.83	a	45.50	a	52.70		59.61		53.20	a	48.23		36.11	d	19.77		12.45		32.90
1987	9.48		17.71		26.06		35.17		47.39		54.34	a	61.68		55.55	b	49.20		32.19		27.20		16.29		36.02
1988	-2.58		-1.83		19.80	a	30.77		45.74		54.97		59.16		59.29		48.47		31.06		26.07		7.07	a	31.50
1989	7.52		-4.25		12.94		30.67		42.48		50.93		59.16		56.35		47.07		35.39		-----	z	-2.23		30.55	a
1990	13.87		6.89		22.42		33.57		39.81		54.63		57.03		52.81		48.90		34.19		26.00		6.81		33.08
1991	-1.00		8.04		21.23		34.77		49.26		58.20		58.03		56.06		46.24	a	32.81		16.63		8.74		32.42
1992	10.03		17.72		21.45		31.27		45.48		50.53		52.13		51.32		45.87		34.48		25.33		11.84		33.12
1993	4.00		6.61		16.19		29.90		43.90	a	50.97		57.68		56.42		41.17		33.45		20.66	a	12.81		31.15
1994	-10.93	a	-0.25		21.77		30.53		43.42		53.57		54.90		52.77		50.40		41.19		26.14	a	13.77		31.44
1995	7.57	a	4.36		21.47	a	28.33		41.48		56.07		58.29		61.13		45.27		37.74		16.57		6.81		32.09
1996	-7.16		3.90		11.03		26.24	a	41.10		54.13		55.58		55.19		48.83		37.03		17.37		6.00		29.10
1997	-0.42		8.39		19.19		29.53		38.26		53.67		58.03		53.74		49.53		39.29		21.87		18.71		32.48
1998	10.52		22.71		22.48		35.37		48.58		52.43		57.48		58.42		51.90		40.55		28.87		13.29		36.88
1999	2.81		14.86		19.87		34.63		48.16		55.20		61.68		57.61		48.37		36.03		29.80		13.58		35.22
2000	2.26		14.17		27.65		31.37		46.68		51.73		57.35		57.65		46.07		41.06		26.30		-1.65		33.39
2001	7.39		-0.75		16.13		36.13		46.87		55.40		59.10		58.84		47.03		36.94		34.83		19.03		34.75
2002	13.84		16.96		11.77		32.47		38.19		56.03		60.80	a	57.77		52.13		33.16		22.77		16.74		34.39
2003	3.77		0.68		17.97		31.83		42.39		52.20		57.35		58.58		49.57		37.90		24.10		15.32		32.64
2004	-0.87		11.59		23.19		32.47		42.45		50.73		56.81		51.97		53.87		39.55		28.90		10.74		33.45
2005	4.35		14.36		15.52		35.53		43.19		58.97		60.74		56.10		53.50		40.13		26.47		13.52		35.20
2006	20.84		7.11		22.23		38.93		48.23		53.93		62.61		58.42		45.57		31.61		26.70		19.26		36.29
2007	7.61		-0.46		21.81		30.72	a	47.35		56.97		58.67	a	57.29		48.53		42.13		24.38	a	5.97		33.41
2008	2.58		0.21		13.20	a	30.77		40.06		52.83		58.61		55.16		48.73		36.13		24.10		-1.32		30.09
2009	-12.52		6.43		18.32		32.60		42.42		51.93		52.06		54.00		50.83		33.94		28.97		5.26		30.35
2010	-1.13		0.61		24.16		36.07		45.84		54.30		60.90		60.26		44.13		35.87		23.87		5.32		32.52
2011	-2.65		4.75		14.23		33.13		43.81		53.87		62.71		57.10		47.20		39.77		27.13		15.45		33.04
2012	9.42		16.24		33.55		33.90		48.84		54.93		63.29		55.13		43.53		33.03		23.23		12.16		35.61
2013	3.06		3.11		10.32		26.77		42.90		54.43		59.19		56.06		50.13		37.74		19.50		-2.19		30.09
2014	-10.58		-8.96		7.16		26.23		44.48		55.73		57.35		58.16		47.70		35.65		14.27		16.13		28.61
2015	4.16		-5.21		18.87		33.20		44.61		54.63		59.61		56.52		55.10		36.42		29.97		23.35		34.27
2016	4.52		8.97		26.35		32.97		43.39		54.40		58.87		59.23		51.80		39.13		31.27		10.94		35.15
2017	8.26		15.68		17.65		34.53		42.16		53.00		56.84		53.45		50.50		38.13		19.30		5.81		32.94
2018	-0.90		-4.36		14.32		20.77		49.45		56.97		58.77		58.00		51.23		33.87		16.83		16.00		30.91
2019	0.16		-3.11		10.42		30.77		40.48		53.13		60.45		54.94		51.83		35.48		19.67		8.03		30.19
2020	9.77		3.45		22.58		28.90		44.45		55.20		60.32		58.58		44.77		30.45		26.93		11.35		33.06
2021	9.10		-4.07		24.74		31.70		43.42		57.43		57.61		58.29		47.07		42.45		23.37		10.10		33.43
2022	-9.29		-5.57		15.77		28.57		45.55		53.80		58.65		57.68		48.87		36.39		24.57		5.23		30.02
2023	11.45		3.93		12.39		31.83		47.10		55.53		55.81		55.32		53.93		39.74		22.77		24.13		34.49
2024	12.35		17.72		19.19		34.10		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	20.84	h
Period of Record Statistics
MEAN	0.74		3.41		16.66		31.03		42.60		52.29		57.19		54.85		46.95		36.03		22.72		8.25		31.21
S.D.	7.37		7.28		5.85		3.40		3.62		3.09		2.73		2.91		3.28		3.88		4.42		6.66		2.18
SKEW	0.01		0.32		0.08		-0.06		-0.18		-0.21		0.32		-0.14		-0.29		-0.57		-0.13		-0.07		0.53
MAX	20.84		22.71		33.55		40.60		50.13		58.97		65.29		61.16		55.10		45.65		34.83		24.13		36.88
MIN	-17.17		-14.79		1.30		20.77		32.55		44.40		50.87		46.13		35.31		19.55		11.83		-7.19		26.82
YRS	123		128		128		129		126		122		123		123		123		127		124		126		111