PLYMOUTH WWTP, WI

Average of Minimum Temperature (Degrees Fahrenheit)

(476678)

File last updated on April 19, 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
1910	10.68		7.21		31.55		35.03		39.68		54.70		60.48		58.61		49.73		42.90		24.37		12.55		35.62
1911	10.87		19.93		24.10		32.73		48.90		57.67		59.68		56.70	a	51.57		40.97		22.93		23.03		37.42
1912	-6.23		7.72		15.00		34.83		45.29		51.70		57.90		55.77		52.13		41.16		29.43		20.68		33.78
1913	11.87	a	7.39		18.26		35.63		43.97		54.90		58.74		58.97	a	50.00		40.00	a	33.07		25.74		36.54
1914	19.19		3.04		22.00		32.33		46.65		53.37		60.61		57.48		51.40		45.90		28.43		10.42		35.90
1915	8.90		21.71		22.87		41.27		41.63	a	48.66	a	56.31	b	53.26		51.47		41.52		30.37		18.06		36.34
1916	11.94		8.24		17.68		34.53		44.57	a	49.90		63.55		60.06		49.62	a	38.87		27.57		9.84		34.70
1917	4.90		0.64		22.84		31.67		40.70	a	50.48	a	60.35		54.68		47.47		32.74		30.07		9.37	a	32.16
1918	-0.48		9.21		26.65		30.93		46.31	b	51.86	a	57.06		59.10	b	44.88	e	43.13		31.83		25.87		35.53
1919	17.81		16.11		24.87		35.10		43.48		59.97		62.10	a	57.43	a	53.59	a	40.32		26.23		6.07	a	36.92
1920	3.00		10.04	a	23.23		30.80		42.94		55.03	a	55.50	a	54.84		53.62	a	46.81		29.63		20.61		35.50
1921	19.16		19.64		28.61		39.63		48.26		58.67		66.03	a	59.23	a	56.53		41.81		26.53		17.03		40.10
1922	8.19		10.14		26.32		34.27		50.19		55.10	a	57.50	a	58.14	b	52.33		41.00		33.93		14.71		36.82
1923	13.77		5.04		14.45		32.77		41.10	a	58.00	b	59.37	a	54.31	b	50.23		38.26		31.00		26.87		35.43
1924	-0.16		15.41		21.61		33.23		40.00		51.13		56.68		56.50	a	46.33		43.07	a	26.97		7.97		33.23
1925	10.90		17.10	g	24.97	a	36.77		39.06		55.63		58.03		57.42		54.50		31.97		25.80		11.69	b	36.98	a
1926	11.13		16.67	a	16.42		28.97		42.90	a	49.63		58.06		57.19		50.00		37.63	a	22.70		11.97		33.61
1927	10.00		20.54		28.48		34.47		42.70	a	49.77		56.58		51.97		53.73		42.30	a	29.20		11.63	a	35.95
1928	12.87		15.31		21.90		29.00		43.42		49.17	a	60.24	b	58.41	b	-----	z	-----	z	31.10	a	21.00		34.24	b
1929	-1.87	a	6.29		25.43	c	36.27		40.34	b	49.55	a	58.32		-----	z	49.62	a	40.19		23.17	a	17.39		31.34	a
1930	5.48		-----	z	-----	z	33.77		45.17	b	-----	z	-----	z	59.40	a	51.10		38.39		29.23		18.93	d	35.18	d
1931	-----	z	-----	z	-----	z	-----	z	41.52	b	58.10		63.16		58.26		57.50	b	45.37	a	34.97	a	27.23		48.26	d
1932	21.39		17.17		17.03		32.47		45.50	a	53.95	h	60.70	a	59.87	a	49.10	a	39.58		24.03		15.23		34.73	a
1933	21.19		10.25		22.84		34.00		46.94		60.39	b	60.66	b	55.83	b	54.57		37.19		23.90	a	15.71		36.95
1934	19.19		7.00		19.20	a	32.83		46.23		56.60		59.00		54.55		49.10		42.48		33.73		13.80	a	36.14
1935	7.35		15.61		25.97		32.60		41.23		51.10		64.87	a	60.19		50.07		39.23		27.38	a	15.55		35.93
1936	4.97		-2.55		24.68		29.83		48.45		50.67		62.42		60.90		53.83	a	36.94		24.83		19.32		34.52
1937	9.71		12.75		20.68		33.80		44.87	a	52.83	a	61.00	b	63.10	b	50.31	a	36.90		26.07		13.84		35.49
1938	10.55		19.82		28.58		36.57		44.61		54.17		60.03	a	61.68		51.36	b	44.52		29.47		17.17	a	38.21
1939	18.67	a	8.29		22.39		32.83		46.29		56.53		60.13		59.58		52.33		39.97		29.31	a	24.58		37.57
1940	4.87		16.52		19.45		31.70		42.93	a	54.03		60.61		58.84		51.38	a	42.94		26.23		18.84		35.70
1941	16.23		11.54		18.53	a	39.03		47.53	a	56.07		59.94		58.48		53.45	a	42.45		32.53		24.19		38.33
1942	12.26		14.04		28.58		38.07		43.84		54.10		59.68		58.35		48.97		39.87		27.47		12.87		36.51
1943	7.39		11.64		17.77		31.67		44.06		57.40		60.19		59.77		46.80		40.16		26.00		16.29		34.93
1944	19.00		14.97		20.61		31.63		48.48		56.24	a	57.87		59.10		51.93		39.39		33.87		11.58		37.06
1945	8.19		13.50		32.97		35.70		39.74		50.10		56.00		58.45		50.07		37.77		27.60		11.97		35.17
1946	12.77		11.89		31.58		34.80		40.97		52.33		57.58		55.68		49.27		42.87		29.60		16.77		36.34
1947	15.65		8.75		20.90		32.57		39.87		50.10		58.23		63.55		52.07		48.29		23.83		16.39		35.85
1948	4.74		11.21		20.16		36.47		41.65		53.40		58.58		59.16		54.23		39.00		33.57		16.87		35.75
1949	14.32		13.11	a	22.52		34.00		43.94		56.63		61.97		59.81		46.60		41.48		28.23		17.48		36.67
1950	10.45		13.04		18.03		28.83		42.03		54.97		56.13		53.23		50.53		44.23		24.20		9.97		33.80
1951	9.23		13.82		21.55		35.27		47.23		50.97		58.13		55.84		48.40		41.00		20.83		14.97		34.77
1952	12.81		20.62		21.87		38.87		45.19		56.33		61.74		58.03		50.47		34.00		30.17		22.97		37.76
1953	17.61		16.32		26.39		33.80		45.71		54.90		60.06		61.06		50.77		44.32		32.73		20.90		38.72
1954	11.13		23.57		22.68		36.07		40.97		-----	z	-----	z	-----	z	50.00	w	41.74		31.07		18.87		28.26	d
1955	11.26		14.46		20.65		40.70		47.32		54.63		64.42		62.84		50.27		42.39		22.87		11.97		36.98
1956	14.48		13.86		19.45		31.40		42.97	a	56.73		57.58		58.97		47.43		44.29		29.10		20.06		36.36
1957	5.61		17.86		23.42		36.73		44.19		54.60		60.23		58.17	a	49.30		39.35		28.50		19.77		36.48
1958	13.61		8.07		25.61		35.17		43.13		49.00		58.10		57.74		51.23		43.00		30.20		9.94		35.40
1959	4.77		8.21		19.58		34.80		46.93	a	56.20		57.23		62.35		51.73		38.58		19.50		24.77		35.39
1960	16.61		16.14		13.87		36.33		44.65		52.30		56.65		59.29		53.27		40.94		31.53		13.74		36.28
1961	11.06		21.89		27.87		33.00		41.26		54.80		59.03		58.61		54.03		42.19		28.93		14.29		37.25
1962	5.87		11.50		23.10		33.37		48.77		53.27		56.45		57.74		47.43		42.26		29.97		13.55		35.27
1963	2.06		5.21		23.65		33.90		42.06		54.37		60.00		56.35		49.17		47.94		33.27		7.06		34.59
1964	17.35		16.55		22.10		34.80		48.97		55.10		61.13		56.84		50.73		38.55		31.00		14.61		37.31
1965	7.50	c	10.00		18.32		33.07		46.58		51.33	i	55.87		56.32		49.77		41.06		29.50		23.40	a	33.76	a
1966	2.97	a	12.18		23.94		30.93		37.16		55.27		62.35		57.39		48.60		40.10		28.83		15.68		34.62
1967	12.94		6.64		23.26		34.47		38.74		54.43		56.06		52.26		46.13		38.29		25.67		18.06		33.91
1968	11.42		8.86		28.03		35.47		41.77		54.70		58.16		57.13		51.27		41.39		29.33		15.19		36.06
1969	7.94		15.43		18.00		34.47		43.58		48.60		56.77		60.35		49.73		37.48		25.27		15.68		34.44
1970	2.48		9.43		20.16		36.13		45.55		56.27		61.16		57.81		50.97		42.26		27.77		13.71	c	35.31
1971	3.13		11.36		18.17	a	30.83		39.03		56.60		56.52		54.03		51.53		46.10	a	27.83		19.55		34.56
1972	4.23		8.34		18.13		30.67		45.16		49.07		58.52		57.87		48.60		35.90		29.47		12.00		33.16
1973	14.67	a	15.86		30.52		32.87		41.42		55.90		59.97		60.03		50.00		43.90		26.87		15.19		37.27
1974	11.00		10.43		22.13		33.50		39.84		51.73		61.48		57.39		45.90		40.19		30.93		21.58		35.51
1975	14.45		14.93		18.26		29.90		49.29		55.43		61.42		59.61		45.63		39.80	a	33.60		16.13		36.54
1976	5.71		19.31		25.40	a	35.83		41.03		56.27		58.84		55.74		47.67		35.43	a	20.93		4.40	a	33.88
1977	-2.45		15.14		30.42		38.50		49.68		51.97		62.52		56.10		53.03		39.42		27.87		13.87		36.34
1978	6.48		7.00		20.26		32.17		44.77		52.20		57.39		58.81		55.10		39.70	a	28.21	a	13.52		34.63
1979	1.00	a	4.43		23.61		32.97		43.06		52.86	b	58.97		58.13		52.17		39.48		29.37		21.90		34.83
1980	11.42		12.24		21.39		36.73		46.42		52.77		61.19		62.35		51.20		37.65		29.80		16.48		36.64
1981	12.26		18.79		26.65		37.93		42.52		56.67		58.68		60.06		50.00		37.68		-----	z	18.55		38.16	a
1982	0.52		11.79		22.84		31.10	a	50.79	b	48.53		62.00		56.20	a	50.87		42.68		29.21	a	25.42		36.00
1983	18.19		22.52	a	26.32		33.23		40.39		55.53		64.61		62.97		53.27		42.45		31.97	a	6.17	a	38.13
1984	9.07	a	24.18	a	18.90		35.30		43.03		56.27		60.13	a	61.45		51.23		43.37	a	28.63		18.77	a	37.53
1985	6.00		13.00		27.90		39.00		47.77		51.34	a	59.19		58.00		53.03		40.94		27.03		6.10	a	35.78
1986	11.61		14.41	a	25.68		37.63		46.68		53.67		61.65		56.29		53.55	a	41.65		25.47		20.26		37.38
1987	16.83	a	21.64		27.16		38.97		47.10	b	60.10		63.06		59.97		52.73		36.03		33.27		24.32		40.10
1988	7.39		9.48		24.45		34.38	a	45.90		57.43		63.61		63.87		51.72	a	35.16		31.27		-----	z	38.61	a
1989	20.32		8.32		21.65		32.66	a	43.35		53.67		60.42		59.00		49.03	a	40.58		25.13		5.87		35.00
1990	21.61		17.04		28.19		37.07		40.97		56.03		59.87	a	59.71		53.48	a	37.81		31.69	a	16.20	a	38.31
1991	8.32		19.36		26.23		37.63		50.61		59.72	a	61.85	e	58.22	d	-----	z	39.10		21.90	a	17.17	b	36.37	a
1992	19.04	c	-----	z	-----	z	-----	z	-----	z	50.93		55.06		53.55		47.83	a	35.77		29.03		17.71		38.62	d
1993	12.10		10.93		22.77		31.77		45.52		52.47		60.61		60.90		46.37		36.13		27.93		19.53	a	35.59
1994	0.90		5.57		23.94		34.00		44.10		55.57		59.23		56.23		53.50		41.19		31.34	a	21.30	a	35.57
1995	14.29		12.44	a	24.87		31.73		44.32		57.30		61.03	a	66.06		46.57		41.35		19.97		12.71		36.05
1996	7.10		10.34		17.19		31.43		42.03		55.57		57.45		58.29		50.13		37.45	b	22.43		17.77	a	33.93
1997	8.27	a	16.29		23.39		33.55	a	39.19		54.50	b	58.00		56.23		50.57		38.90		26.87		24.23		35.83
1998	16.93	a	25.61		26.58		36.97		50.10		55.86	a	60.55		61.06		53.27		41.97		33.83		21.68		40.37
1999	8.45		22.11		23.71		38.10		47.84		55.83		63.81		57.07	a	47.53		37.87	a	32.30		17.87		37.71
2000	11.00	a	20.00		31.13		33.97		47.81		56.28	a	57.84		58.39		49.83		43.29		28.69	a	5.55		36.98
2001	14.97		11.96		22.06		36.86	a	46.93	a	55.24	a	60.48		62.19		49.93		39.93	a	36.13		23.97		38.39
2002	20.65		19.89		20.35		36.00		41.39		56.80		63.10		58.58		53.79	a	36.94		25.93		19.90		37.78
2003	7.26		8.14		22.58		32.80		43.55		51.13		58.90		60.23		50.13		37.87		29.33		21.03		35.25
2004	6.00		14.48		28.57	a	34.17		43.69	b	53.43		58.26		54.61		52.33		41.90	a	33.30		18.77		36.63
2005	14.80	a	22.82		23.26		38.50		46.00		61.17		66.03	a	60.45		54.43		40.77		28.57		14.65		39.29
2006	24.74		12.93		24.19		37.43		46.39		53.57		62.16		60.42		49.10		35.61		31.67		23.45		38.47
2007	17.65		7.11		27.52		33.97		46.90		55.47		59.13		60.48		51.90		45.16		27.17		13.55		37.17
2008	11.19		7.86	a	19.52		36.27		41.29		56.20		60.40	a	56.84		51.33		38.48		27.20		5.74		34.36
2009	2.32		13.57		21.94		34.00		45.94		53.47		55.29		57.48		49.83		37.45		33.63		15.94		35.07
2010	13.00		16.21		26.35		38.13		47.90		57.60		63.23		61.97		49.77		40.26		28.03		14.29		38.06
2011	9.29		13.11		21.29		34.60		44.65		53.77		63.87		60.10		49.40		38.84		31.10		22.77		36.90
2012	15.29		20.97		35.35		34.67		48.00		56.13		64.19		58.71		47.63		37.94		28.50		23.90		39.27
2013	11.00		10.32		18.81		31.87		44.77		54.53		59.35		57.26		49.57		39.58		26.63		8.77		34.37
2014	-0.65		2.14		14.84		32.30		44.97		55.33		56.42		58.06		49.37		39.23		22.37		22.23		33.05
2015	11.35		0.75		21.13		34.40		46.87		52.53		57.84		59.03		55.33		42.13		32.97		28.97		36.94
2016	12.29		17.62		29.45		32.43		44.58		55.33		61.70	a	61.97		55.50		43.61		33.70		17.52		38.81
2017	16.48		21.00		23.94		37.27		44.19		56.97		59.65		56.29		51.27		44.13		25.97		14.58		37.64
2018	10.90		12.14		21.74		26.13		49.37	a	56.83		59.61		60.68		50.78	c	38.52		24.83		22.61		36.18
2019	8.29		9.14		18.23		33.83		42.77		53.03		62.14	b	56.57	a	54.83		38.23		24.13		21.26		35.20
2020	18.29		14.31		28.00	a	31.50		44.53	a	54.83		63.77		59.19		51.28	a	36.29		32.83		21.23		38.01
2021	15.55		5.93		26.03		35.20		44.68		58.63		59.74		60.94		51.80		47.23		27.20		21.77		37.89
2022	4.58		9.29		23.58		31.70		47.26		54.70		59.94		59.26		52.48	a	35.81		28.21	a	17.35		35.35
2023	21.84		16.21		22.74		35.13		43.19		52.87		59.90		58.65		54.07		42.19		27.30		28.90		38.58
2024	17.81		22.21		26.84		35.47	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	22.28	i
Period of Record Statistics
MEAN	10.74		13.08		23.21		34.30		44.43		54.37		59.85		58.45		50.86		40.33		28.46		17.00		36.23
S.D.	6.13		5.66		4.18		2.71		3.01		2.81		2.45		2.53		2.50		3.10		3.53		5.52		1.64
SKEW	-0.19		-0.06		0.22		0.05		-0.01		-0.15		0.29		-0.01		-0.00		0.08		-0.28		-0.17		0.18
MAX	24.74		25.61		35.35		41.27		50.79		61.17		66.03		66.06		57.50		48.29		36.13		28.97		40.37
MIN	-6.23		-2.55		13.87		26.13		37.16		48.53		55.06		51.97		44.88		31.97		19.50		4.40		32.16
YRS	114		111		112		112		113		110		112		112		111		113		113		113		102