WATERTOWN REGIONAL AP, SD

Average of Average Temperature (Degrees Fahrenheit)

(398932)

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
1893	5.47		6.20		20.24		39.17		55.16	b	66.50	r	-----	z	-----	z	-----	z	-----	z	28.83		12.94		24.00	e
1894	6.74	b	12.82		33.48		47.31	a	56.84		71.88	b	-----	z	-----	z	-----	z	-----	z	22.97	o	27.83	d	36.70	e
1895	6.79	j	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1896	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1897	-----	z	-----	z	22.21	g	43.13		54.32		60.28	a	69.03		62.63		64.77		47.27		25.03		14.84	c	49.03	c
1898	18.87		18.27		28.58		43.67		53.97		64.55		67.73		66.31		59.67		39.98	b	25.18		14.02	b	41.73
1899	12.16		3.10	b	14.79		41.48		53.37		63.88		67.77		68.69		53.05		45.74		39.10		15.85		39.92
1900	18.39		6.29		26.16		49.18		58.66		66.83		68.05		73.77		57.61	b	53.85		26.20		23.20	f	45.91	a
1901	17.60	e	12.84	c	29.19	d	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	19.87	i
1902	14.88	g	15.29	b	-----	z	42.15		57.14	c	60.21	a	68.68	a	65.52	i	56.61	p	47.53	b	30.04	b	9.78	a	41.35	d
1903	12.06		8.36		28.69		43.84	a	55.56		61.88		66.45	c	64.44	d	54.81	a	47.07	c	29.54	e	11.77	a	40.37
1904	5.21		3.67	b	25.63	d	39.25	d	53.52		62.03		64.33	a	64.55	b	57.13	c	48.56		34.77	b	16.62	a	39.61
1905	4.85	e	9.23		35.60		42.60		50.79	b	62.22	e	65.65	a	69.10	a	61.57	a	43.17	b	33.48	b	20.48		41.56
1906	17.96	h	17.00	c	20.09	b	47.06	c	54.66		61.34	a	64.95		66.76		60.67		43.89		27.76	a	16.97		43.74	a
1907	2.20	a	16.83	a	30.12	b	34.85	c	44.88	b	64.52	i	66.29	c	66.43	c	53.98	a	43.03	m	31.52		22.91	b	37.00	b
1908	19.78	b	17.06	d	28.98	d	45.67	d	54.72	a	61.56	f	67.33	g	65.69	d	64.57	b	45.92		35.41	a	19.65		39.74	b
1909	11.60		17.09		28.83	b	36.88	a	54.71		65.78		69.74		73.84	f	60.45		45.45	c	32.65		8.95		39.28	a
1910	12.33	a	8.98		44.98		48.62	a	52.29		66.55		71.89		66.79		58.98	a	52.13		-----	z	18.53	b	45.64	a
1911	7.85		17.68		35.78	f	43.17	a	60.37		70.76	a	68.34		64.65		58.52		42.61		18.53		18.63		42.83	a
1912	-2.57	b	13.48	b	19.19		45.67		55.71		61.80		68.53		64.98		55.61	b	46.94		35.09	b	19.29		40.31
1913	10.94		10.85	a	21.09	b	44.88		52.21		67.72		67.21		71.26		59.15		41.27		37.28		25.44		42.44
1914	16.73		5.04		27.13		41.83		55.71		65.12		72.45		66.71		59.53	a	51.48	b	32.10	i	8.55		42.75	a
1915	9.10		21.05		23.90		52.13		50.79		59.38		64.11		62.68		57.33		48.24		34.28		19.47	b	41.87
1916	0.52	a	7.21		25.73		40.27		52.92		59.47		75.82		67.48		56.13		42.19		30.47		8.00		38.85
1917	6.52		3.25		23.98		39.10		51.53		60.40		71.67	a	65.60	a	57.50		35.52	a	38.53		6.72	a	38.36
1918	1.35	a	13.04		35.40		39.09	a	55.92		64.63		66.79		69.56		54.47		50.71		31.96	b	23.60		42.21
1919	24.12	a	16.11	a	28.63	a	44.25		56.15		68.08		73.11		69.56		62.48		40.95		23.62		13.06		43.34
1920	10.56		17.78		29.42		35.58		56.00		65.59	a	69.52		67.10		62.60		53.32		29.86	a	20.39		43.14
1921	21.50		26.52		33.82		47.28		57.00		72.17		73.16		69.03		59.65		49.40		24.50		21.40	a	46.29
1922	11.56		6.60	b	29.42		45.43		58.81		67.75		68.40		73.15		64.28		50.60		34.93		15.82		43.90
1923	17.77	a	11.44	a	23.21		42.97		56.58		67.34	b	73.29		67.15		62.67		45.27		37.48		27.10		44.36
1924	7.74		22.09		27.10		44.32		48.81		61.57		67.26		66.43	a	56.23		54.52		31.55		8.18		41.32
1925	10.37		21.09		35.08		52.11	c	53.63		63.43		67.23		70.45		62.80		34.23		30.90		16.31		43.14
1926	13.05		24.23		26.34		42.68		60.90		61.60	a	70.27		68.38	b	55.57	b	45.26		23.16	b	12.95		42.03
1927	13.82	a	20.02	a	32.34		43.68		50.95		62.17		65.76		64.06		60.38	a	50.50		26.05		2.50		41.02
1928	14.16		20.50		32.37		36.98		59.42	a	60.38		70.13	a	68.90		56.20	b	45.65		32.30		23.98		43.41
1929	-1.78	a	4.55		32.92		44.47		51.50		63.55		71.66		69.68		55.55		47.31		26.12	a	15.90		40.12
1930	2.66		28.41		29.22	a	47.50		54.48		64.82		75.65		73.44		59.45		44.35	a	32.54	b	23.27	a	44.65
1931	25.73		31.16		30.92		47.08		53.52		71.88		75.07	a	69.31	b	67.43		51.10		35.76	a	25.08		48.67
1932	12.47	a	19.33		21.77		45.93	b	59.70	a	69.90		73.65		71.74		59.92		44.04	c	30.15	c	13.59	b	43.51
1933	22.40	a	13.65	a	31.50		43.88		56.97		76.75		76.23		70.11		66.22		46.32		31.62		15.83	a	45.96
1934	19.71		20.46		29.06		45.12	a	68.45		71.28	a	75.79		69.65		55.32		52.53		36.05		15.61		46.59
1935	9.47		27.80		34.50		40.75		52.19		62.83		77.94		71.29		62.48		45.47		24.41	a	16.12	a	43.77
1936	-2.11		-6.34		29.95		39.68		62.61		67.50		81.26		74.08		64.68		43.94		27.05	b	17.21	b	41.63
1937	-1.27		10.80		26.05		40.53		59.26		65.17		74.00		75.90		61.50		44.90		28.40		14.82	a	41.67
1938	10.60	a	15.50		34.31		46.95		54.23		66.58		72.77		74.26		63.37		54.97		28.18		21.42		45.26
1939	18.94		7.04		30.16		44.17		63.61		66.77		73.55		70.65	a	63.55		46.66		36.92		28.29		45.86
1940	4.40		17.38		25.50		39.10	e	55.77	c	64.75		73.90		66.23		63.48		52.53		23.20		23.59	c	42.49
1941	12.73		10.86		25.79		47.97		59.94		65.08		70.95	c	71.10		60.53		46.84		31.60		23.69		43.92
1942	18.34		17.88		32.82		48.12		51.45		62.98		68.16		67.74		53.15		44.94		30.69	f	12.97		43.50	a
1943	2.05		16.00		21.06		44.55		51.47		64.90		73.05		69.74		55.63		47.66		28.53		21.48		41.34
1944	23.85		15.66		21.02		39.42		59.60		65.33		69.66		67.74		57.84	h	48.60		32.87		18.32	a	42.01	a
1945	14.35	a	17.54		36.24		40.35		50.23		58.82		69.40		68.94		57.18		46.81		27.53		8.79		41.35
1946	10.86	b	13.16		37.22	a	48.98		51.29		65.18		71.05		66.77		57.53		44.95		28.25		18.50		42.81
1947	19.90	a	12.52	a	25.73		39.32		50.89		61.52		69.77		74.76		59.60		53.77		22.95		13.12	b	41.99
1948	9.31	d	10.14		22.44		46.25		54.98		62.75		71.74		69.32		63.37		47.27		31.50		17.56		42.22
1949	6.63		10.04		27.53		45.47		59.18		66.30		72.02		71.94		55.32		46.74		37.05		16.97		42.93
1950	0.40		16.00		22.71		33.53		51.71		65.35		66.66		64.48		59.20		48.90		24.33		12.63		38.83
1951	5.82		18.36		16.98		39.85		56.81		59.85		68.15		65.79		53.65		43.94		25.02		9.76		38.66
1952	8.00		18.57		20.74		45.75		54.89		67.88		70.66		67.98		62.32		43.06		31.40		19.77		42.59
1953	13.02		17.77		29.79		37.65		54.00		66.37		69.40		71.11		59.37		53.05		34.55		17.56		43.64
1954	4.63		30.86		24.71		42.88		49.84		64.82		72.13		68.73		58.55		44.15		36.40		21.87		43.30
1955	14.65		9.20		24.48		51.55		60.84		64.20		74.65		72.85		59.35		48.48		20.07		8.37		42.39
1956	8.18		9.64		23.58		37.02		55.15		70.50		67.63		68.52		56.55		52.34		29.03		21.98		41.68
1957	4.56		18.06	b	28.16		42.48		52.52		63.28		75.26		68.68		56.35		46.03		30.80		24.26		42.54
1958	19.60		13.43		29.02		43.35		58.27		60.10		67.53		70.81		61.45		49.68		30.87		12.24		43.03
1959	6.68		10.16		32.45		43.32		55.55		69.07		71.69		73.29		59.38		41.18		21.98		26.16		42.58
1960	11.03		11.88		14.29		42.28		55.53		62.93		72.06		70.76		60.32		47.81		31.88		15.68		41.37
1961	10.53		19.88		33.92		38.50	a	51.87		67.07		69.10		73.15		55.68		48.06		30.03		12.56		42.53
1962	7.30	a	11.93		23.98		41.88		57.53		64.75		67.69		69.65		56.05		49.26		34.83		18.84		41.97
1963	2.95		16.22	a	33.92		45.23		55.08		68.75		71.39		69.23		61.48	b	56.13		34.80		10.15		43.78
1964	18.71		21.76		21.26		44.43		58.66		66.62		74.76		66.34		56.37		46.73		28.77		9.21		42.80
1965	5.29		11.16		16.06		41.65		56.15		64.30		70.61		67.77		48.37		49.47		29.78		24.60		40.43
1966	1.60		12.80		33.74		37.37		52.21		65.68		75.69		65.71		57.60		45.61		25.58		17.85		40.95
1967	14.32		9.12		31.06		41.78		50.39		63.75		68.32		66.73	a	59.27		44.95		29.80		17.27		41.40
1968	12.21		13.90		36.50		44.27		51.55	a	65.73		69.02		68.15		58.43		46.74		31.20		12.69		42.53
1969	4.00		16.59		17.26		44.90		56.94		58.60		69.55	a	71.39		61.00		41.58		32.60		18.94		41.11
1970	2.61		16.07		24.06		41.13		56.16		67.73		72.03		70.67	a	60.03		44.90		27.97		13.73	a	41.43
1971	4.00		14.80		28.65		44.75		53.39		68.88		67.10		70.00		58.63		47.98		29.83		13.87		41.82
1972	4.58		8.62		26.48		40.43		57.97		65.55		68.26		68.95		57.98		42.82		28.98		9.58		40.02
1973	15.18		20.73		36.56		42.28		55.05		66.82		71.21		74.26		57.15		52.19		30.30		12.84		44.55
1974	7.87		16.48		27.98		44.98		52.48		65.28		75.95		66.11		54.98		48.81		30.90		20.87		42.73
1975	13.27		11.95		20.58		37.00		57.76		65.27		75.45		69.50		55.27		48.74		31.65		16.92		41.95
1976	10.89		24.69		29.39		47.88		54.11		69.10		74.73		73.29		60.77		42.10		24.55		12.02		43.63
1977	1.00		21.84		33.08		50.83		64.71		67.83		72.48		64.53		58.90		45.76		27.35		10.55		43.24
1978	-0.98		6.14		25.31		41.85		57.00		65.88		70.44		71.03		64.75		46.73		26.70		11.61		40.54
1979	-1.48		3.64		23.79		39.03		51.19		64.98		70.58		67.16		62.03		45.15		29.13		24.74		40.00
1980	13.20	a	12.88		25.34		47.48		58.47		66.48		71.00		67.69		59.42		44.11		35.17		17.89		43.26
1981	17.98		22.27		35.98		49.08		54.85		65.60		71.65		69.35		60.23		45.45		35.78		13.23		45.12
1982	-1.68		14.52		26.79		41.18		57.56		60.72		72.66		69.48		57.88		45.89		26.85		22.69		41.21
1983	19.44		25.20		30.50		39.42		52.87		64.53		75.24		76.21		59.50		45.40		28.64	b	-0.53		43.03
1984	13.79		26.91	a	23.10		43.80		53.84		65.88		71.53		71.05		54.38		47.35		32.65		14.03		43.19
1985	9.27		15.88		34.90		49.60		61.24		62.52		-----	z	-----	z	56.75		45.94		18.80		6.66		36.16	b
1986	17.79		11.23	d	33.33	b	45.88		57.44		68.68		72.69		65.73		57.50		47.73		26.37		24.69		44.09
1987	21.56		31.21		34.42		52.37		63.44		71.20		75.31		68.42		61.17		43.55		36.93		23.63		48.60
1988	9.10		13.43		33.42		47.00		63.74		74.77		76.10		72.85		61.25		43.89		30.92		20.16		45.55
1989	20.05		5.93		25.40		44.67		56.74		64.58		74.95		70.24		59.33		47.47		27.40		9.02		42.15
1990	25.44		21.34		34.27		43.78		54.94		66.90		69.05		69.21		63.90		45.74		34.28	a	13.90		45.23
1991	11.52		25.70		33.00		47.33		59.34		69.90		71.05		70.03		59.70		44.89		24.25		23.26		45.00
1992	21.19		27.17		34.74		41.67		58.79		63.30		62.85		63.48		58.22		45.82		26.83		14.29		43.20
1993	10.32		11.73		25.66		41.55		55.24		61.88		68.15		68.48		54.93		45.65		26.65		17.94		40.68
1994	0.13		7.38		31.39		44.52		61.34		67.60		69.19		66.53		61.33		49.45		34.17		21.11		42.84
1995	14.84		18.25		30.39		38.35		53.47		67.73		71.13		72.56		58.17		44.94		25.88		18.18		42.82
1996	5.27		17.22		22.77		39.61	g	-----	z	-----	z	67.39		68.82		57.65		45.26		19.09	a	7.02	a	34.50	c
1997	4.44		14.73		23.24		37.53		50.94		67.84	a	69.44		66.94		61.07		47.73		25.22		23.52		41.05
1998	14.66		27.57		24.60		45.65		59.65	a	62.05	a	70.69		69.84		63.68		48.42		32.82		22.32		45.16
1999	11.00	a	26.70		32.63		45.37		56.92		65.23		72.66		69.23		57.13		45.89		39.63		23.97		45.53
2000	13.98		27.07		37.74		43.30		58.02		64.57		70.56		69.61		59.33		49.37		24.33		5.28	b	43.60
2001	15.31		4.52		22.23		44.03		57.31		65.97		73.85		70.82		60.17		45.66		40.43		21.94		43.52
2002	19.08		26.57		19.06		42.17		50.60		69.32		75.18		68.47		61.32		37.58		30.40		22.43	a	43.51
2003	14.06		11.21		28.02		45.25		54.24		64.33		71.03		71.58		57.72		49.10		26.73		22.40		42.97
2004	9.79		18.12		34.61		45.33		53.94		61.75		68.71		63.77		63.32		47.90		36.03		22.18		43.79
2005	11.95		23.04		30.44		48.10		54.39		68.52		73.11		68.92		64.12		47.66		32.88		16.61		44.98
2006	25.32		15.84		31.32		49.32		57.15		67.18		75.13		70.31		55.70		42.95		31.80		26.13		45.68
2007	15.61		9.38		33.73		41.78		60.16		68.33		73.79		68.60		61.27		50.71		31.48		12.24		43.92
2008	8.98		12.36		26.53		39.47		52.73		62.85		71.13		69.24		59.40		45.45		30.73		8.87		40.65
2009	6.32		15.41		27.24		41.68		55.48		62.75		65.68		65.45		62.25		39.11		38.62		10.53		40.88
2010	8.89		11.25		34.19		50.50		55.39		65.47		71.24		72.87		57.48		48.56		30.42		11.42		43.14
2011	5.23		9.98		21.65		41.03		53.69		64.75		75.23		69.56		57.95		50.16		32.47		24.47		42.18
2012	20.16		23.22		43.94		47.33		58.94		68.87		77.23		68.42		59.58		43.77		31.87		16.92		46.69
2013	12.76		14.93		20.21		34.34	b	54.35		64.80		70.10		70.79		65.37		44.42		29.03		7.94		40.75
2014	8.47		6.79		24.37		40.45		55.44		64.72		67.55		67.74		59.60		47.42		21.50		21.81		40.49
2015	17.26		10.91		33.74		47.35		54.69		67.13		71.52		67.98		65.32		51.35		38.63		23.95		45.82
2016	16.05		23.93		39.03		46.30		58.47		70.52		72.27		71.26		62.05		49.47		39.72		13.27		46.86
2017	13.85		26.98		30.06		43.75		54.97		66.65		71.97		64.97		61.95		46.26		31.02		17.87		44.19
2018	13.79		8.71		27.53		33.82		62.35		70.10		70.65		68.52		60.55		41.50		24.10		21.05		41.89
2019	9.13		3.41		22.65		42.27		51.73		66.85		71.31		66.52		62.43		40.53		28.55		18.53		40.32
2020	13.90		15.10		32.21		41.15		53.97		70.48		72.82		70.74		59.13		40.39		35.83		22.94		44.06
2021	22.23		8.12		36.69		43.02		55.55		72.00		72.76		70.61		63.28		50.60		34.42		19.97		45.77
2022	9.35		13.02		29.10		37.27		56.25	a	69.82		72.26		69.97		63.28		47.15		28.95		12.81		42.43
2023	13.95		15.20		19.50		39.03	a	61.90		71.98		69.66		71.60		65.52		46.81		34.45		30.02		44.97
2024	14.47		29.12		32.16		45.53	l	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	25.25	i
Period of Record Statistics
MEAN	11.11		15.33		28.34		43.28		55.69		65.69		71.04		69.01		59.49		46.62		30.28		16.95		42.81
S.D.	6.80		7.10		5.82		4.02		3.66		3.44		3.23		2.81		3.28		3.76		4.76		5.96		2.02
SKEW	0.00		0.14		-0.01		-0.06		0.45		0.32		0.11		0.09		-0.15		-0.23		-0.15		-0.24		0.36
MAX	25.73		31.21		44.98		52.37		68.45		76.75		81.26		76.21		67.43		56.13		40.43		30.02		48.67
MIN	-2.57		-6.34		14.29		33.53		44.88		58.60		62.85		62.63		48.37		34.23		18.53		-0.53		38.36
YRS	127		129		127		127		127		124		124		123		124		125		124		127		112