FLANDREAU, SD

Maximum of Maximum Temperature (Degrees Fahrenheit)

(392984)

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	39.00	a	39.00	a	65.00		79.00		89.00		96.00		100.00		97.00		99.00		73.00		73.00		47.00		100.00	b
1894	42.00	a	42.00	a	80.00		90.00		96.00		102.00		109.00	a	104.00		99.00		80.00		58.00		53.00		109.00	c
1895	33.00		64.00		78.00		89.00		92.00		89.00		96.00		99.00		104.00		75.00		71.00		39.00	b	104.00	b
1896	54.00	a	63.00	a	52.00		85.00		94.00		92.00		103.00		100.00		94.00		85.00	b	53.00		49.00		103.00	d
1897	41.00	a	42.00		53.00		88.00		90.00		93.00		98.00		90.00		95.00		94.00		78.00		44.00		98.00	a
1898	44.00		59.00		65.00		91.00		87.00		90.00		97.00		103.00		99.00		83.00		63.00		50.00	b	103.00	b
1899	49.00		56.00	b	56.00	a	88.00		88.00		94.00		96.00		100.00		95.00		83.00		64.00		56.00		100.00	c
1900	60.00		-----	z	70.00		82.00		93.00		92.00		95.00	a	96.00		90.00		83.00		69.00		44.00		-----	z
1901	45.00	g	49.00	c	66.00	c	90.00		89.00		93.00		102.00	a	100.00		92.00		82.00		65.00	a	44.00	a	102.00	p
1902	56.00		55.00		65.00		84.00		85.00		89.00		94.00		88.00		88.00		77.00		57.00		40.00	b	94.00	b
1903	42.00		41.00		62.00	a	75.00		79.00		82.00		90.00		89.00		86.00		80.00		71.00		42.00		90.00	a
1904	36.00	b	38.00	a	66.00		79.00		86.00	a	83.00		90.00	a	92.00		89.00		80.00		77.00	a	47.00		92.00	f
1905	37.00		51.00		78.00	a	78.00		81.00		93.00		95.00		96.00		89.00		86.00		64.00	a	48.00		96.00	b
1906	53.00		59.00		54.00		91.00		95.00	a	90.00		88.00		96.00		94.00		80.00		59.00	a	50.00		96.00	b
1907	37.00	d	53.00	a	75.00	a	68.00		90.00		90.00		93.00		96.00	a	86.00		80.00	a	59.00		46.00	c	96.00	k
1908	45.00	d	43.00		70.00	c	90.00		87.00		86.00		93.00		92.00		95.00		81.00		70.00		48.00		95.00	g
1909	42.00		44.00		57.00		78.00		95.00		86.00	a	92.00		92.00	c	83.00		85.00		79.00		44.00	g	95.00	k
1910	37.00	a	45.00		84.00		94.00	b	80.00		92.00	b	96.00	e	92.00		88.00	a	93.00	a	-----	z	53.00		-----	z
1911	51.00		46.00	a	74.00	b	78.00		93.00	b	101.00		101.00		91.00		96.00	b	69.00		48.00		48.00	b	101.00	i
1912	39.00		48.00	a	60.00		81.00	b	82.00	b	95.00		96.00	b	93.00	a	93.00		86.00	a	71.00		55.00		96.00	i
1913	53.00		64.00		64.00	a	87.00	a	90.00		94.00		93.00	c	95.00		98.00		-----	z	-----	z	-----	z	-----	z
1914	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1915	-----	z	-----	z	50.00	m	81.00		87.00		83.00		89.00		86.00		82.00		77.00		68.00	b	46.00		-----	z
1916	37.00		42.00	b	63.00		76.00		91.00		87.00		95.00		95.00		94.00		84.00		70.00		54.00		95.00	b
1917	45.00		40.00		66.00		73.00		87.00		92.00	a	100.00	a	92.00		83.00		71.00		72.00		51.00		100.00	b
1918	45.00		57.00		77.00	a	68.00		91.00		95.00		96.00	a	94.00	a	85.00		83.00		63.00	b	56.00		96.00	e
1919	52.00	c	38.00	d	69.00		70.00		94.00	b	90.00	a	93.00	b	94.00	a	90.00	d	80.00	a	52.00		43.00		94.00	r
1920	55.00		40.00		73.00		58.00		84.00		91.00		97.00		90.00		91.00		81.00		54.00	b	47.00		97.00	b
1921	52.00	d	61.00		80.00		79.00	a	90.00		97.00		97.00		95.00	a	89.00	a	81.00	e	62.00	a	58.00	a	97.00	n
1922	43.00	d	37.00		56.00	b	74.00	c	82.00	c	95.00	a	91.00	a	95.00	a	100.00		90.00		56.00	b	65.00	b	100.00	s
1923	59.00	a	50.00	c	63.00	c	85.00	b	83.00	b	90.00	g	-----	z	93.00	a	-----	z	83.00	e	71.00	c	-----	z	-----	z
1924	-----	z	-----	z	67.00		-----	z	95.00	a	86.00	a	88.00		91.00	e	77.00	i	89.00		75.00	a	52.00	a	-----	z
1925	40.00	a	52.00		73.00		84.00		96.00		90.00		100.00		96.00		103.00		66.00		60.00	b	50.00		103.00	c
1926	40.00		60.00	a	72.00		88.00		97.00		100.00		104.00		98.00		90.00	a	75.00		65.00	a	43.00		104.00	c
1927	45.00		49.00		66.00		85.00		83.00		98.00		90.00		98.00		96.00		85.00		54.00	a	34.00		98.00	a
1928	44.00		44.00		85.00		64.00	a	82.00		78.00		89.00		97.00	a	91.00	a	89.00		58.00		51.00	e	97.00	h
1929	43.00		38.00		63.00		85.00		84.00		93.00	a	95.00		98.00	a	92.00	a	80.00		55.00	b	49.00		98.00	e
1930	48.00		65.00		70.00		86.00		84.00		94.00	a	109.00		106.00		89.00		84.00	a	78.00		52.00		109.00	b
1931	-----	z	-----	z	-----	z	88.00		93.00		105.00		104.00		100.00		103.00		82.00		76.00		45.00		-----	z
1932	35.00		55.00		61.00		74.00		94.00		91.00		101.00		97.00		88.00		83.00	a	62.00		53.00		101.00	a
1933	49.00		52.00		63.00		79.00		91.00		104.00		101.00		93.00		93.00		82.00		70.00		52.00		104.00
1934	53.00		56.00		70.00		92.00		106.00		100.00	a	107.00		105.00		86.00		85.00		71.00		40.00		107.00	a
1935	48.00		52.00		70.00		72.00		73.00		86.00		103.00		96.00		95.00		76.00		64.00		43.00		103.00
1936	35.00		39.00		62.00	a	82.00		92.00		101.00		110.00		108.00		97.00		83.00		56.00		45.00		110.00	a
1937	32.00		43.00	a	61.00		75.00		86.00		103.00		98.00		106.00		96.00		86.00		71.00		50.00	a	106.00	b
1938	41.00		40.00		67.00	a	83.00		85.00		97.00		98.00		99.00		92.00		-----	z	70.00		50.00		-----	z
1939	45.00		38.00		81.00		88.00		95.00		94.00		104.00		91.00		100.00		84.00		72.00		65.00		104.00
1940	37.00		47.00		56.00		80.00		89.00		97.00		112.00		96.00		96.00		83.00		63.00		43.00		112.00
1941	40.00		37.00		61.00		77.00		95.00		94.00		102.00	a	100.00		93.00		77.00		65.00		61.00		102.00	a
1942	55.00		43.00		63.00		82.00		83.00		88.00	a	98.00		92.00		89.00		86.00		65.00		44.00		98.00	a
1943	40.00		58.00		87.00		80.00		94.00		95.00		95.00		93.00		87.00		83.00		58.00		51.00		95.00
1944	61.00		46.00		52.00		67.00		88.00		94.00		92.00		93.00		86.00		80.00		69.00		43.00		94.00
1945	45.00		50.00		71.00		78.00		83.00		90.00		96.00		93.00		93.00		87.00		68.00		41.00		96.00
1946	37.00		56.00		78.00	a	86.00		83.00		96.00		93.00		93.00		86.00	a	71.00		59.00		54.00	a	96.00	c
1947	59.00		46.00		71.00		78.00		79.00		87.00	a	100.00		101.00		93.00		90.00		52.00		41.00		101.00	a
1948	40.00		47.00		65.00		80.00		90.00		87.00		95.00		95.00		90.00		74.00		65.00		46.00		95.00
1949	48.00		45.00		56.00		81.00		92.00		93.00		97.00		95.00		85.00		77.00		74.00		50.00		97.00
1950	43.00		46.00		63.00		72.00		93.00		92.00		90.00		93.00		91.00		86.00		72.00		48.00		93.00
1951	44.00		49.00		42.00		79.00		81.00	g	86.00	a	92.00		93.00		86.00		86.00		58.00		51.00		93.00	h
1952	41.00		45.00		50.00		86.00		90.00		93.00		94.00		93.00		93.00		75.00		69.00		51.00	e	94.00	e
1953	42.00		42.00		62.00	a	79.00		90.00		97.00		94.00		92.00		94.00		90.00		73.00		39.00	a	97.00	b
1954	40.00		59.00		50.00		88.00		88.00		93.00		101.00		95.00		87.00		72.00		70.00		41.00		101.00
1955	40.00	a	43.00		65.00		80.00		89.00		89.00		104.00		102.00		97.00	a	83.00	a	63.00		40.00		104.00	c
1956	43.00		37.00		58.00		74.00		88.00		99.00		94.00		99.00		95.00		85.00		62.00		49.00		99.00
1957	35.00		49.00		62.00		80.00		85.00		88.00		104.00		95.00		90.00		79.00		57.00		57.00		104.00
1958	57.00		70.00		56.00		84.00		90.00		96.00		91.00		99.00		95.00		90.00		71.00		53.00		99.00
1959	47.00		39.00		69.00		85.00		96.00		100.00		96.00		95.00		95.00		74.00		60.00		49.00		100.00
1960	38.00		39.00		48.00		90.00		85.00	a	86.00		95.00		98.00		93.00		81.00		67.00		55.00		98.00	a
1961	41.00		46.00		67.00		80.00		87.00		96.00	c	92.00		95.00		91.00		85.00		61.00		56.00		96.00	c
1962	49.00		55.00		46.00		94.00		86.00	b	89.00		93.00		94.00		84.00		82.00		72.00	d	62.00		94.00	f
1963	55.00		58.00		79.00		84.00		88.00		99.00		94.00		93.00		90.00		91.00		62.00		53.00		99.00
1964	51.00		54.00		54.00		91.00	a	93.00	j	95.00		100.00		98.00		90.00		79.00		70.00		42.00		100.00	k
1965	41.00		48.00		47.00		85.00		87.00		87.00		97.00		102.00		84.00		75.00		72.00		50.00		102.00
1966	44.00		49.00		72.00		73.00		92.00		95.00		104.00		94.00		88.00		84.00		57.00		44.00	a	104.00	a
1967	46.00	a	51.00		80.00	a	80.00		99.00		85.00		100.00		93.00		85.00		85.00	a	66.00		51.00	a	100.00	d
1968	43.00		39.00		82.00		83.00	a	86.00		99.00		95.00		97.00		86.00		76.00		70.00		51.00	a	99.00	b
1969	37.00		39.00		46.00		73.00	b	93.00		89.00		95.00		94.00		88.00		80.00		66.00		54.00		95.00	b
1970	36.00		45.00		47.00		83.00		91.00		97.00		96.00		97.00		101.00		84.00		56.00		55.00	a	101.00	a
1971	39.00		47.00		65.00		80.00		84.00		98.00		91.00		103.00		96.00	a	78.00		66.00		35.00		103.00	a
1972	36.00		43.00		56.00		77.00		88.00	a	89.00		91.00		95.00		97.00		78.00		60.00		48.00		97.00	a
1973	44.00		48.00	a	64.00		75.00		86.00		95.00		93.00		105.00		87.00		78.00		64.00		50.00		105.00	a
1974	52.00		51.00		67.00		80.00		85.00		100.00		100.00		92.00		90.00		84.00		64.00		51.00		100.00
1975	40.00		38.00		60.00		62.00		90.00		90.00		96.00		92.00		90.00		83.00		73.00		42.00		96.00
1976	42.00		57.00		71.00		80.00		84.00		95.00		103.00		98.00		100.00		86.00		68.00		51.00	a	103.00	a
1977	36.00		60.00		68.00		-----	z	88.00		95.00		98.00		87.00	a	88.00		74.00		61.00		45.00		-----	z
1978	27.00		37.00		85.00		71.00		87.00		97.00		93.00		98.00		95.00	c	78.00		76.00	a	39.00		98.00	d
1979	25.00		37.00	a	44.00	a	75.00		88.00		99.00		90.00		88.00		88.00		77.00		65.00		57.00		99.00	b
1980	54.00		38.00	a	60.00		93.00		88.00		91.00		98.00		94.00		94.00		89.00		67.00		51.00		98.00	a
1981	64.00		65.00		68.00		88.00		85.00		97.00		95.00		92.00		90.00		70.00	a	65.00		40.00		97.00	a
1982	38.00	b	56.00		57.00		79.00		85.00		89.00		99.00		95.00		86.00		74.00		58.00		57.00		99.00	b
1983	42.00		46.00		64.00		72.00		85.00		92.00		99.00		97.00	a	95.00		81.00		60.00		26.00		99.00	a
1984	42.00	a	44.00		46.00		78.00		82.00		85.00		95.00		99.00		96.00		74.00		68.00		55.00	a	99.00	b
1985	43.00		53.00		67.00		91.00		89.00		94.00	a	96.00		90.00		85.00		74.00		63.00	b	38.00		96.00	c
1986	45.00		43.00		78.00		74.00		84.00		92.00		93.00		91.00		83.00		78.00		55.00		49.00	a	93.00	a
1987	58.00		61.00		76.00	a	88.00		92.00		95.00		96.00		96.00		87.00		85.00		62.00		45.00	a	96.00	b
1988	40.00	b	44.00		72.00	a	83.00		88.00		105.00		98.00		103.00		89.00		76.00		63.00		51.00	b	105.00	e
1989	55.00	a	51.00	c	75.00	a	83.00		85.00		96.00		102.00		89.00		87.00		84.00		60.00		48.00	c	102.00	h
1990	56.00		56.00		66.00		87.00		85.00		95.00		102.00		92.00		96.00		81.00		74.00		57.00		102.00
1991	41.00		59.00	b	75.00	a	86.00		87.00	a	92.00		99.00		98.00		91.00		84.00		54.00		44.00		99.00	d
1992	48.00		52.00	a	66.00		82.00		90.00		86.00		82.00		89.00		81.00		88.00		49.00		40.00		90.00	a
1993	39.00		40.00		50.00		68.00		78.00		85.00		88.00		90.00		88.00		85.00		54.00		42.00		90.00
1994	37.00	b	44.00		69.00		85.00		86.00		94.00		87.00	a	90.00		87.00		70.00		65.00	a	41.00		94.00	d
1995	35.00		47.00		70.00		63.00	a	76.00		95.00		100.00		92.00		83.00		82.00		50.00	b	52.00		100.00	c
1996	50.00	a	58.00		64.00		77.00		90.00		93.00		-----	z	89.00		84.00		81.00		63.00	a	32.00		-----	z
1997	39.00	e	41.00		67.00		75.00		85.00		97.00		92.00		90.00		89.00		91.00		55.00		47.00		97.00	e
1998	51.00		56.00		73.00		80.00		91.00		88.00		92.00		93.00		91.00		74.00	a	64.00	a	63.00		93.00	b
1999	38.00		56.00		72.00		70.00		83.00		88.00		97.00		92.00		85.00		81.00		78.00		52.00		97.00
2000	49.00		68.00		76.00	a	78.00		87.00		98.00		96.00		92.00		88.00		83.00		69.00	a	37.00		98.00	b
2001	42.00		38.00		44.00		86.00		93.00		95.00		90.00		93.00		87.00		88.00	g	74.00	a	47.00		95.00	h
2002	59.00	a	64.00	a	54.00		88.00		91.00		97.00		98.00		96.00		94.00	a	82.00		64.00		55.00		98.00	c
2003	55.00		50.00		74.00		86.00		81.00		90.00		91.00		96.00		92.00		86.00		61.00		44.00		96.00
2004	50.00		44.00		72.00		92.00		91.00		92.00		88.00		87.00		87.00		75.00		70.00		56.00		92.00
2005	49.00		62.00		70.00		78.00		81.00		92.00		97.00		90.00		90.00		85.00		72.00		42.00		97.00
2006	48.00		48.00		62.00		84.00		94.00		88.00		98.00		99.00		82.00		86.00		75.00		52.00		99.00
2007	40.00		46.00		72.00	a	84.00		89.00		88.00		99.00		93.00		87.00	a	87.00		61.00		35.00		99.00	b
2008	40.00		37.00		53.00		75.00		81.00		84.00		94.00		86.00		86.00		75.00		72.00		43.00		94.00
2009	35.00		54.00		70.00		89.00		83.00	l	90.00		83.00		89.00		83.00		66.00		67.00		51.00		90.00	l
2010	36.00		34.00		79.00		79.00		90.00		89.00		94.00		90.00		86.00		86.00		71.00	a	42.00		94.00	a
2011	36.00		45.00		55.00		72.00		87.00		97.00		95.00		93.00		90.00		85.00		62.00		54.00	a	97.00	a
2012	61.00		51.00		83.00		89.00		91.00		91.00		101.00		99.00		94.00		81.00		65.00		54.00		101.00
2013	39.00		38.00		60.00		79.00		91.00		86.00		87.00		91.00		89.00		77.00		50.00		41.00		91.00
2014	37.00		38.00		56.00		75.00		88.00		88.00		89.00		86.00		85.00		76.00		57.00		52.00		89.00
2015	44.00		49.00		75.00		79.00		84.00		95.00		93.00		87.00		87.00		88.00		69.00		48.00		95.00
2016	38.00		61.00		73.00		76.00		90.00		96.00		92.00		91.00		85.00		76.00		72.00		42.00		96.00
2017	41.00		63.00		69.00		79.00		84.00		92.00		98.00		84.00		90.00		76.00		63.00		50.00		98.00
2018	41.00		45.00		49.00		73.00		99.00		95.00		93.00		88.00		92.00		84.00		56.00		46.00		99.00
2019	39.00		42.00		61.00		82.00		80.00		93.00		93.00		85.00		86.00		81.00		52.00		39.00		93.00
2020	37.00		41.00		64.00		77.00		81.00		95.00		90.00		94.00		87.00		85.00		78.00		54.00		95.00
2021	44.00		46.00		80.00		87.00		91.00		99.00		99.00		89.00		91.00		82.00		66.00		53.00		99.00
2022	44.00		49.00		67.00		75.00		91.00		96.00		95.00		102.00		94.00		81.00		74.00		39.00		102.00
2023	35.00		39.00		41.00		88.00		87.00		91.00		98.00		100.00		99.00		91.00		65.00		59.00		100.00
2024	45.00		64.00		75.00	a	86.00	l	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	44.02		48.58		65.32		80.61		88.04		92.77		96.04		94.58		90.68		81.23		64.80		48.07		98.73
S.D.	7.52		8.44		10.27		7.11		5.05		5.02		5.25		4.76		5.01		5.58		7.22		6.83		4.45
SKEW	0.49		0.45		-0.26		-0.47		0.12		-0.04		0.33		0.38		0.42		-0.33		-0.18		-0.15		0.39
MAX	64.00		70.00		87.00		94.00		106.00		105.00		112.00		108.00		104.00		94.00		79.00		65.00		112.00
MIN	25.00		34.00		41.00		58.00		73.00		78.00		82.00		84.00		81.00		66.00		48.00		26.00		89.00
YRS	127		127		129		128		127		129		128		130		128		127		128		127		98