FLANDREAU, SD

Average of Average Temperature (Degrees Fahrenheit)

(392984)

File last updated on April 20, 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	7.34	b	11.69	b	24.52		39.88		53.90		69.25		70.97		67.69		61.74	a	45.25	a	28.40		12.94		41.13
1894	6.84	b	14.25	b	34.65		48.20		59.79		72.65		76.71	b	72.08		62.92		48.42		28.48		26.45		45.95
1895	5.74		10.80		29.63		55.20		57.76		64.73		69.74		69.26		64.33		42.71		28.28		17.33	d	42.96
1896	17.39	c	23.68	a	23.06		48.03		61.89		65.63		68.66		69.81		57.32		44.91	b	17.75		23.39		43.46
1897	9.62	b	14.46		22.32		45.03		57.23		63.05		70.92		63.81		69.03		50.98		29.45		15.00		42.58
1898	21.98		20.59		32.65		46.45		56.58		67.03		70.73		70.11		63.23		44.65		28.10		14.07	d	44.68
1899	16.37		8.71	d	17.66	b	46.03		57.53		66.53		71.32		72.26		59.93		51.32		41.43		18.68		43.98
1900	21.77		-----	z	28.29		50.87		61.13		67.58		68.60	a	73.84		60.00		55.82		26.60		21.81		48.76	a
1901	16.89	h	13.56	d	30.52	d	48.53		57.26		65.43	a	76.82	a	71.25	a	58.08		50.56		30.79	a	15.17	a	47.09	a
1902	16.12	c	16.41		34.28	a	43.27	b	58.76		60.80		69.19		65.73		55.52		49.73		33.53		12.55	b	42.99
1903	15.66		13.02		31.50	a	45.63		56.37		61.35		67.35		65.11		57.05		49.88	a	28.72	a	14.41	b	42.17
1904	9.29	b	6.55	a	30.40	a	41.67		56.80	a	63.00		66.21	b	65.53		58.07		49.07	a	38.53	a	17.70	a	41.90
1905	5.97		9.67	a	36.82	c	43.85		53.29		65.18	b	66.11		70.79		63.72	a	44.94		35.28	a	23.89		43.29
1906	21.31		19.14		21.00		48.78		57.35	a	62.48		66.48		69.31		62.90		47.53		29.30	b	20.23		43.82
1907	8.08	e	20.08	b	34.33	a	36.38		47.35		63.32		67.90		67.64	b	57.09	b	46.16	b	32.83		24.23	c	42.12
1908	18.96	d	16.20	a	30.04	c	47.47		54.85		62.13		68.48		65.45		66.20		46.60		35.08		20.48		44.33
1909	12.89		17.23		28.45		38.12		55.18	a	64.45	a	68.02	a	74.46	d	59.68		46.78	a	34.07		7.73	g	45.39	a
1910	14.02	b	10.86		47.35		51.38	b	54.13	d	66.57	b	71.18	f	67.52		60.78	a	54.36	b	-----	z	20.27		44.72	b
1911	11.03	a	20.37	a	38.59	b	44.03	a	62.21	c	73.67		70.73	a	66.16		60.80	c	44.66		23.85		22.55	b	44.89
1912	0.85		17.52	d	22.73		49.07	b	57.14	c	63.27		70.76	b	67.84	c	57.10		50.26	b	37.42		24.63		43.22
1913	17.15	a	15.61		28.10	a	47.80	b	55.05	a	68.93		69.59	d	72.69		62.74	a	-----	z	-----	z	-----	z	48.63	c
1914	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1915	-----	z	-----	z	29.88	n	54.22		51.73		61.98	a	65.71		63.15		58.48		50.48		36.57	c	21.18	a	51.50	c
1916	5.06		10.69	b	29.81		43.12		56.32		61.98		77.10		70.56		59.85		45.40		32.10		10.26		41.85
1917	9.56		8.00		27.37		40.88		52.34		62.98	a	72.45	a	67.32		59.07		39.03		39.08		8.16		40.52
1918	4.50	b	18.04	a	39.28	a	41.92		60.37		67.60		70.12	b	70.82	a	55.33		50.61		35.98	b	25.42		45.00
1919	23.45	c	16.48	f	30.47		44.22		55.33	d	68.45	a	73.32	c	70.62	a	63.38	d	42.00	b	26.42		12.82	a	46.41	a
1920	13.10		18.96	a	31.63		37.00		56.81		66.32		70.23		67.23		63.33		54.24		30.98	b	20.92		44.23
1921	22.17	d	27.43		36.44		48.84	a	57.77		72.43		74.76		69.10	a	62.91	a	52.31	e	26.24	a	22.55	a	47.75
1922	14.81	d	9.71		32.31	b	46.69	c	60.12	c	69.62	a	68.95	a	72.45	a	65.55		51.37	a	36.96	b	20.26	b	45.73
1923	21.28	b	16.67	d	26.20	c	46.21	b	58.03	b	69.43	h	-----	z	67.07	a	-----	z	49.33	g	39.72	e	-----	z	39.31	e
1924	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	66.88	a	67.90	f	55.79	i	58.79		36.78	a	11.27	a	43.43	h
1925	10.67	a	21.91		37.24		53.91	a	55.45		65.87		69.73		71.97		66.12		35.63		33.39	b	18.24		45.01
1926	15.16		25.24	a	29.37		44.62		63.39		64.03		72.26		70.11		58.59	b	48.00		26.90	a	14.75	a	44.37
1927	17.16		22.91		33.92		44.92		52.70	a	63.13		66.50		66.09	b	61.67		51.19		26.14	a	4.23		42.55
1928	14.11		20.98	b	30.74		35.05	a	56.38	a	56.32		66.05		69.53	a	60.93	a	49.95		34.28		26.33	e	43.39
1929	4.08	a	11.12	b	35.26		46.12		53.81		65.17	a	72.32		71.77	a	57.03	a	49.71		29.27	h	19.37	a	44.16	a
1930	6.05	a	31.79		33.63		49.97		57.19		65.45	a	77.63		74.32		62.47		48.55	a	36.97		25.55		47.46
1931	-----	z	-----	z	-----	z	49.20		56.08		73.53		75.11		71.24		67.95		51.50		36.15		25.77		56.28	c
1932	12.98		19.88		22.53		47.03		59.23		68.92		73.29		70.03		59.33		44.62	a	28.55		14.55		43.41
1933	24.18		13.48		31.53		44.38		55.27		75.08		73.02		68.24		65.72		46.94		32.95		18.47		45.77
1934	20.92		21.70		29.18		46.17		69.05		70.55	a	74.61		68.85		55.20		52.50		36.63		16.45		46.82
1935	12.45		27.70		34.97		41.80		51.76		62.68		78.00		69.84		61.13	c	44.10	a	25.43		16.76		43.88
1936	-0.40		-6.48		30.30	a	39.70		61.79		65.98		80.05		74.00		65.52		46.06		30.18		21.08		42.32
1937	1.42		13.26	c	28.48		42.28		59.34	b	64.42		74.73		76.85		62.76	a	45.74		30.10		14.98	a	42.86
1938	11.31		17.48		36.50	a	47.52		55.73		67.72		73.56		74.88	a	63.47		-----	z	31.28		23.10		45.69	a
1939	21.53		8.34		31.40		45.02		64.76		68.27		74.21		70.18		65.59	a	48.37		37.52		29.40		47.05
1940	5.23		18.95		25.79		43.58		56.84		68.02		76.27		68.45		66.60		56.27		26.88		23.31		44.68
1941	17.24		15.91		28.35		49.77		63.53		67.65		74.08	a	73.94		64.02		50.23		34.88		27.38	a	47.25
1942	20.45		21.29		34.58		52.42		54.05		66.20	b	70.97		70.35		56.33		49.10		33.78		16.05		45.46
1943	7.16		23.29		26.15		47.15		54.18		67.98		73.13		71.11		57.70		49.58		31.43		24.10		44.41
1944	27.35		20.36		24.35		41.20		61.87		67.60		69.81		68.92		60.52		50.68		34.65		20.40		45.64
1945	17.16		22.20		38.71		42.90		51.97		60.53		70.16		70.44		59.17		50.06		31.08		11.18		43.80
1946	15.50		20.23		41.30	a	51.87		54.27		67.38		71.68		67.24		58.66	b	47.31		29.97		23.41	b	45.74
1947	23.18	a	14.21		28.34		41.53		52.66		63.22	a	71.10		76.73		62.37		56.34		26.62		17.42		44.48
1948	11.08		15.19		27.37		50.38		56.66		64.63		71.63		70.19		65.80		49.13		32.78		18.94		44.48
1949	11.44		14.38		29.68		46.38		61.10		68.52		73.77		72.35		57.37		49.87		39.98		19.95		45.40
1950	5.13		19.34		24.95		36.62		52.89		66.65		67.50		66.44		61.05		51.97		28.87		15.60		41.42
1951	11.30	a	22.41		19.37		40.88		57.96	g	61.98	a	69.76		67.98		55.52		46.92		27.28		12.50		39.63	a
1952	11.52		22.64		23.76		47.53		56.92		69.85		72.66		69.56		63.02		44.97		33.92		23.88	e	45.02
1953	16.68		20.77		31.33	a	40.23		56.39		69.05		71.61		71.84		60.88		54.71		36.92		18.86	b	45.77
1954	8.43	a	32.59		26.61		47.53		52.31		67.97		75.02		70.31		61.45		46.26		39.18		22.94		45.88
1955	17.73	a	13.14		28.53		54.25		62.82		65.13		77.63		75.94		62.48	a	51.67	a	23.88		11.03		45.35
1956	11.37		13.05		26.84		40.42		59.13		72.98		69.55		70.40		60.80		56.47		32.52		24.68		44.85
1957	8.97		21.59		30.58	a	45.40		55.84		65.07		77.45		70.61		58.32		47.82		32.85		27.92		45.20
1958	23.26		16.82		31.29		46.13		61.27		63.88	f	69.13		73.16		63.77		51.84		34.03		16.24		44.27	a
1959	10.90		13.57		34.77		46.15		58.00		71.07		72.40		74.68		60.45	a	43.05		23.10		27.92		44.67
1960	12.19		14.73	a	17.55		46.20		57.05	b	64.85		72.79		73.32	t	61.52		49.32		35.52		18.65		40.94	a
1961	12.65		21.41		35.29		40.30	b	53.87		67.73	f	70.56		72.66		59.45		50.47		31.85		15.44		42.18	a
1962	12.48		16.79		24.23		44.72		60.90	b	66.43		69.92		71.00		58.60		51.79		38.08	d	22.63	a	44.80
1963	5.42		18.74	a	37.73		49.40		58.18		71.78		73.58		70.56		63.65		58.29		37.25		11.73		46.36
1964	21.84		25.66		25.68		47.64	a	61.57	j	69.30		76.05		67.08		59.82		48.74		32.83		13.71		44.39	a
1965	9.73		12.55		19.40		44.85		60.06		67.15		71.73		69.40		52.83		51.66		32.67		27.45		43.29
1966	6.03		15.84		37.16		40.87		55.23		67.93		77.45		67.95		60.05		47.02		28.69	a	18.28	a	43.54
1967	18.27	a	11.39		33.77	a	44.40		51.85		64.80		69.40		67.29		58.87		45.67	a	30.72		19.85	a	43.02
1968	12.15		15.02		36.73		45.59	a	51.58	a	67.07		69.53		69.13		58.12		47.55		32.33		15.52	a	43.36
1969	6.29		16.48		16.50	a	45.14	b	58.17	a	59.52		71.15		70.77	a	60.45		42.52	a	32.10		19.27		41.53
1970	1.29		15.80		24.50		43.08		57.55		68.23		72.27		70.10		59.77		45.42	a	29.63		14.84	b	41.87
1971	6.79		15.23		28.08		46.60		54.11		70.07		67.08		69.44		59.86	b	50.06		31.33		14.82		42.79
1972	5.84		9.16		27.71		40.77		58.37	a	65.72		68.37		68.92		57.35		42.89		30.80		13.00		40.74
1973	16.12	a	19.80	a	37.71		43.95		54.42		67.57		70.52	a	72.73		58.28		51.74		32.75		13.76	b	44.94
1974	7.23	a	17.66		30.22	a	45.70		54.05	a	64.70		75.69		65.83	a	55.03	a	48.32	a	32.90		21.29		43.22
1975	14.66	b	11.93		20.42		38.08		59.19		65.38		74.52		70.44		55.78	a	49.50	b	34.03	a	17.39		42.61
1976	11.10		26.45		29.74	b	49.48	a	54.79		69.52		74.00	a	72.48		59.79	a	41.48		26.02		13.38	a	44.02
1977	1.40	b	22.39		33.07	a	-----	z	65.57	a	67.88	a	72.90		64.68	a	60.17	a	45.73		28.67	a	13.47	a	43.27	a
1978	-0.97		6.61	a	27.15	d	44.15		58.03		66.02		69.83	a	69.88	b	66.04	e	46.48	a	28.57	b	12.70	a	41.21
1979	-1.45		4.08	b	24.77	a	39.75	b	52.11		65.83		71.55		66.76		61.68		45.90		30.05		24.05	b	40.42
1980	15.90		15.09	a	26.79		47.52		58.50	a	68.19	a	72.47	a	69.44		60.57		44.32	a	35.52		20.30	a	44.55
1981	18.38	a	23.52		36.32		51.05		55.26		66.60		71.74		68.60		59.37	d	45.93	a	36.55		15.53		45.74
1982	-0.69	m	14.61	j	29.88	g	42.26	i	58.20	d	60.81	d	72.26	d	70.31	g	58.45	h	47.04	g	27.36	i	23.76	f	63.76	i
1983	15.74	h	23.85	k	29.60	f	39.66	b	52.38	f	64.48	d	75.62	f	76.15	g	58.52	g	46.50	j	31.67	d	-2.40	f	45.27	i
1984	14.69	j	27.80	i	21.69	g	44.41	c	52.87	h	67.44	d	69.84	f	72.12	g	53.65	g	47.67	k	30.97	l	15.47	k	55.92	j
1985	5.24	l	15.28	l	36.38	g	46.84	h	59.30	h	60.80	h	68.90	f	63.25	k	55.76	i	44.14	i	20.40	f	7.02	f	-----	z
1986	17.76	h	12.32	f	31.95	j	45.54	f	56.48	h	67.65	g	71.54	g	63.62	k	57.94	f	46.42	f	26.53	a	24.47	a	25.50	j
1987	21.10	a	31.62		34.02	a	50.60	a	61.77	a	69.28	a	73.47		66.25	a	59.79	b	42.79		38.05		23.73	a	47.71
1988	5.52	c	11.04	a	33.24	d	43.12	b	62.94		73.45		72.79	b	70.34	b	59.50	a	42.88	b	32.80	b	21.65	d	44.11
1989	22.24	d	7.78	e	25.76	b	44.12	a	56.26		64.86	a	73.22	b	68.66		59.27	b	46.29	c	28.22		10.73	c	42.28
1990	25.34	b	22.02	b	34.03	a	44.66	a	53.73		67.52		68.53		68.21		63.43	b	45.15		33.72		13.87		45.02
1991	9.32	a	27.08	b	33.88	a	47.75		59.65	a	71.45		70.43	a	70.02		58.95	a	44.42	a	23.33	a	22.26		44.88
1992	23.71		26.89	a	34.37		39.75		58.84		63.65		62.82		62.88	a	57.12	b	45.81		28.77		15.77		43.37
1993	9.98		10.98		24.16		41.55		54.84		62.17		68.79		68.61	d	54.32		44.83	b	27.45	a	18.18		40.49
1994	3.29	b	7.16		33.32		43.64	a	59.68	a	67.75		67.53	a	66.02	b	61.42		49.15		34.05	a	19.95	a	42.75
1995	14.02		19.30	a	29.92	a	38.71	b	52.89		67.03		71.05		71.79		56.60	a	45.27		25.27	b	20.27		42.68
1996	7.54	c	17.38		22.74		39.67	a	52.53	a	67.00		-----	z	67.93	d	57.98	a	47.13	a	20.76	a	8.94		37.24	a
1997	3.21	e	16.04	a	26.42	a	39.98		51.45		68.00	a	70.63		67.82		60.97	a	48.52	a	26.57		24.85		42.04
1998	16.82		30.43		26.05		45.76	a	61.71		63.45		71.02		69.98		65.05		49.52	a	33.98	a	23.62	a	46.45
1999	10.34		27.20		32.27		45.43		57.48	a	65.25		73.23	a	68.58	a	58.42		46.18		40.40	a	23.47		45.69
2000	15.73	a	27.05		37.28	b	42.98		58.24		64.54	c	70.52		69.50	b	58.93	a	49.81		25.26	a	5.75	a	43.80
2001	16.60		7.96		23.12	a	45.22		58.23		66.48		72.98		70.77	a	59.71	b	44.88	g	42.55	a	22.98		44.24	a
2002	21.15	a	26.42	b	18.72	a	43.28	a	51.67	a	69.27		75.00		68.48	a	61.54	c	39.79		31.08		24.05	b	44.20
2003	14.74		13.91		29.86	b	44.50	a	53.88	a	64.83	a	71.39		71.18	a	56.98		48.92		28.40		22.58		43.43
2004	11.82		16.48	a	35.61		46.02		54.37		62.31	a	67.79		63.15		63.18	b	48.32		36.40	a	22.85		44.03
2005	12.80	c	24.62		28.72	b	48.36	b	54.60		68.69	a	71.95	a	67.69		63.95	a	48.74		34.97		14.38	a	44.96
2006	27.03		18.55		30.19		48.10		56.87	a	66.37		72.48	a	68.48		54.50		44.26		32.07	a	24.19		45.26
2007	16.42		10.18		35.03	a	40.93		60.56		68.00		72.40	a	69.16		60.71	a	51.42		32.68		12.40		44.16
2008	8.47		10.53		25.68		39.53		53.03		64.72		70.66		68.21		59.78		46.62	a	32.08		9.79		40.76
2009	7.74		18.86		28.84		42.08		54.11	l	63.07		65.63		65.13		61.62		39.52		39.27		13.03		40.43	a
2010	7.81		11.73		34.50		50.98		55.23		65.90		70.87		72.11		57.58		50.02		31.98	a	12.47		43.43
2011	7.31		13.07		24.47		41.93		54.63		64.50		76.05		68.76		57.88		50.16		33.40		24.95	a	43.09
2012	20.35		23.47		44.58		48.90		60.06		69.40		77.39		67.53		58.18		41.52		31.30		17.26		46.66
2013	13.37		15.25		21.40		32.85		51.98		62.95		67.21		66.60		61.63		41.08		24.33		4.60		38.60
2014	4.19		3.82		19.48		36.15		53.37		65.47		66.52		67.87		59.70		47.84		22.78		21.39		39.05
2015	17.06		9.86		32.32		46.77		54.81		66.28		69.94		66.10		65.00		49.84		36.83		22.85		44.80
2016	13.56		23.36		36.18		45.43		56.68		69.47		69.84		69.18		61.95		48.48		39.57		15.00		45.72
2017	15.48		28.73		30.05		44.47		54.56		66.93		71.81		64.58		62.48		46.87		30.42		18.11		44.54
2018	10.40		10.18		28.10		32.37		62.40		69.45		70.40		67.58		61.45		41.63		25.43		22.05		41.79
2019	10.82		3.64		22.70	a	42.18		51.00		66.75		71.31		66.29		62.85		41.95		27.82		19.74		40.59
2020	14.32		16.48		33.19		40.67		52.95		70.22		71.68		69.97		58.92		39.11		34.77		23.40		43.81
2021	21.05		7.52		35.52		41.87		55.18		71.25		70.95		69.16		61.87		51.24		34.03		22.27		45.16
2022	10.18		13.18		28.24		36.98		56.11		67.95		72.39		68.63		60.95		46.68		30.20		12.05		41.96
2023	12.85		13.59		21.00		40.52		60.06		70.15		67.71		69.81		64.38		47.48		34.38		29.69		44.30
2024	13.71		30.71		33.60	a	45.42	k	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	26.01	i
Period of Record Statistics
MEAN	12.75		16.95		29.81		44.56		56.77		66.53		71.42		69.38		60.58		47.82		31.79		18.68		43.87
S.D.	6.50		6.83		5.76		4.40		3.57		3.20		3.14		2.76		3.09		4.08		4.67		5.42		1.85
SKEW	0.05		-0.05		0.03		-0.14		0.48		0.02		0.18		0.19		0.15		-0.02		-0.19		-0.31		-0.32
MAX	27.35		32.59		47.35		55.20		69.05		75.08		80.05		76.85		69.03		58.79		42.55		29.69		47.75
MIN	-1.45		-6.48		16.50		32.37		47.35		56.32		62.82		62.88		52.83		35.63		17.75		4.23		38.60
YRS	122		121		123		125		122		124		123		123		123		121		124		123		104