FLANDREAU, SD

Average of Maximum Temperature (Degrees Fahrenheit)

(392984)

File last updated on April 26, 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	20.13	a	24.93	a	36.90		51.63		68.94		83.97		86.03		83.00		78.17		58.68		42.43		23.06		54.82
1894	17.80	a	24.74	a	46.58		61.13		76.06		90.00		94.67	a	87.81		79.50		61.35		38.63		36.42		59.56
1895	16.87		23.36		44.97		71.87		71.06		78.03		86.23		85.23		79.93		58.10		39.93		28.62	b	57.02
1896	28.37	a	36.07	a	35.45		60.60		75.19		78.60		82.39		84.68		71.53		59.00	b	27.93		33.55		56.11
1897	20.03	a	26.79		32.71		58.40		73.81		76.00		83.45		75.42		83.83		65.16		43.50		24.84		55.33
1898	32.94		33.96		45.52		62.73		69.35		78.33		84.58		84.71		78.80		56.03		40.73		23.38	b	57.59
1899	28.77		19.77	b	28.63	a	60.60		70.03		79.00		85.16		85.42		75.23		65.19		53.57		30.58		56.83
1900	35.19		-----	z	41.29		64.23		76.45		80.87		80.33	a	85.65		71.70		68.87		36.67		30.71		61.09	a
1901	26.79	g	25.88	c	41.46	c	61.00		71.39		76.67		91.53	a	85.55		69.90		64.90		42.86	a	24.97	a	59.65	a
1902	28.90		26.18		47.00		59.00		71.03		73.47		81.55		76.81		68.27		63.65		41.53		21.55	b	54.91
1903	25.48		23.04		40.10	a	58.17		68.55		72.23		77.97		74.77		68.97		63.81		39.43		26.81		53.28
1904	18.41	b	18.21	a	40.61		54.47		70.33	a	72.37		77.47	a	78.10		70.77		61.23		53.00	a	28.06		53.59
1905	15.94		21.89		46.90	a	57.13		65.55		75.67		76.58		82.16		75.63		56.00		45.62	a	34.29		54.45
1906	31.58		31.82		29.19		61.87		69.43	a	73.33		79.10		80.13		73.77		58.87		38.28	a	29.10		54.71
1907	17.96	d	28.52	a	44.80	a	48.93		60.23		73.57		78.45		81.17	a	69.60		61.60	a	44.10		35.50	c	53.70
1908	31.07	d	26.17		39.93	c	60.97		67.19		71.70		79.03		76.58		80.50		57.19		46.83		29.77		55.58
1909	22.26		26.39		36.42		49.87		69.32		74.38	a	78.03		85.50	c	71.93		58.26		45.20		14.79	g	56.14	a
1910	22.90	a	22.00		61.55		66.18	b	66.32		80.00	b	87.23	e	81.71		74.03	a	69.70	a	-----	z	30.71		60.21	a
1911	23.97		31.22	a	53.90	b	56.90		77.69	b	88.53		85.77		78.39		72.89	b	53.58		34.73		31.76	b	57.44
1912	10.74		28.50	a	34.29		62.50	b	69.24	b	76.27		83.41	b	80.33	a	70.10		65.27	a	51.20		37.94		55.82
1913	30.48		29.18		41.80	a	60.72	a	66.16		81.50		83.14	c	85.90		75.33		-----	z	-----	z	-----	z	61.58	c
1914	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1915	-----	z	-----	z	39.11	m	66.50		61.97		73.47		76.19		75.90		69.13		63.16		45.50	b	29.90		62.41	c
1916	15.32		20.67	b	39.16		53.47		68.39		72.50		88.19		83.03		72.83		57.84		44.77		21.68		53.15
1917	20.45		18.71		35.77		50.30		65.42		74.69	a	85.03	a	81.32		71.33		50.68		52.13		18.52		52.03
1918	15.00		31.04		52.73	a	54.70		74.42		79.63		83.27	a	83.60	a	69.73		63.06		44.71	b	33.35		57.10
1919	32.71	c	23.46	d	40.32		53.53		68.00	b	76.90	a	84.62	b	83.97	a	75.42	d	52.63	a	35.13		21.45		54.01
1920	22.55		27.90		43.16		46.90		68.19		76.33		81.65		81.10		75.20		66.55		38.00	b	28.45		54.66
1921	30.81	d	38.71		47.48		61.48	a	69.23		85.13		87.10		81.20	a	75.17	a	66.38	e	36.24	a	32.63	a	59.30
1922	25.19	d	21.79		41.41	b	59.48	c	71.96	c	83.21	a	80.80	a	86.73	a	80.40		66.16		44.29	b	35.72	b	58.10
1923	32.20	a	33.36	c	40.14	c	61.36	b	71.52	b	81.00	g	-----	z	79.70	a	-----	z	60.85	e	49.89	c	-----	z	53.63	d
1924	-----	z	-----	z	40.61		-----	z	64.83	a	72.97	a	80.13		82.46	e	68.43	i	74.10		51.48	a	22.90	a	61.19	d
1925	21.73	a	31.29		50.45		68.13		71.90		77.50		84.42		87.32		79.83		47.32		44.61	b	28.42		57.74
1926	27.90		35.48	a	42.39		61.80		78.52		78.53		86.19		82.97		69.07	a	61.13		36.48	a	25.71		57.18
1927	27.48		33.50		43.55		56.07		64.26		75.70		81.03		82.00		75.03		67.61		36.45	a	14.23		54.74
1928	23.35		29.76		42.26		46.41	a	68.52		65.60		75.61		82.40	a	76.69	a	61.55		43.53		36.12	e	54.32
1929	14.42		21.39		45.87		59.03		69.35		79.59	a	86.48		86.90	a	68.28	a	62.13		38.86	b	28.10		55.03
1930	16.42		41.54		46.00		63.33		69.65		78.69	a	93.03		88.52		76.87		58.63	a	48.13		34.74		59.63
1931	-----	z	-----	z	-----	z	63.27		70.65		86.73		90.03		85.52		81.80		63.23		46.63		32.71		68.95	c
1932	21.97		29.93		31.74		57.93		72.58		80.73		87.39		82.65		73.93		56.40	a	39.13		25.03		54.95
1933	35.74		25.36		41.35		57.47		66.61		90.83		85.65		81.61		77.80		61.06		46.33		29.48		58.28
1934	30.26		33.25		44.32		60.20		86.10		84.48	a	88.29		83.26		67.97		65.52		46.67		25.23		59.63
1935	22.19		36.29		45.94		51.03		61.94		74.00		91.13		83.61		77.57		59.39		36.37		25.81		55.44
1936	10.32		4.28		41.20	a	53.57		75.58		80.67		98.45		89.00		79.00		59.61		40.03		29.32		55.09
1937	11.03		23.85	a	37.23		51.33		71.90		75.57		88.61		89.81		76.63		57.42		41.27		25.00	a	54.14
1938	21.23		26.29		47.47	a	59.67		66.84		79.90		86.06		88.55		74.93		-----	z	41.57		33.00		56.86	a
1939	30.32		19.96		43.48		59.10		79.45		80.50		87.29		83.23		81.87		61.32		51.53		40.97		59.92
1940	15.32		27.90		32.74		54.73		71.32		80.77		90.74		78.84		79.33		69.97		35.77		31.03		55.71
1941	25.84		25.89		36.90		58.90		76.35		79.30		87.00	a	87.13		76.70		61.52		45.97		36.35		58.15
1942	31.03		30.50		43.68		67.53		64.26		76.14	a	83.45		82.23		66.93		62.81		46.10		25.61		56.69
1943	17.19		35.11		38.74		61.83		67.42		78.33		85.77		82.16		70.43		63.94		39.57		36.94		56.45
1944	39.61		31.90		33.00		50.93		73.97		78.90		81.87		79.16		72.07		64.77		41.63		29.23		56.42
1945	25.52		32.36		51.32		55.57		64.68		70.07		82.03		82.03		70.83		64.84		41.00		19.10		54.94
1946	26.03		31.46		52.20	a	66.37		67.39		79.37		82.58		80.03		69.66	a	57.32		39.87		32.53	a	57.07
1947	33.35		24.04		37.35		50.87		65.81		73.59	a	83.42		88.94		74.93		67.81		34.37		27.16		55.14
1948	21.42		25.69		37.35		63.17		68.23		75.03		82.84		81.03		78.47		62.06		41.17		28.23		55.39
1949	20.61		26.14		38.19		60.73		73.97		81.13		85.90		85.16		70.83		61.94		51.73		31.32		57.31
1950	16.52		30.64		34.97		46.67		64.39		79.57		79.74		78.81		73.47		64.39		40.07		25.10		52.86
1951	22.10		32.46		28.29		49.77		69.17	g	73.31	a	81.03		78.84		66.73		57.45		37.37		22.45		49.98	a
1952	22.26		31.55		31.48		59.43		69.45		82.07		85.35		82.35		77.53		60.13		45.83		32.00	e	56.62
1953	26.68		29.36		41.20	a	50.53		68.16		80.47		83.81		83.52		74.67		68.68		48.13		29.27	a	57.04
1954	19.81		41.61		35.06		61.67		65.68		79.13		88.29		82.45		71.63		55.52		50.97		31.10		56.91
1955	27.23	a	24.18		40.06		69.00		77.35		76.00		89.90		89.87		76.07	a	65.83	a	34.70		20.35		57.55
1956	21.10		24.10		37.39		53.50		71.74		86.23		82.00		83.39		77.10		72.68		42.50		34.84		57.21
1957	20.74		32.82		41.03		58.37		67.03		77.43		89.19		82.03		70.80		57.48		41.67		38.32		56.41
1958	33.81		29.43		39.52		59.60		77.00		75.27		82.06		88.94		78.13		66.84		47.40		28.48		58.87
1959	21.90		25.79		45.81		62.00		69.90		84.53		87.55		87.42		73.90		55.13		33.70		36.39		57.00
1960	22.45		23.90		28.48		57.60		70.30	a	75.90		86.52		84.19		73.67		63.29		47.43		29.87		55.30
1961	24.87		32.54		44.65		53.57		66.19		80.74	c	84.16		86.61		72.13		65.42		41.83		25.42		56.51
1962	23.87		25.75		31.48		57.73		72.17	b	76.93		80.97		84.29		71.87		64.68		47.81	d	33.48		55.92
1963	15.94		31.50		49.42		62.53		70.42		84.03		85.10		82.68		75.90		72.00		49.83		22.55		58.49
1964	33.74		38.07		36.81		59.69	a	74.67	j	83.43		89.74		79.84		72.17		63.03		44.63		24.16		56.85	a
1965	21.48		25.75		28.52		56.57		72.32		78.73		84.32		83.42		61.97		65.45		44.57		36.00		54.92
1966	16.71		27.07		49.19		52.00		69.97		81.30		90.90		81.35		72.00		60.77		41.17		28.43	a	55.91
1967	29.80	a	23.00		44.87	a	55.57		64.74		74.80		81.87		81.23		72.63		60.63	a	43.57		30.40	a	55.26
1968	22.65		25.17		51.06		57.59	a	64.55		79.30		80.97		81.61		70.27		59.26		41.30		23.80	a	54.79
1969	16.26		24.86		28.06		55.46	b	70.06		71.07		82.19		83.48		73.60		53.52		42.70		29.42		52.56
1970	13.65		29.32		33.42		53.60		70.29		79.67		85.00		83.06		73.30		56.71		37.87		26.43	a	53.53
1971	17.87		25.93		37.29		60.20		67.39		80.87		78.87		84.42		72.90	a	62.03		42.00		24.52		54.52
1972	17.81		21.24		37.13		50.27		67.83	a	77.00		78.97		79.52		69.87		55.71		37.47		22.23		51.25
1973	25.32		29.81	a	45.13		54.73		66.71		80.20		82.48		85.61		69.60		64.55		41.80		24.03		55.83
1974	20.61		28.43		41.52		57.27		64.65		77.23		88.81		78.23		71.10		63.00		42.93		32.19		55.50
1975	26.29		22.61		31.71		45.23		72.16		75.97		88.03		81.68		68.83		63.61		44.90		26.13		53.93
1976	22.29		36.66		40.32		62.00		68.90		83.40		88.52		87.68		76.27		56.10		38.63		26.87	a	57.30
1977	12.77		34.79		42.55		-----	z	78.13		81.20		85.55		76.73	a	72.03		58.10		38.93		22.23		54.82	a
1978	10.03		18.21		37.81		52.60		69.42		77.97		80.97		82.87		78.93	c	60.23		40.10	a	23.77		52.74
1979	9.26		15.78	a	33.27	a	50.07		64.13		77.33		82.94		77.45		75.23		59.03		39.90		35.35		51.64
1980	26.48		24.64	a	36.45		61.20		72.42		80.10		85.39		81.06		74.80		57.87		47.60		30.52		56.54
1981	31.45		35.43		50.16		63.83		68.35		79.50		82.84		79.29		74.33		56.47	a	47.93		24.61		57.85
1982	12.66	b	23.93		36.68		53.43		68.52		73.50		83.65		80.81		70.17		57.84		36.77		32.00		52.49
1983	26.19		30.64		36.90		49.63		65.55		74.90		87.10		88.87	a	73.33		58.87		38.40		9.26		53.30
1984	24.00	a	33.86		30.39		53.17		65.23		76.90		82.13		84.35		68.33		57.68		44.57		27.70	a	54.03
1985	19.77		24.82		44.97		61.60		73.32		74.66	a	82.58		75.97		66.87		57.26		30.11	b	19.03		52.58
1986	28.84		22.43		42.45		56.43		68.03		80.20		84.16		77.23		68.87		58.87		37.47		36.47	a	55.12
1987	33.26		43.89		43.20	a	65.60		74.71		82.27		85.35		78.19		72.90		57.45		50.73		31.27	a	59.90
1988	19.79	b	23.10		45.30	a	58.77		76.35		87.30		86.55		84.68		74.40		57.42		43.43		32.97	b	57.51
1989	34.03	a	20.84	c	34.87	a	58.73		71.03		79.03		85.26		82.06		72.80		65.26		38.93		21.57	c	55.37
1990	36.81		35.93		45.65		60.10		66.06		79.33		80.26		79.61		77.03		59.23		44.50		24.39		57.41
1991	20.68		38.23	b	46.13	a	59.50		68.47	a	80.30		80.74		81.55		70.20		58.13		32.37		31.97		55.69
1992	33.45		34.14	a	44.71		49.30		72.26		74.30		71.23		72.48		69.63		58.87		34.03		24.71		53.26
1993	20.29		20.00		33.68		51.20		64.90		71.10		77.03		78.19		65.30		57.45		36.97		25.81		50.16
1994	12.07	b	18.04		42.35		55.43		71.77		76.83		77.97	a	76.87		72.33		59.87		43.69	a	27.94		52.93
1995	21.71		29.11		39.23		46.86	a	62.23		76.50		81.81		81.58		68.50		55.26		33.29	b	28.16		52.02
1996	17.30	a	27.00		33.55		51.83		61.16		77.00		-----	z	78.87		67.40		59.97		28.48	a	16.39		47.18	a
1997	11.46	e	25.68		35.13		50.83		62.71		79.47		80.10		78.71		74.80		61.71		34.60		32.06		52.27
1998	24.65		38.21		33.65		57.20		73.74		73.23		81.32		80.48		79.27		60.37	a	41.97	a	34.65		56.56
1999	19.68		36.71		42.87		55.13		68.71		74.90		84.26		80.03		71.57		60.39		55.10		35.19		57.05
2000	27.97		38.17		50.70	a	55.33		69.94		74.83		80.90		80.87		73.00		61.32		33.69	a	15.06		55.15
2001	26.23		19.54		32.61		55.67		68.52		76.73		82.97		82.58		71.03		58.50	g	54.90	a	31.23		54.73	a
2002	30.90	a	39.52	a	28.77		55.03		64.58		79.97		86.61		78.32		74.45	a	49.23		41.57		33.81		55.23
2003	25.29		26.21		41.29		57.90		65.16		75.13		83.26		83.68		70.47		63.26		37.70		30.97		55.03
2004	22.87		25.66		45.52		61.70		65.71		72.73		77.68		74.55		75.07		59.68		46.83		33.00		55.08
2005	21.58		36.43		41.13		61.60		65.48		78.50		82.10		79.39		76.80		61.35		45.57		22.84		56.06
2006	33.55		28.93		39.39		59.37		68.61		78.03		85.52		79.29		64.77		56.65		44.87		33.77		56.06
2007	24.84		19.21		44.93	a	51.93		72.19		77.97		84.00		78.81		73.03	a	62.74		43.47		21.68		54.57
2008	19.19		20.62		35.55		50.90		63.97		75.47		81.68		79.90		73.27		58.81		42.27		20.00		51.80
2009	19.03		30.14		40.19		54.07		67.11	l	73.37		76.00		76.26		73.73		46.90		50.80		21.26		51.07	a
2010	16.61		21.50		42.94		63.60		66.39		75.57		80.77		82.13		68.07		63.52		41.79	a	21.13		53.67
2011	16.48		23.18		33.13		50.50		65.06		73.83		86.16		80.10		71.23		63.61		45.97		34.77	a	53.67
2012	31.39		34.79		57.10		61.33		71.55		80.90		89.23		81.10		75.17		54.23		42.30		26.94		58.83
2013	23.23		25.00		30.42		42.57		62.90		72.57		77.81		78.03		74.63		51.48		35.67		14.55		49.07
2014	16.13		15.25		29.45		48.40		64.84		75.47		76.48		77.94		71.43		61.16		33.03		28.23		49.82
2015	25.48		20.50		46.45		60.67		65.97		76.67		81.26		76.48		76.60		62.00		46.50		30.03		55.72
2016	21.65		30.62		46.32		56.47		68.74		82.13		81.29		79.71		73.00		60.52		50.43		24.00		56.24
2017	22.68		39.29		38.81		55.40		65.71		79.07		84.26		74.81		74.37		59.19		40.57		27.45		55.13
2018	20.23		21.68		35.45		41.60		75.00		79.07		80.87		78.23		71.27		52.13		34.07		30.39		51.66
2019	21.03		12.50		32.10		52.17		60.13		77.63		80.68		75.94		72.57		51.26		36.33		27.23		49.96
2020	22.45		26.72		42.32		53.23		62.35		81.13		82.52		82.13		71.57		50.55		46.43		33.81		54.60
2021	28.29		16.32		46.71		53.43		66.52		85.37		82.35		80.97		75.60		62.42		44.37		31.48		56.15
2022	22.97		26.11		39.10		47.87		67.13		79.03		83.48		79.87		76.27		61.35		40.87		20.26		53.69
2023	20.71		25.07		29.45		51.53		73.39		81.77		79.97		82.32		77.93		58.81		47.50		39.16		55.63
2024	20.42		40.38		45.87		57.00	e	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	40.92	h
Period of Record Statistics
MEAN	23.12		27.71		40.29		56.74		69.14		78.11		83.65		81.77		73.36		60.53		42.21		28.21		55.35
S.D.	6.49		6.65		6.57		5.64		4.41		4.13		4.17		3.64		3.86		4.87		5.59		5.77		2.23
SKEW	0.13		-0.08		0.23		-0.11		0.62		0.38		0.30		0.11		0.06		-0.10		-0.01		-0.42		-0.32
MAX	39.61		43.89		61.55		71.87		86.10		90.83		98.45		89.87		83.83		74.10		55.10		40.97		59.92
MIN	9.26		4.28		28.06		41.60		60.13		65.60		71.23		72.48		61.97		46.90		27.93		9.26		49.07
YRS	127		127		129		129		127		129		128		130		128		127		128		127		114