WATERVILLE TREATMENT PLT, ME

Average of Maximum Temperature (Degrees Fahrenheit)

(179151)

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
1895	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1896	-----	z	-----	z	37.62	b	54.63		68.69	b	74.79	a	80.00		78.89	c	67.87		53.81		45.70		30.23		59.22	b
1897	31.00		33.70	a	39.10		56.10		65.30	a	69.90	a	81.13	a	77.48		71.50		62.03	a	42.37		31.61		55.10
1898	26.90		33.75		46.26		53.28	a	67.00		74.30		82.48		79.47	a	73.48	a	60.32		44.97	a	33.13	a	56.28
1899	29.35	e	28.78	a	37.65		57.32	b	68.35		79.48	a	79.83	a	79.71		69.59	m	64.00	y	46.71	i	38.66	b	55.46	c
1900	32.42		33.46	b	42.79	c	56.80		64.29		78.45	a	81.65		80.87		74.83		64.97		47.60		-----	z	59.83	a
1901	28.03	a	29.08	c	39.79	b	56.60		67.53	a	79.07	a	82.50	a	78.06		74.76	a	62.03		42.55	a	33.20	a	56.10
1902	31.00	b	33.35	b	47.57	c	54.47		64.32		71.83		77.43	a	76.77		71.36	b	59.20	a	47.60		26.59	b	55.12
1903	28.57	a	32.04		50.32		56.00		71.10	a	71.77		78.94		74.66	b	74.70		-----	z	43.33		29.53	a	55.54	a
1904	22.42		24.93		40.84		51.72	a	73.16		-----	z	80.04	d	77.39		63.17		50.77	a	34.80		19.23		48.95	a
1905	23.59	b	25.79		39.87	a	54.23		68.03		73.83		82.42		77.94		69.87		59.97		42.90		34.90		54.44
1906	34.71		33.82		36.00		53.37		64.35		75.93		81.23		82.97		73.00		60.87		40.86	a	25.71		55.24
1907	24.06		26.46		41.39		50.70		61.03		77.18	b	80.52	b	77.65		69.67		56.13		44.90		36.97	a	53.89
1908	33.35		30.34		41.52		52.33		69.03		80.31	a	85.68		-----	z	78.87		66.39		42.83		-----	z	58.07	b
1909	29.06		33.25		39.13		52.69	a	64.65		78.87		80.30	a	81.60	a	72.40		59.90		48.10		32.43	a	56.03
1910	33.03		32.04	a	47.13		59.50		66.81		74.34	a	83.57	a	77.97		71.13		60.10		42.97	a	29.23	a	56.48
1911	31.29		30.18		38.29		54.70		76.90	a	76.61	b	86.52		79.59	b	68.62	a	58.19		44.57		38.38	b	56.99
1912	22.47	a	31.52		39.06		55.17		68.03		76.77		82.79	b	75.43	a	70.77		62.45		47.66	a	38.42		55.88
1913	36.27	a	29.43		44.55	b	58.60		64.71		76.82	b	83.23		81.41	b	72.07	b	62.32		51.29	b	37.71		58.20
1914	26.73	a	26.32		40.58		52.85	c	71.37	a	77.44	c	80.26		78.34	b	73.79	a	63.65		44.72	a	32.88	e	55.75
1915	32.17	a	38.42	b	42.23	a	58.37		65.97		77.80		79.93	a	77.55		75.44	c	63.07	a	47.47		34.93	a	57.78
1916	32.71		29.62		37.10		56.97		67.30	a	73.03		83.71		82.87	a	72.67		62.10		43.63		32.37	a	56.17
1917	29.63	a	28.86		42.37	a	52.00		60.16		75.30		85.07	a	81.26		70.33	o	56.82	c	42.97		27.92	e	52.94	a
1918	19.45		32.29	d	42.27	a	59.67		73.97	a	74.10	a	82.45		81.10	a	68.10		62.82	c	45.77		33.16		56.26
1919	31.04	c	36.18		44.60	a	54.19	c	69.42		81.79	a	84.13	a	77.10		68.33		58.90		44.03	a	28.97	a	56.56
1920	22.29		30.76		43.68		51.33		68.35		77.57		81.45		83.45		73.77		67.03		41.90		33.77		56.28
1921	32.65		34.14		48.00	a	62.14	a	72.20	a	78.46	b	86.77		79.29		76.43		62.06		39.34	a	32.74		58.69
1922	27.81		31.54		44.35		57.43		71.90		75.67		81.81		79.29		72.33		60.83	g	46.07		29.48		56.15	a
1923	28.39		27.33	a	37.55		52.83		68.30	a	78.90		79.35		77.58		74.87		63.35		49.27		40.37	a	56.51
1924	32.97		29.86		42.71		52.67		63.57	a	75.52	a	82.42		80.10	a	71.50		64.45		49.33		28.90		56.17
1925	25.97		39.07	a	45.74		60.07	a	65.42		79.00		80.10		80.52		71.27		52.06		45.53		32.42		56.43
1926	27.65		31.64		36.55		48.23		65.52		74.50		80.71		78.65		71.79	a	60.13		46.72	a	30.39		54.37
1927	32.23		31.89	a	46.32		57.33		64.39		75.30		81.84		76.29		74.17		63.35		49.77		38.39		57.61
1928	32.16		31.97		38.94		52.67		65.94		73.70		81.81		81.26		68.10		62.26		45.40		39.13		56.11
1929	30.26		33.25		44.16		54.93		69.97		76.80		82.84		77.48		74.30		59.97		46.27		31.07	b	56.77
1930	29.52		34.75		40.15	d	55.77		70.10		82.37		81.94		77.84		76.23		62.45		48.67		33.77		57.80
1931	32.23		34.50		46.00		59.53		70.74		76.59	a	82.32		78.27	a	73.65	d	64.20	a	50.79	b	35.56	d	58.70
1932	34.95	i	33.07		38.93	b	54.69	a	72.14	c	77.74	c	79.25	g	82.59	d	74.13	g	61.74	h	44.04	b	38.29		55.19	d
1933	37.63	a	34.89		39.81		53.33		71.34	b	80.11	b	81.07	a	79.71	c	73.44	c	58.57	a	40.52	c	26.57	a	56.42
1934	28.10		24.86		41.48		57.07		72.41	b	77.97		84.65		78.97		74.77		57.37	a	47.77		30.84		56.35
1935	25.07	b	32.67	a	42.35		54.93		66.50	a	76.82	b	85.27	a	83.33	d	70.87		62.33	a	49.13		28.81		56.51
1936	29.97	b	28.18	a	48.90		51.93		72.28	b	79.77		80.39		80.20	a	73.13		61.45		42.10	a	36.90	a	57.10
1937	37.73	a	38.18		39.48		57.03		72.70	a	79.53		86.13		88.77		77.70		59.45	b	46.47		30.61		59.48
1938	30.58		33.18		42.74		61.55	a	68.81		78.81	i	79.90	k	82.83	g	71.20		65.58		49.47		36.13		51.03	c
1939	31.06		32.32		37.45		51.29	b	70.52	d	-----	z	84.10		83.84		72.03		59.38	b	45.07		33.10	b	54.56	a
1940	26.32		35.39	a	39.77		51.72	a	68.26		75.60		83.32		81.00		71.20		58.77	a	45.76	a	32.13		55.77
1941	27.48	b	35.86		39.32		63.90		73.00		82.00	a	85.65		80.45		75.41	a	60.61		49.03		39.71		59.37
1942	32.07	a	30.96	d	45.77		59.97	a	72.06		78.67		81.87	a	80.70	a	73.97		64.13		46.93	a	30.48		58.13
1943	27.27	e	35.56	a	40.83	a	50.83	a	68.23		78.27		82.74		77.52		69.53		60.53	a	45.48	c	26.85	d	55.30
1944	28.71	c	32.42	c	38.89	c	51.50	d	74.07	b	77.69	a	81.57	a	85.90	a	69.55	a	59.43	c	50.77	d	33.46	c	57.00
1945	26.69	b	34.07	a	49.73	a	60.47		63.10	a	74.04	b	82.68		81.65		72.90	a	58.86	c	45.30	c	31.46	e	56.74
1946	31.26	d	31.81	b	53.56	d	54.46	b	68.04	c	78.37		81.43	c	77.54	c	75.67	c	66.54	c	50.44	n	39.43	h	61.87	b
1947	25.48	d	35.00	c	44.74	d	53.27	d	68.95	j	75.34	a	83.04	c	84.03	b	72.35	d	69.07	b	44.28	a	30.07	b	56.06	a
1948	26.52	f	29.74	b	41.50	e	54.27	d	61.13	a	71.57		82.42		82.90		74.13		60.06		50.13		35.35		58.47	a
1949	31.37	a	34.32		40.94		56.67		68.03		79.93		84.45		81.84		68.53		63.62	b	42.77		37.90		57.53
1950	32.97		26.07	a	35.86	b	50.40		69.43	a	75.63		81.16		78.90		65.43		58.84		51.13		35.60	a	55.12
1951	32.35		32.75		40.06		53.43		68.93	a	73.57		80.13		78.71		72.67		59.42		44.00		33.19		55.77
1952	31.97		31.93		39.58		55.13		62.52		77.13		88.19		81.52		72.37		58.32		45.77		35.84		56.69
1953	34.90		35.71		41.29		53.73		66.16		76.93	a	81.68		79.39		73.03		61.26		51.17		39.48		57.89
1954	24.61		35.61		39.61		52.07		61.52		73.53		77.06		76.65		67.30		60.19		45.50		33.19		53.90
1955	28.45		31.61		36.77	a	53.90		68.81		73.70		86.58		82.03		70.77		58.42		42.93		26.42		55.03
1956	33.84		34.14	a	36.52	f	49.80		60.42		76.13		76.77		77.58		65.47		61.42		48.53		32.61		56.07	a
1957	22.65		35.07		42.19		55.13		68.68		79.03		79.39		77.84		72.77		61.45		49.27		38.79	b	56.85
1958	33.06		30.08	d	43.81		56.62	a	64.21	b	71.46	b	79.07	d	79.68		71.10		56.94		45.67		26.55		54.85
1959	30.80	a	29.04		41.39		57.27		73.27	a	71.50		84.62	b	82.06		74.97		58.97	b	46.83		35.61		57.19
1960	32.27	a	37.34		36.94		54.67		73.42		79.14	a	81.43	a	81.68	c	73.52	a	58.48		47.97		33.13		57.50
1961	25.97		35.50		42.90	a	52.45	a	66.93	c	77.73		79.83	a	81.13	a	80.87		63.50	a	47.43		34.13		57.36
1962	30.10	a	28.37	a	45.32		55.27		65.61		78.40		76.84		77.84		68.40		58.10		44.73		33.87	a	55.24
1963	31.23		28.04		42.32		54.43		69.81		80.83		83.23	a	76.18	c	69.23		69.77		48.87		26.26		56.68
1964	-----	z	35.44	k	42.57	a	55.39	b	73.71		76.93		81.26		75.63	a	70.66	a	60.90		47.23		32.48		61.68	b
1965	29.47	a	32.75		42.61		55.47		70.61		80.73		80.52		81.43	a	73.07		59.00		43.97		34.06		56.97
1966	32.39		36.64		44.58		53.63		65.80	a	77.63		82.55		80.87		70.90		61.68		48.90		34.77		57.53
1967	33.55		29.75		38.68		52.63		61.32		79.63		81.23		79.87		72.17		60.13	a	42.17		34.71		55.49
1968	26.90		29.90		44.16		60.13		67.13		72.14	a	82.81		78.42		74.66	a	64.03		41.00		31.73	a	56.08
1969	31.55		34.57		40.45		55.07		67.32		77.23		78.68		81.29		70.77		59.42		46.63		35.63	a	56.55
1970	25.35		34.29		42.39		55.30		70.29		77.73		82.90		82.29		70.20		62.71		47.43		26.58		56.46
1971	25.32		32.68		41.48		52.60		68.00		80.83		83.74		78.10	a	74.63		66.26		44.13		34.06		56.82
1972	32.71		30.59		37.29		51.07		71.00		74.90		83.10		79.19		73.62	a	56.68		42.14	a	29.77	a	55.17
1973	33.39		33.39		47.48		58.57		64.35		77.30		83.52		83.42		70.10		60.71	c	44.80		40.87	a	58.16
1974	31.81		34.59	a	43.29		57.73		61.94		77.77		79.45		80.45		70.08	d	56.30	a	47.41	a	37.68		56.54
1975	33.35		33.43		42.68		51.31	a	73.30	a	78.48	a	83.52		81.68		68.50		61.90	a	51.67		33.73	a	57.80
1976	26.42		38.90		42.68		59.90		68.35		81.57		79.45		78.90		70.90		56.58		43.37		29.87	a	56.41
1977	27.32		34.71		50.39		57.40		75.62	b	72.67		82.84		80.26		70.00	a	60.47	a	49.27		33.13		57.84
1978	30.06		32.39		41.35		53.40		73.00		77.17		83.67	a	83.74		71.43		60.74		47.56	c	35.42		57.49
1979	31.39		29.29		47.35		55.73		68.55		79.27		85.81		79.03		73.63		58.65		51.70		37.32		58.14
1980	33.13		34.14		42.10		56.40		70.55		75.86	b	82.30	a	83.71		71.30		55.39		44.50		30.58		56.66
1981	26.16		43.57		45.71		58.47		71.65		77.77		82.33	a	80.14	b	68.77		57.29		46.13		35.94		57.83
1982	25.13	a	33.86		43.50	a	54.97		71.71		73.52	a	84.26		78.19		72.83	a	62.90		49.28	a	41.90	b	57.67
1983	34.73	a	37.50		44.52		55.73		65.19		81.07	a	84.71		83.29		78.17		60.87	a	46.57		33.29		58.80
1984	26.90	a	41.62		38.06		56.90		68.13	a	78.13		82.37	a	81.50	a	71.79	a	63.67	a	48.37		37.19		57.89
1985	26.45		35.93		46.26	d	57.21	a	70.00	c	73.60		83.41	b	79.87	a	74.93	a	61.97	a	44.76	a	32.77		57.26
1986	36.57	a	35.11		46.57	a	60.63		66.36	c	76.75	b	79.20	a	76.48	b	69.70		59.94		44.45	a	36.89	c	57.39
1987	33.40	a	35.12	b	46.17	a	60.64	b	70.55		77.59	c	80.89	c	80.31	b	70.93	c	62.29	c	48.47		37.10		58.62
1988	33.39		36.14	a	45.58		54.67		71.32		78.57		84.55		81.55		72.07		56.42		49.87		35.87		58.33
1989	35.06		34.54		41.71		53.30		71.81		77.10		84.10		79.58		73.83	a	63.52		45.47		23.42		56.95
1990	40.13	a	40.00	a	46.74		58.04	b	67.35		78.10		82.29		83.84		71.53		64.10		50.72	a	42.55		60.45
1991	33.90		40.86		46.03	a	60.40		74.97		82.21	a	82.35		83.58		71.20		63.29		48.03		35.43	c	60.19
1992	33.33	a	35.52		40.93	a	54.03		72.10		79.23		78.81		79.19		72.97		58.23		45.21	a	35.43	a	57.08
1993	35.03		29.14		44.87		57.17		68.10	a	74.67		80.29		81.58		71.11	b	54.55	b	46.87		34.55		56.49
1994	19.35		25.19	a	39.16		53.30		62.70	a	77.53		83.74		77.77		67.90	a	60.74		50.17		36.94		54.54
1995	30.84		28.54		39.97		50.66	a	63.81		78.27		81.63	a	81.94		69.73		64.42		42.30		29.81		55.16
1996	27.77		30.45		38.94		52.03		63.71		75.13		76.73	a	78.39		68.77		56.77		43.47		38.61		54.23
1997	27.68		34.04	a	36.75	c	50.97		60.45	b	77.04	b	79.97		77.35		68.17		57.19		43.52	a	34.65		53.98
1998	29.76	b	37.32		42.29		55.77		72.13		70.96	b	80.52		81.77		72.60		57.90		45.41	a	41.06		57.29
1999	29.33	a	36.27	b	42.42		55.90		69.65		80.69	a	83.44	d	79.87		76.72	a	56.68		49.97		36.90	a	58.15
2000	26.87	a	32.93	a	46.84		51.07		62.47	a	73.83	a	75.67	a	76.13		69.13		58.71		46.28	e	31.03		54.25
2001	28.60	a	32.61		37.48		53.00		70.41	d	77.57		79.16		84.20	a	73.80		62.73	a	50.57		39.42		57.46
2002	33.45		35.00		40.10	a	53.31	a	64.00	a	71.87		79.52		84.00		75.80		56.32		42.27		33.77		55.78
2003	22.45		26.32		38.97		50.73		62.48		74.80		79.97		79.19		72.80		57.58		47.73		35.55		54.05
2004	19.39		33.07	a	41.74		53.10		66.83	b	72.00		76.76	b	77.81		71.20		58.90	a	46.57	b	31.81		54.10
2005	25.87		34.18		37.94		55.87		57.73	a	76.80		80.45	b	81.13		73.80		58.42		47.33		33.58		55.26
2006	34.77		32.32		42.35		56.93		65.71		74.03		82.20	a	75.97	a	70.60		57.84		49.53		39.16		56.79
2007	30.72	b	25.54		40.35		50.40		67.10		74.93		78.65		79.73	a	72.31	a	62.90		44.50		29.35		54.71
2008	31.84		33.10		37.35		57.20		65.35		73.47		81.45		74.81		70.37		57.61		47.03		33.71		55.27
2009	23.65		32.18		40.29		57.30		65.71		69.53		74.13		80.16		70.97		53.65		50.30		33.87		54.31
2010	31.74		35.32		48.29		59.23		70.32		73.23		82.61		80.16		72.07		58.03		44.90		33.48		57.45
2011	28.03		30.04		40.19		53.40		64.00		73.27		82.10		78.45		72.37		59.16		51.73		38.65		55.95
2012	30.61		35.69		48.45		57.37		66.16		72.50		82.81		81.26		69.50		60.19		44.80		35.39		57.06
2013	29.81		32.14		40.94		52.63		65.97		74.77		80.74		78.32		70.17		62.13		44.57		27.16		54.95
2014	25.97		30.11		33.39		53.00		64.00		74.87		79.87		77.45		71.73		60.23		43.03		35.39		54.09
2015	26.57	a	18.71		35.32		52.33		71.97		69.40		78.29		80.48		76.30		57.77		49.23		39.45		54.65
2016	32.00		36.10		42.48		52.87		66.58		74.73		81.52		81.87		74.53		60.32		48.50		33.42		57.08
2017	33.81		33.96	a	35.13		55.57		62.26		75.07		78.84		78.00		75.07		66.19		45.67		28.87		55.70
2018	26.03		36.07		39.87		49.80		68.87		73.64	b	82.65		82.10	b	73.23		53.94		38.38	a	33.30	a	54.82
2019	27.68		30.11		38.61		51.70		60.81		73.53		83.06		79.06		70.37		57.83	b	41.34	a	34.10	a	54.02
2020	32.48		35.00	a	44.48		50.59	c	67.03	b	77.67		81.00		80.19		72.97	a	57.10		48.77		36.52		56.98
2021	32.19		30.21		43.90		58.43		68.10		78.70		75.19		79.68		72.47		61.48		48.17		34.65		56.93
2022	24.13		36.61		41.84		53.33		69.35		73.80		83.16		81.61		71.13		62.74		51.77		38.81		57.36
2023	36.74		35.19	a	43.52		55.37		67.20	a	71.33		82.10		76.68		73.80		64.68		45.70		39.00		57.61
2024	32.65		37.28		43.26		53.53	k	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.73	i
Period of Record Statistics
MEAN	29.78		32.76		42.01		54.98		67.82		76.35		81.67		79.93		72.05		60.40		46.18		33.74		56.50
S.D.	4.00		3.74		3.65		3.03		3.81		2.91		2.47		2.43		2.73		3.28		3.10		4.10		1.42
SKEW	-0.33		-0.36		0.37		0.39		-0.15		-0.18		-0.32		0.38		0.01		0.02		-0.42		-0.46		0.12
MAX	40.13		43.57		53.56		63.90		76.90		82.37		88.19		88.77		80.87		69.77		51.77		42.55		60.45
MIN	19.35		18.71		33.39		48.23		57.73		69.40		74.13		74.66		63.17		50.77		34.80		19.23		53.89
YRS	125		127		128		128		127		125		126		126		125		124		126		125		112