PLYMOUTH WWTP, WI

Average of Average Temperature (Degrees Fahrenheit)

(476678)

File last updated on April 18, 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	18.52		16.38		41.69		46.03		50.40		67.23		72.97		69.76		59.42		52.90		29.95		19.90		45.43
1911	19.90		26.14		33.68		42.27		60.02		68.57		71.87		67.75	a	60.65		47.71		29.92		29.34		46.48
1912	1.32		14.88		23.06		45.07		55.48		62.70		68.84		64.35		61.03		50.45		37.08		28.29		42.71
1913	20.13	a	15.39		27.94		45.52		53.60		66.18		69.16		69.05	a	59.97		48.69	b	40.32		32.08		45.67
1914	25.65		12.00		29.39		41.78		57.40		63.48		71.45		68.50		61.07		54.74		36.78		17.21		44.95
1915	16.71		27.02		29.95		52.20		50.20	a	59.17	a	65.91	b	63.00		61.33		50.81		37.78		24.34		44.87
1916	21.08		15.59		26.19		43.70		54.22	a	59.52		76.11		70.92		59.29	a	47.89		34.77		17.84		43.93
1917	14.61		10.02		30.31		40.27		50.33	a	59.93	a	70.05		65.58		58.13		40.15		37.45		15.77	a	41.05
1918	6.71		18.25		36.23		40.70		57.98	b	63.07	a	68.31		70.74	b	54.82	e	52.82		38.68		31.15		44.95
1919	24.58		23.62		33.05		43.78		53.42		69.78		73.22	a	68.30	a	63.48	b	49.23		33.05		13.32	a	45.74
1920	11.31		17.71	a	32.21		38.62		53.84		65.83	a	66.65	a	66.55		64.26	a	56.52		35.17		26.56		44.60
1921	25.65		26.62		36.50		49.42		58.15		70.03		77.82	a	69.40	a	65.47		49.82		32.25		24.31		48.79
1922	17.35		19.29		32.95		43.55		60.58		66.38	a	67.92	a	69.38	c	63.15		50.85		40.03		22.47		46.16
1923	20.94		14.14		23.90		42.13		53.25	a	69.25	b	71.00	a	65.39	c	60.00		47.81		38.67		33.48		45.00
1924	9.92		22.26		28.52		41.71	a	48.95		60.93		66.73		66.28	a	55.50		53.90	a	35.45		15.27		42.12
1925	19.23		25.57	g	33.78	a	48.38		51.63		66.12		68.53		68.90		64.33		39.95	a	33.82		18.54	c	46.66	a
1926	20.13		23.59	a	24.28	a	39.72		54.77	a	60.21	a	68.81		67.53		58.40		45.76	b	30.12		19.50		42.73
1927	17.13		27.31	a	36.23		43.29	a	51.88	a	60.90		67.74		64.10		63.16	a	51.37	a	36.03		20.10	b	44.94
1928	20.47		23.12		30.98		38.20		55.16		59.36	a	70.24	b	67.93	b	-----	z	-----	z	37.09	a	27.19		42.97	b
1929	8.17	a	14.89	a	34.38	f	45.28		51.26	b	60.43	a	69.84		-----	z	60.88	b	48.73		30.78	a	23.48		41.37	b
1930	13.13		-----	z	-----	z	44.08		55.17	b	-----	z	-----	z	71.22	a	62.55		46.55		38.63		25.35	d	44.59	d
1931	-----	z	-----	z	-----	z	-----	z	52.88	b	68.23		74.34		69.52		67.54	b	53.71	b	42.81	a	33.05	a	57.76	d
1932	27.37		26.33		24.34		41.97		56.27	a	66.25	h	72.05	a	70.75	a	61.43	b	47.63		32.18		23.03		43.94	a
1933	29.52		18.98		29.73		42.13		55.56		71.91	b	70.71	b	67.28	b	65.50		47.26		32.17	a	22.84		46.13
1934	26.90		16.02		28.17	b	42.67		60.61		68.83		70.56		66.73		59.12		51.44		40.63		20.97	a	46.05
1935	16.81		22.64		33.45		41.62		50.08		60.95		74.90	a	69.47		60.32		48.97		34.53	a	21.48		44.60
1936	12.44		8.13	b	32.40		39.03		60.48		63.03	a	75.76		72.00		63.10	a	46.55		32.90		27.68		44.46
1937	19.53		20.89		28.58		41.77		55.70	a	63.19	a	72.68	c	75.33	b	61.24	a	46.00		33.92		20.63		44.95
1938	17.56		26.38		37.74		45.53		54.73		64.42		69.93	a	71.98		59.59	b	54.29		38.15		24.40	a	47.06
1939	25.84	b	18.57		31.16		41.58		58.32		66.62		71.66		70.48		63.98		49.82		38.18	b	31.18		47.28
1940	12.31		23.43		25.83	b	40.88	a	53.28	a	64.48		71.40		67.08		61.67	a	51.98		33.48		25.24		44.26
1941	22.65		19.70		26.53	a	49.83		59.05	a	66.65		72.06		70.11		63.38	a	51.24		39.45		30.32		47.58
1942	19.35		20.70		34.97		49.68		53.82		63.92		69.79		67.63		58.08		49.85		35.77		19.23		45.23
1943	15.73		21.32		26.76		41.97		54.10		67.91	a	71.52		69.87		57.47		49.56		33.15		24.97		44.53
1944	27.79		23.69		27.58		40.58		58.94		67.05	a	69.19		70.58		61.32		49.94		40.05		19.10		46.32
1945	15.31		22.04		42.60		45.63		50.65		60.15		67.29		68.92		59.82		47.89		35.42		18.63		44.53
1946	20.97		21.12		40.90		47.03		52.56		63.63		69.65		67.23		60.57		53.95		38.12		26.05		46.82
1947	23.32		16.98		28.74		42.00		50.35		60.78		69.47		74.90		62.83		59.28	a	30.30		23.65		45.22
1948	13.89		20.02		29.40		47.42		52.81		64.37		70.69		70.95	a	65.10		49.15		39.77		24.52		45.67
1949	22.53		21.61	a	30.81		45.02		56.10		68.05		72.53		70.34		57.27		52.94		36.22		26.00		46.62
1950	20.98		21.04		26.00		37.57		53.47	a	65.30		67.10		63.79		59.70		54.08		32.25		16.95		43.19
1951	16.89		21.59		28.21		42.75		58.39		61.85		68.87		65.23		58.22		49.95		28.45		21.95		43.53
1952	21.23		26.67		28.87		48.55		55.50		67.63		72.34		67.98		62.18		45.65		38.48		28.34		46.95
1953	24.39		24.18		33.15		42.08		55.94		66.85		70.89		71.40		62.47		55.90		41.82		27.66		48.06
1954	19.71		31.20		30.24		47.03		51.42		-----	z	-----	z	-----	z	61.36	w	50.69		39.00		25.48		36.85	d
1955	18.98		22.12		29.90		50.87		58.47		64.95		75.06		74.39		62.48		52.03		31.32		19.65		46.69
1956	22.13		22.74		27.50		42.25		54.38	a	67.65		67.10		68.55		57.77		54.73		35.93		27.21		45.66
1957	13.74		25.84		32.13		45.77		53.61		65.50		71.16		69.32	a	60.07		48.56		35.45		27.58		45.73
1958	21.13		16.12		32.77		46.00		55.74		60.62		68.60		70.66		61.75		52.74		38.23		17.53		45.16
1959	12.89		17.32		27.60		44.74	a	59.73	a	67.62		69.53		73.27		63.20		45.65		27.62		30.65		44.98
1960	23.37		22.74		22.60		46.09	a	53.60		62.73		67.79		69.08		62.68		49.81		39.28	a	21.58		45.11
1961	19.29		29.09		34.02		40.87		53.13		66.00		69.66		69.84		63.78		51.11		36.32		21.44		46.21
1962	14.00		18.80		30.40		44.08		59.32		63.95		66.39		68.61		57.83		50.97		36.90		21.58		44.40
1963	9.00		14.71		32.68		46.28		53.16		66.47		71.26		67.11		60.00		58.76		41.27		15.21		44.66
1964	25.19		25.09		30.13		44.62		60.24		66.13		71.16		66.58		59.35		48.32		40.76	a	21.58		46.60
1965	19.41	i	19.20		24.81		41.07		58.21		63.86	i	67.66		66.56		59.52		50.72	a	37.53		30.67	b	45.59	b
1966	10.84	c	20.20		32.37		40.10	a	49.32		67.19	a	74.80	a	68.74		59.90		50.16		36.77		23.44		44.49
1967	22.08		16.93		32.71		44.93		50.84		66.73		68.23		64.95		59.05		48.24		32.88		25.56		44.43
1968	19.73		18.60		39.26		46.73		53.37		66.12		70.11		69.55		62.00	a	51.23		36.48		23.26		46.37
1969	15.84		23.54		27.97		46.05		56.23		59.17		69.27	a	73.06		61.57		47.18		34.02		23.50		44.78
1970	11.08		20.02		28.95		46.68		57.35		67.75		73.81		70.97		61.55		51.60		35.15		22.46	c	45.61
1971	12.27		19.80		26.27	a	43.12		53.00		69.18		68.50		66.77		63.47		55.67	a	35.93		26.82		45.07
1972	13.97	b	17.71		26.84		40.35		58.58		62.28		69.30	a	68.37		59.02		45.56		35.10		19.81	b	43.07
1973	22.90	a	23.46		38.85		42.22		52.60		67.83		71.13		70.94		60.58		53.44		35.25		22.55		46.81
1974	19.43	a	19.64		31.23		45.77		51.56		63.00	a	72.40		67.95		57.77		50.05		38.25		28.19		45.44
1975	22.45		22.27		27.47		38.90	a	60.56		66.10		72.78	a	70.53		56.90		52.13	a	42.62		24.44		46.43
1976	15.06		28.03		34.37	a	47.02		53.18		69.10		71.92	a	68.58		60.63		45.16	b	29.45		13.85	a	44.70
1977	6.26		22.74	a	38.60		51.33	a	63.21		63.98		73.37		66.27		61.07		48.52		35.63		20.98		46.00
1978	14.11		15.68		29.84		42.07	a	57.10		64.72		67.73		69.97		65.68		49.31	b	36.40	a	20.52		44.43
1979	8.75	a	13.89		31.58		41.75		54.25	a	63.95	b	70.02		67.35		63.75		47.98		36.28		29.82		44.12
1980	18.47		20.28		29.68		46.25		58.66		64.63		72.21		71.52		60.58		45.95		37.15		23.26		45.72
1981	19.68		26.52		35.90		48.27		55.15		67.03		69.60	b	69.39		59.38		46.23	a	-----	z	24.73		47.44	a
1982	11.33	a	20.94	a	30.69		41.53	a	61.09	c	59.95	b	71.74		67.30	c	60.16	a	51.65	a	36.31	a	32.10		45.40
1983	24.66	b	29.31	a	33.68	a	41.10		50.07	b	66.80		75.32		72.92	a	63.57	b	50.98	b	38.81	a	16.37	e	46.97
1984	16.69	b	31.79	a	26.53		44.47		54.02	a	67.47		70.53	a	71.88	a	60.48	a	51.66	b	37.22		27.18	a	46.66
1985	14.65		20.14		36.77		50.07		60.50		63.52	a	70.83	a	67.13		62.30		49.84		33.68		14.00	a	45.29
1986	19.40	a	21.20	a	35.81		48.60		57.92	a	64.41	a	71.81		66.68		61.76	a	50.55		33.50		26.53		46.51
1987	23.97	a	30.16		37.03	a	50.13		59.69	b	70.88	a	73.79		68.98		62.68		45.44		40.00		29.48		49.35
1988	16.40		18.98		33.85		46.02	a	60.13		71.70		75.07	a	74.35		62.22	a	44.60		38.30		-----	z	49.24	a
1989	28.24		17.92	d	29.35	h	44.05	b	55.08		64.77		71.08		69.65		60.53	a	51.47		33.72		14.31		46.44	a
1990	29.73		26.96		36.82		48.53		52.84		67.12		70.02	a	69.60		63.97	a	48.32		41.24	a	24.67	b	48.32
1991	16.52		27.39		34.78	a	48.32		61.60		70.59	b	71.69	g	69.93	d	-----	z	49.73	a	31.21	a	25.16	b	43.52	b
1992	25.32	k	-----	z	-----	z	-----	z	-----	z	61.70		64.60		64.48		57.67	a	46.15		34.08		24.77		50.49	e
1993	19.90		18.88		30.02		40.07		55.08		61.80		69.56		70.44		55.67		46.03		34.98		25.47	a	43.99
1994	9.05		13.95		32.00		44.75		55.29		66.73		68.68		65.81		62.88		50.71		38.93	a	28.72	a	44.79
1995	20.34		20.41	a	33.34		40.02		54.08		68.52		71.13	a	74.19		57.52		50.08		27.45		19.47		44.71
1996	16.40		17.97		25.98		40.22		50.63		64.37		67.32		68.31		60.53		48.05	b	29.22		23.43	a	42.70
1997	16.38	a	23.66		30.98		43.88	b	48.77		65.91	b	68.05		64.71		60.65		48.97		33.43		29.06		44.54
1998	23.43	a	31.61		33.71		46.17		60.40		65.71	a	71.58		70.27		65.35		51.08		41.02		30.40	b	49.23
1999	15.73		29.07		32.89		47.23		57.68		66.18		74.00		66.30	a	59.85		48.47	b	42.35		25.63		47.11
2000	19.27	a	28.02		40.47		43.55		57.56		65.59	a	67.90		68.15		59.98		52.77		35.36	a	13.56		46.02
2001	22.27		20.14		29.94		47.64	a	57.15	a	64.64	a	71.69		71.85		59.52		49.17	a	44.97		31.06		47.50
2002	27.26		28.20		28.61		44.77		51.60		67.07		73.95		69.81		64.91	a	45.69		34.33		27.34		46.96
2003	15.45		17.36		31.82		43.05		53.56		62.90		70.21		70.79		60.97		48.53		36.87		28.61		45.01
2004	13.89		22.98		36.37	a	45.87		53.79	b	63.10		67.81		64.48		65.02		51.43	a	40.83		26.65		46.02
2005	21.98	a	29.75		31.98		50.37		55.42		72.88		78.98	b	71.42		65.80		51.23	a	37.20		20.11		48.93
2006	30.52		20.86		32.74		48.27		55.79		64.32		73.18		70.27		58.82		44.62	a	39.10		29.89		47.36
2007	24.37		14.39	a	36.29		43.13		58.24		67.20		69.69		69.65		62.93		54.68		35.17		20.77		46.38
2008	18.48		16.70	a	27.84		45.10		52.66		65.78		70.48	a	67.48		60.95		48.16		34.98		16.81		43.79
2009	10.05		22.86		31.02		43.80		55.90		63.68		65.71		67.06		61.23		44.42		41.72		22.08		44.13
2010	18.98		22.82		36.31		48.77		58.18		66.52		72.68		71.92		59.33		51.40		36.98		20.61		47.04
2011	16.05		20.46		29.06		42.45		53.19		63.37		74.06		70.03		59.05		50.13		39.13		29.77		45.56
2012	23.63		28.53		45.45		44.38		59.19		67.95		76.23		68.95		59.75		47.39		36.80		30.08		49.03
2013	19.98		18.48		25.84		39.78		56.10		64.33		69.39		68.47		60.97		48.84		34.00		17.61		43.65
2014	8.82		11.09		23.66		41.32		55.35		65.35		66.52		67.63		60.17		48.02		29.85		28.24		42.17
2015	17.97		9.64		31.53		44.68		57.10		62.88		68.60		68.06		65.70		51.35		41.80		34.90		46.19
2016	19.16		25.07		37.63		41.58		55.97		66.02		71.40	a	71.63		64.87		52.23		43.10		23.37		47.67
2017	22.90		29.70		31.11		47.55		53.68		67.58		70.03		65.81		63.10		53.17	a	34.32		21.40		46.70
2018	18.89		20.54		30.76		35.38		60.78	a	66.02		71.37		70.37		61.60	d	46.69		30.37		28.44		45.10
2019	16.39		17.89		27.60		43.47		51.79		63.42		72.53	b	66.97	a	63.57		47.00		30.35		28.15		44.09
2020	25.34		22.16		35.37	a	40.53		54.22	a	66.05		73.66		69.68	a	60.34	b	44.15		42.03		28.13	a	46.80
2021	22.29		14.19	a	36.37	a	45.38		55.55		69.75		69.82		71.53		62.53	a	55.18	a	36.30	b	29.33	a	47.35
2022	12.85		19.43		31.77		39.85		56.84		65.82		70.34	b	68.58		62.91	b	46.78	a	38.05	b	24.58	a	44.82
2023	26.66		24.75		30.88	a	45.72	a	54.87	a	65.70	b	70.57	b	68.21		63.40		51.78	a	36.21	b	34.81		47.80
2024	22.11		31.50		36.40		45.27	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	30.01	i
Period of Record Statistics
MEAN	18.54		21.28		31.59		44.16		55.33		65.28		70.73		68.97		61.22		49.78		36.14		24.16		45.58
S.D.	5.62		5.10		4.46		3.33		3.24		2.98		2.66		2.49		2.45		3.32		3.70		5.03		1.60
SKEW	-0.30		-0.03		0.43		0.14		0.14		-0.06		0.42		0.08		-0.02		0.02		-0.17		-0.16		0.00
MAX	30.52		31.79		45.45		52.20		63.21		72.88		78.98		75.33		67.54		59.28		44.97		34.90		49.35
MIN	1.32		8.13		22.60		35.38		48.77		59.17		64.60		63.00		54.82		39.95		27.45		13.32		41.05
YRS	112		111		110		112		113		110		111		112		111		113		113		113		101