FLANDREAU, SD

Average of Minimum Temperature (Degrees Fahrenheit)

(392984)

File last updated on April 23, 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	-6.43	a	-2.48	a	12.13		28.13		38.87		54.53		55.90		52.39		44.93	a	31.50	a	14.37		2.81		27.22
1894	-4.07	a	2.67	a	22.71		35.27		43.52		55.30		59.03	a	56.35		46.33		35.48		18.33		16.48		32.28
1895	-5.39		-1.75		14.29		38.53		44.45		51.43		53.26		53.29		48.73		27.32		16.63		6.34	b	28.93
1896	5.86	b	11.48		10.68		35.47		48.58		52.67		54.94		54.94		43.10		30.70	a	7.57		13.23		30.77
1897	-2.50	a	2.14		11.94		31.67		40.65		50.10		58.39		52.19		54.23		36.81		15.40		5.16		29.68
1898	11.03		7.21		19.77		30.17		43.81		55.73		56.87		55.52		47.67		33.26		15.47		3.28	b	31.65
1899	3.97		-4.88	b	6.13	a	31.47		45.03		54.07		57.48		59.10		44.63		37.45		29.30		6.77		30.88
1900	8.35		-----	z	15.29		37.50		45.81		54.30		56.97		62.03		48.30		42.77		16.53		12.90		36.43	a
1901	7.33	a	2.41	a	20.37	a	36.07		43.13		53.93	a	61.97		56.93	a	46.27		36.23		19.00		5.77		32.45
1902	4.07	c	6.64		22.03	a	28.61	b	46.48		48.13		56.84		54.65		42.77		35.81		25.53		2.74		31.19
1903	5.84		3.00		22.90		33.10		44.19		50.47		56.74		55.45		45.13		36.03	a	18.52	a	2.07	b	31.12
1904	-1.06		-4.93		19.97	a	28.87		43.26		53.63		54.53	a	52.97		45.37		37.30	a	23.83		7.27	a	30.08
1905	-4.00		-2.89	a	26.55	b	30.57		41.03		54.14	b	55.65		59.42		51.72	a	33.87		25.03		13.48		32.05
1906	11.03		6.46		12.81		35.70		44.94		51.63		53.87		58.48		52.03		36.19		20.03	a	11.35		32.88
1907	-2.29	c	10.85	a	23.71		23.83		34.48		53.07		57.35		54.80	a	45.39	b	30.50	a	21.57		12.10		30.45
1908	6.19		6.50	a	19.45		33.97		42.52		52.57		57.94		54.32		51.90		36.00		23.33		11.19		32.99
1909	3.52		8.07		20.48		26.37		40.73	a	54.63		58.07	a	62.59	b	47.43		35.17	a	22.93		0.04	f	34.54	a
1910	5.50	a	-0.29		33.16		36.13		41.33	d	53.38	a	55.40	f	53.32		47.40		38.67	a	-----	z	9.84		31.84	b
1911	-1.40	a	9.39		23.39		31.52	a	47.20	a	58.80		55.60	a	53.94		48.69	a	35.74		12.97		12.45		32.36
1912	-9.03		6.00	c	11.16		35.23		45.03	a	50.27		57.87		55.90	b	44.10		35.30	a	23.63		11.32		30.57
1913	3.47	a	2.04		13.90		34.45	a	43.70	a	56.37		56.37	a	59.48		49.90	a	-----	z	-----	z	-----	z	35.52	c
1914	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1915	-----	z	-----	z	20.68	l	41.93		41.48		50.21	a	55.23		50.39		47.83		37.81		27.25	b	12.90	a	40.56	c
1916	-5.19		1.34		20.45		32.77		44.26		51.47		66.00		58.10		46.87		32.97		19.43		-1.16		30.61
1917	-1.32		-2.71		18.97		31.47		39.26		51.28	a	59.87	a	53.32		46.80		27.39		26.03		-2.19		29.01
1918	-5.66	b	5.33	a	25.83	a	29.13		46.32		55.57		57.57	a	58.03	a	40.93		38.16		27.25	b	17.48		33.00
1919	14.18	c	9.41	f	20.61		34.90		43.96	d	60.00	a	62.04	c	57.27	a	51.68	b	31.87	a	17.70		4.60	a	36.25	a
1920	3.65		10.11	a	20.10		27.10		45.42		56.30		58.81		53.35		51.47		41.94		23.96	b	13.39		33.80
1921	14.03	a	16.14		25.39		36.33		46.32		59.73		62.42		57.00	a	50.66	a	37.23		16.24	a	12.97		36.21
1922	4.03	a	-2.36		23.68		34.00	b	48.27	a	56.03	a	57.03		58.17	a	50.70		36.80	a	29.64	b	4.94		33.41
1923	10.10	a	0.59	a	12.10		30.43		43.71		57.16	e	-----	z	54.43	a	-----	z	37.92	g	30.24	e	-----	z	29.85	d
1924	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	53.67	a	53.40	f	43.14	i	43.48		22.50		-1.10		29.64	h
1925	-0.10		12.54		24.03		40.24	a	39.00		54.23		55.03		56.61		52.40		23.94		21.67		8.06		32.30
1926	2.42		15.61		16.35		27.43		48.26		49.53		58.32		57.26		47.17	a	34.87		17.43		4.27	a	31.58
1927	6.84		12.32		24.29		33.77		41.77	a	50.57		51.97		50.03	b	48.30		34.77		16.63		-5.77		30.46
1928	4.87		12.07	b	19.23		24.50		44.37	a	47.03		56.48		56.67	a	45.30		38.35		25.03		16.54	e	32.54
1929	-5.47	a	-0.77	b	24.65		33.20		38.26		50.67		58.16		56.48		45.79	a	37.29		19.29	f	10.77	a	31.73	a
1930	-4.93	a	22.04		21.26		36.60		44.74		52.60		62.23		60.13		48.07		38.16		25.80		16.35		35.25
1931	-----	z	-----	z	-----	z	35.13		41.52		60.33		60.19		56.97		54.10		39.77		25.67		18.84		43.61	c
1932	4.00		9.83		13.32		36.13		45.87		57.10		59.19		57.42		44.73		32.71		17.97		4.06		31.86
1933	12.61		1.61		21.71		31.30		43.94		59.33		60.39		54.87		53.63		32.81		19.57		7.45		33.27
1934	11.58		10.14		14.03		32.13		52.00		56.62	a	60.94		54.45		42.43		39.48		26.60		7.68		34.01
1935	2.71		19.11		24.00		32.57		41.58		51.37		64.87		56.06		45.26	c	29.33	a	14.50		7.71		32.42
1936	-11.13		-17.24		19.29		25.83		48.00		51.30		61.65		59.00		52.03		32.52		20.33		12.84		29.53
1937	-8.19		3.54	b	19.74		33.23		46.86	b	53.27		60.84		63.90		48.83	a	34.06		18.93		4.81		31.65
1938	1.39		8.68		24.94		35.37		44.61		55.53		61.06		61.03	a	52.00		42.68		21.00		13.19		35.12
1939	12.74		-3.29		19.32		30.93		50.06		56.03		61.13		57.13		49.62	a	35.42		23.50		17.84		34.20
1940	-4.87		10.00		18.84		32.43		42.35		55.27		61.81		58.06		53.87		42.58		18.00		15.58		33.66
1941	8.65		5.93		19.81		40.63		50.71		56.00		61.17	a	60.74		51.33		38.94		23.80		17.53	a	36.27
1942	9.87		12.07		25.48		37.30		43.84		55.59	a	58.48		58.48		45.73		35.39		21.47		6.48		34.18
1943	-2.87		11.46		13.55		32.47		40.94		57.63		60.48		60.06		44.97		35.23		23.30		11.26		32.37
1944	15.10		8.83		15.71		31.47		49.77		56.30		57.74		58.68		48.97		36.58		27.67		11.58		34.87
1945	8.81		12.04		26.10		30.23		39.26		51.00		58.29		58.84		47.50		35.29		21.17		3.26		32.65
1946	4.97		9.00		30.74		37.37		41.16		55.40		60.77		54.45		47.21	a	37.29		20.07		12.67	a	34.26
1947	12.57	a	4.39		19.32		32.20		39.52		52.86	a	58.77		64.52		49.80		44.87		18.87		7.68		33.78
1948	0.74		4.69		17.39		37.60		45.10		54.23		60.42		59.35		53.13		36.19		24.40		9.65		33.57
1949	2.26		2.61		21.16		32.03		48.23		55.90		61.65		59.55		43.90		37.81		28.23		8.58		33.49
1950	-6.26		8.04		14.94		26.57		41.39		53.73		55.26		54.06		48.63		39.55		17.67		6.10		29.97
1951	0.33	a	12.36		10.45		32.00		46.84		50.53		58.48		57.13		44.30		36.39		17.20		2.55		30.71
1952	0.77		13.72		16.03		35.63		44.39		57.63		59.97		56.77		48.50		29.81		22.00		15.77	e	33.42
1953	6.68		12.18		21.47	a	29.93		44.61		57.63		59.42		60.16		47.10		40.74		25.70		9.30	a	34.58
1954	-2.53	a	23.57		18.16		33.40		38.94		56.80		61.74		58.16		51.27		37.00		27.40		14.77		34.89
1955	7.74		2.11		17.00		39.50		48.29		54.27		65.35		62.00		49.20		36.94		13.07		1.71		33.10
1956	1.65		2.00		16.29		27.33		46.52		59.73		57.10		57.42		44.50		40.26		22.53		14.52		32.49
1957	-2.81		10.36		20.03	a	32.43		44.65		52.70		65.71		59.19		45.83		38.16		24.03		17.52		33.98
1958	12.71		4.21		23.06		32.67		45.55		51.50	f	56.19		57.39		49.40		36.84		20.67		4.00		31.15	a
1959	-0.10		1.36		23.74		30.30		46.10		57.60		57.26		61.94		46.90	a	30.97		12.50		19.45		32.33
1960	1.94		5.54	a	6.61		34.80		43.90	a	53.80		59.06		59.36	t	49.37		35.35		23.60		7.42		29.22	a
1961	0.42		10.29		25.94		27.79	b	41.55		53.54	f	56.97		58.71		46.77		35.52		21.87		5.45		30.11	a
1962	1.10		7.82		16.97		31.70		49.62	b	55.93		58.87		57.71		45.33		38.90		27.97		11.33	a	33.60
1963	-5.10		5.74	a	26.03		36.27		45.94		59.53		62.06		58.45		51.40		44.58		24.67		0.90		34.21
1964	9.94		13.24		14.55		35.59	a	48.48	j	55.17		62.35		54.32		47.47		34.45		21.03		3.26		31.94	a
1965	-2.03		-0.64		10.29		33.13		47.81		55.57		59.13		55.39		43.70		37.87		20.77		18.90		31.66
1966	-4.65		4.61		25.13		29.73		40.48		54.57		64.00		54.55		48.10		33.26		16.52	a	7.90		31.18
1967	6.10		-0.21		22.58		33.23		38.97		54.80		56.94		53.35		45.10		30.35		17.87		9.58		30.72
1968	1.65		4.86		22.39		33.57		38.53	a	54.83		58.10		56.65		45.97		35.84		23.37		7.23	a	31.91
1969	-3.68		8.11		5.40	a	34.82	b	46.77	a	47.97		60.10		58.10	a	47.30		32.13	a	21.50		9.13		30.64
1970	-11.06		2.29		15.58		32.57		44.81		56.80		59.55		57.13		46.23		34.23	a	21.40		2.60	a	30.18
1971	-4.29		4.54		18.87		33.00		40.84		59.27		55.29		54.45		46.28	a	38.10		20.67		5.13		31.01
1972	-6.13		-2.93		18.29		31.27		49.29		54.43		57.77		58.32		44.83		30.06		24.13		3.77		30.26
1973	7.23	a	9.78	a	30.29		33.17		42.13		54.93		58.67	a	59.84		46.97		38.94		23.70		3.48	b	34.09
1974	-5.50	a	6.89		19.77	a	34.13		43.40	a	52.17		62.58		53.50	a	39.38	a	33.70	a	22.87		10.39		31.11
1975	2.83	b	1.25		9.13		30.93		46.23		54.80		61.00		59.19		42.83	a	35.72	b	22.48	a	8.65		31.25
1976	-0.10		16.24		19.90	b	37.17	a	40.68		55.63		59.50	a	57.29		44.14	a	26.87		13.40		-0.42		30.86
1977	-10.72	b	10.00		23.07	a	-----	z	52.77	a	54.10	a	60.26		52.63	a	48.14	a	33.35		19.14	a	4.67	a	31.58	a
1978	-11.97		-5.26	a	16.63	d	35.70		46.65		54.07		58.60	a	57.14	b	52.22	c	32.53	a	17.41	a	1.83	a	29.63
1979	-12.16		-8.67	a	16.00		30.61	b	40.10		54.33		60.16		56.06		48.13		32.77		20.20		13.52	b	29.25
1980	5.32		4.83		17.13		33.83		44.50	a	56.00	a	59.50	a	57.81		46.33		31.63	a	23.43		9.67	a	32.50
1981	5.53	a	11.61		22.48		38.27		42.16		53.70		60.65		57.90		45.15	d	35.42		25.17		6.45		33.71
1982	-13.11	l	3.78	j	23.00	g	29.76	i	48.93	d	48.96	d	61.44	d	58.46	g	47.95	h	36.50	g	18.86	i	15.12	f	53.11	i
1983	6.17	h	16.35	k	23.72	f	30.54	b	40.80	f	54.12	d	63.84	f	62.96	f	45.61	g	35.71	j	26.31	d	-11.80	f	36.99	i
1984	4.14	i	20.20	i	13.08	g	35.37	c	42.00	h	57.92	d	58.52	f	58.96	g	40.39	g	38.00	k	20.00	l	4.48	j	46.65	j
1985	-7.42	l	4.38	l	25.58	g	35.00	h	46.22	h	48.52	g	55.52	f	51.30	k	46.05	i	31.09	i	10.08	d	-4.80	f	10.08	k
1986	6.22	h	2.86	f	22.00	j	34.83	f	45.30	h	55.57	g	59.50	g	49.70	k	46.92	f	35.04	f	16.14	a	12.52		14.33	j
1987	8.83	a	19.36		25.19		35.34	a	48.87	a	56.31	a	61.58		54.40	a	46.79	b	28.13		25.37		15.39		35.46
1988	-8.39	c	-1.61	a	21.32	c	28.79	b	49.52		59.60		58.83	b	56.28	b	44.31	a	28.03	b	21.64	b	8.86	b	30.60
1989	10.00	c	-6.77	b	15.20	a	30.28	a	41.48		50.93	a	61.17	b	55.26		45.68	b	29.14	c	17.50		-1.06		29.07
1990	13.45	b	7.04	b	22.33	a	29.52	a	41.39		55.70		56.81		56.81		49.46	b	31.06		22.93		3.35		32.49
1991	-1.87	a	15.92	b	21.63	a	36.00		50.58		62.60		60.13	a	58.48		47.97	a	30.97	a	14.31	a	12.55		34.11
1992	13.97		19.45		24.03		30.20		45.42		53.00		54.42		52.73	a	44.71	b	32.74		23.50		6.84		33.42
1993	-0.32		1.96		14.65		31.90		44.77		53.23		60.55		59.00	d	43.33		32.38	b	18.17	a	10.55		30.85
1994	-6.39		-3.71		24.29		32.14	a	47.97	a	58.67		57.10	a	54.97	b	50.50		38.42		24.41	a	12.40	a	32.56
1995	6.32		10.04	a	21.20	a	30.07	a	43.55		57.57		60.29		62.00		44.86	a	35.29		17.03	a	12.39		33.38
1996	-2.55	b	7.76		11.94		27.76	a	43.80	a	57.00		-----	z	57.70	d	48.21	a	34.10	a	13.93		1.48		27.38	a
1997	-5.17	b	6.44	a	17.67	a	29.13		40.19		56.66	a	61.16		56.94		47.48	a	35.43	a	18.53		17.65		31.84
1998	9.00		22.64		18.45		34.28	a	49.68		53.67		60.71		59.48		50.83		38.58		26.00		13.07	a	36.37
1999	1.00		17.68		21.68		35.73		46.33	a	55.60		62.37	a	57.10	a	45.27		31.97		26.10	a	11.74		34.38
2000	3.63	a	15.93		24.27	a	30.63		46.55		54.11	c	60.13		58.34	b	45.03	a	38.29		16.40		-3.73	a	32.47
2001	6.97		-3.61		13.80	a	34.77		47.94		56.23		63.00		58.83	a	48.46	b	31.25	g	30.20		14.74		33.76	a
2002	11.19		14.11	a	8.83	a	31.69	a	38.97	a	58.57		63.39		58.40	a	48.93	b	30.35		20.60		13.38	b	33.20
2003	4.19		1.61		16.69	b	32.00	a	42.97	a	54.17	a	59.52		58.67	a	43.50		34.58		19.10		14.19		31.77
2004	0.77		7.89	a	25.71		30.33		43.03		51.59	a	57.90		51.74		51.89	b	36.97		25.48	a	12.71		33.00
2005	4.18	c	12.82		17.31	b	36.04	b	43.71		59.31	a	61.63	a	56.00		51.48	a	36.13		24.37		6.27	a	34.10
2006	20.52		8.18		21.00		36.83		45.53	a	54.70		59.40	a	57.68		44.23		31.87		19.03	a	14.61		34.47
2007	8.00		1.14		24.42		29.93		48.94		58.03		60.77	a	59.52		48.38	a	40.10		21.90		3.13		33.69
2008	-2.26		0.45		15.81		28.17		42.10		53.97		59.65		56.52		46.30		34.80	a	21.90		-0.42		29.75
2009	-3.55		7.57		17.48		30.10		41.11	l	52.77		55.26		54.00		49.50		32.13		27.73		4.81		29.80	a
2010	-1.00		1.96		26.06		38.37		44.06		56.23		60.97		62.10		47.10		36.52		21.90		3.81		33.17
2011	-1.87		2.96		15.81		33.37		44.19		55.17		65.94		57.42		44.53		36.71		20.83		15.10		32.51
2012	9.32		12.14		32.06		36.47		48.58		57.90		65.55		53.97		41.20		28.81		20.30		7.58		34.49
2013	3.52		5.50		12.39		23.13		41.06		53.33		56.61		55.16		48.63		30.68		13.00		-5.35		28.14
2014	-7.74		-7.61		9.52		23.90		41.90		55.47		56.55		57.81		47.97		34.52		12.53		14.55		28.28
2015	8.65		-0.79		18.19		32.87		43.65		55.90		58.61		55.71		53.40		37.68		27.17		15.68		33.89
2016	5.48		16.10		26.03		34.40		44.61		56.80		58.39		58.65		50.90		36.45		28.70		6.00		35.21
2017	8.29		18.18		21.29		33.53		43.42		54.80		59.35		54.35		50.60		34.55		20.27		8.77		33.95
2018	0.58		-1.32		20.74		23.13		49.81		59.83		59.94		56.94		51.63		31.13		16.80		13.71		31.91
2019	0.61		-5.21		13.47	a	32.20		41.87		55.87		61.94		56.65		53.13		32.65		19.30		12.26		31.23
2020	6.19		6.24		24.06		28.10		43.55		59.30		60.84		57.81		46.27		27.68		23.10		13.00		33.01
2021	13.81		-1.29		24.32		30.30		43.84		57.13		59.55		57.35		48.13		40.06		23.70		13.06		34.17
2022	-2.61		0.25		17.39		26.10		45.10		56.87		61.29		57.39		45.63		32.00		19.53		3.84		30.23
2023	5.00		2.11		12.55		29.50		46.74		58.53		55.45		57.29		50.83		36.16		21.27		20.23		32.97
2024	7.00		21.03		20.77	a	33.61	g	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	16.27	i
Period of Record Statistics
MEAN	2.34		6.08		19.25		32.45		44.38		54.91		59.24		57.00		47.67		35.09		21.16		8.89		32.34
S.D.	6.80		7.33		5.40		3.70		3.34		2.90		2.79		2.67		3.09		3.89		4.49		5.70		1.88
SKEW	0.02		0.02		-0.19		-0.20		0.03		-0.19		0.08		0.06		0.09		-0.08		-0.31		-0.26		-0.24
MAX	20.52		23.57		33.16		41.93		52.77		62.60		66.00		64.52		54.23		44.87		30.24		20.23		36.37
MIN	-12.16		-17.24		5.40		23.13		34.48		47.03		51.97		50.03		39.38		23.94		7.57		-5.77		27.22
YRS	123		121		123		125		123		125		123		123		123		122		125		123		107