ROCK RAPIDS, IA

Average of Average Temperature (Degrees Fahrenheit)

(137147)

File last updated on April 25, 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	-----	z	-----	z	-----	z	38.50	w	56.16		70.72		74.85	a	68.21		61.82		47.53		31.62		17.55	b	53.56	d
1894	10.40	b	14.71	b	36.95	a	50.48	d	60.05	a	72.68		77.16		72.74		64.83		52.72	b	31.87	c	27.52		47.68
1895	7.46	c	13.36		28.16		54.87		58.24	b	65.48		71.18		70.11		65.62	b	47.74		28.96	c	18.70	a	44.16
1896	23.32	c	22.95		25.30	a	45.02	j	58.47		66.94	d	71.35		70.55	a	54.42		41.24		18.04	b	27.15		43.61	a
1897	12.50	d	18.61		24.84		45.64	a	56.12	a	66.43		72.61		65.73		68.68	b	53.13	a	21.19	i	14.42		45.34	a
1898	22.35		-----	z	34.17	b	46.70	b	55.03		-----	z	69.73	a	-----	z	-----	z	42.84		-----	z	11.84	b	40.38	e
1899	12.28	b	0.41	e	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	6.34	j
1900	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1901	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1902	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1903	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1904	13.26	f	12.19	b	33.07	d	43.28		60.21		66.72	a	69.37		67.53		60.10		50.98		41.48	a	22.12	b	47.92	a
1905	10.80	d	12.65	b	40.92	a	43.18		55.40		67.65		70.11		74.55		67.73		43.34	b	39.50	b	26.83	d	46.06
1906	22.38	b	22.50	b	25.69	d	49.92		-----	z	65.77		70.65		72.03		63.63		43.06		33.33		21.23	e	44.56	a
1907	7.04	f	20.38		36.70	a	36.77		50.42		64.03		71.19		70.42		60.37		46.32		34.42		24.62	b	46.88	a
1908	20.84		18.42	c	33.56		47.68		55.24		66.18		74.02		69.61		68.98		-----	z	-----	z	-----	z	50.51	c
1909	14.32	a	21.12	c	29.18		37.02		56.10		68.42		73.85		77.27		63.33		48.65		37.75		10.94	f	47.91	a
1910	15.65	a	12.64		45.68		52.40	a	-----	z	77.28	j	75.15		71.83	a	60.13		51.48	a	31.05		22.40	a	43.84	b
1911	14.85	a	22.07		37.31		46.92		64.11		75.92		72.45	a	68.74		63.55		45.16		26.77		22.69		46.71
1912	1.03	a	19.85	e	24.97		48.41	a	60.45		64.48		72.65		67.92		57.58		46.43	a	34.71	a	21.60		43.34
1913	-----	z	14.12		26.35		45.38		54.68		-----	z	-----	z	74.45	c	64.02	a	42.98		37.43	b	26.16	b	42.84	c
1914	23.03		9.19	a	-----	z	41.33	f	58.71		68.75		76.73		71.27		62.98		53.55		37.73		9.87		47.18	b
1915	14.16		-----	z	26.07	b	54.05		52.97	a	63.08		68.03	a	64.81		59.65		51.39		36.11	b	21.86	b	46.56	a
1916	5.50	l	14.33		32.32		44.52		57.81		63.38		78.79		72.39		61.58		48.21		34.35		12.77		47.31	a
1917	10.79		10.96	a	29.29		44.77		53.33	a	64.15		72.44		68.50		61.20		40.84		39.47		10.53		42.19
1918	6.97	a	18.55		40.60		45.23		62.37		69.27		71.53		71.76		55.36	a	51.08		36.77		29.31		46.57
1919	27.43	b	19.59		33.81		45.95		57.58		70.62		75.76		69.07	a	63.13		43.81		28.10		14.08	a	45.74
1920	15.21		21.38		32.58	a	39.64	a	57.50		68.62	a	71.65		66.58		63.53		54.45		33.00	b	22.32		45.54
1921	24.53	b	27.84		39.26		50.37		60.52		74.07		75.90		70.66		62.80		52.34		28.60		23.53		49.20
1922	14.37		14.82		35.15	a	48.25		61.39		71.03		69.89		72.42		65.30		53.19		39.02		18.31		46.93
1923	23.02		16.61	a	26.55	a	46.23		58.95		69.75		75.58		68.32		62.63		46.10		37.48		28.71		46.66
1924	9.60		23.31		29.85		47.37		52.00		65.67		69.77		70.15		57.73		55.73		34.45		9.92		43.80
1925	12.69		22.79		38.02		55.65		57.34		68.72		72.66		73.23	a	66.92		37.39		33.43	a	18.37		46.43
1926	18.21		28.05		31.03		46.15		64.95		66.52		75.24		71.92		59.87		48.73	a	28.80		16.95		46.37
1927	19.47		26.18		35.92		46.28		56.08		65.37		69.32		66.34		63.72		51.95		31.32		9.35		45.11
1928	20.00		23.43		35.48		40.40		60.85		62.70		72.26		70.61		57.80		49.97		34.50		27.06		46.26
1929	5.97		8.71		36.11		47.83		55.92		65.20		73.27		71.08		57.93	a	48.29		28.47		19.16		43.16
1930	5.45		30.95		34.13		49.38		58.13		67.13		76.15		73.69		61.48		48.39		37.20		26.53		47.38
1931	28.06		33.70		34.32		49.63		57.27		75.33		75.08		72.10		69.45		54.08		37.50		28.61		51.26
1932	15.13		21.28		25.00		48.02		60.84		70.65		74.75	a	71.63		59.95		46.50		29.82		16.10		44.97
1933	27.02		15.19	a	33.00		46.28		57.69		76.22		75.29		68.35		65.90		47.40		35.07	a	21.94		47.45
1934	22.23		23.77		31.90		48.10		69.95		71.95		75.15		70.32		56.88		53.85		37.83	a	17.66		48.30
1935	15.40		29.29		38.26		44.77		53.44		64.47		79.68		72.95		63.67		47.24		29.25		20.44		46.57
1936	3.27		-1.93		33.74		42.68		64.48	a	69.00		83.08		77.56		66.47	a	47.72	a	32.80		23.71		45.22
1937	4.21		15.73		30.90		44.93		60.84		66.60	a	75.79		77.05		64.12		46.97		31.22	a	18.03		44.70
1938	14.84		20.00		38.37		48.72		57.02		68.12		75.15		75.65		65.65		57.32		32.82		24.31		48.16
1939	24.52		12.32		33.58		46.30		66.26		69.77		75.39		69.85	a	66.80		49.58		37.23		29.97		48.46
1940	6.23		20.00		28.08		44.97	a	58.35		69.28		75.94		69.42		66.92		56.82		28.02		24.24		45.69
1941	20.15		19.18		30.70	a	50.83		65.53		68.20		74.10		74.02	a	64.22		51.22	a	36.18		27.44		48.48
1942	20.66		21.66		35.63		52.53		55.87		67.17		72.06		71.45		56.98		49.45		35.21	a	17.66		46.36
1943	10.38	a	25.38		27.97		48.05		55.50		68.92		74.37		72.27		58.67		49.38	a	31.77		25.18		45.65
1944	28.32		22.29		26.79		42.48		63.37		69.12		71.27		70.32		61.58		51.06		37.17	a	21.92		47.14
1945	19.58		23.29		40.15		45.58		53.18		62.37		71.18		71.89		61.50		50.77		33.05		13.60		45.51
1946	16.58		23.02		43.08		52.30		55.42		68.59	a	73.45		68.82		60.67		50.47		32.55		24.63		47.46
1947	24.00		15.98		30.35		43.57		54.55		64.50		73.17	a	79.50		65.45		57.87		29.82		21.83	a	46.72
1948	15.29		19.10		30.05		52.47		58.81		66.35		73.53		72.74		66.67		49.52		34.18		20.24		46.58
1949	13.08		15.55		31.71		47.55		62.42		71.05		75.03		72.55	a	57.77		51.68		40.52		22.10		46.75
1950	7.08		20.12		27.08		39.03		55.56		68.00		67.89		66.95	b	62.13		53.45		31.20		17.76		43.02
1951	14.25	a	24.46		21.32		41.85		60.13		63.15		70.52		68.85		56.75		48.48		28.50		15.42		42.81
1952	12.98		26.53		27.74		48.55		58.27		71.83		73.53		70.15		63.55		45.66		34.70		22.53		46.34
1953	17.52		23.04		33.65		41.43	b	58.60	a	71.37		73.02		72.52		62.25		55.45		38.18		22.48		47.46
1954	12.61		34.64		29.24		49.80		54.02		70.17		76.02		70.81		63.05	a	47.90		40.25		24.55		47.75
1955	19.74		15.55		30.56		55.05		63.43	a	66.37		78.33	a	77.52		64.50		52.22	a	25.95	a	12.65		46.82
1956	12.60		14.72		28.84		42.65		60.89		75.03		70.97		71.29		61.73		57.50		33.85		25.55		46.30
1957	10.84		24.57		32.02		46.67		57.32		66.93		78.11		70.82		59.02		48.42		34.22		29.40		46.53
1958	24.15		17.05		32.27		47.43		62.52		64.78		70.03		74.71		64.83		53.70	a	35.98		17.89		47.11
1959	12.44		14.04		34.44		47.75		60.40		72.60		73.31		75.60		61.92		45.37		25.13		30.39		46.11
1960	15.84		16.20	a	18.90		47.48		58.61		66.33		73.10		72.89		62.75		50.68		36.72		21.44		45.08
1961	14.26		23.04		35.53		42.67		56.10		68.58		72.07	a	72.55		60.97		51.48		33.62		16.40		45.60
1962	12.69		17.71		24.55		45.82		63.79		67.57		71.10		71.31		59.37		53.08		39.67		23.69		45.86
1963	7.53	a	20.21		38.85		51.43		60.57	a	73.31	a	74.92		71.61		65.27		59.74		39.98		13.48		48.08
1964	23.48		26.81		28.15		48.78		63.74		70.15		76.69		68.08		61.03		50.29		35.52		16.89		47.47
1965	14.05		15.96		22.32		46.53	a	62.48		69.32		72.70	a	70.23		54.75		53.37		34.78		29.41	o	46.95	a
1966	8.11		18.66		38.32		42.75		57.48	a	68.70		77.53		68.65		60.88		50.58		32.62		21.05	b	45.44
1967	18.50		17.23		38.33	a	48.88		54.37	a	66.90		71.92		69.50		61.72	a	50.33	b	33.76	a	24.13	a	46.30
1968	17.29		20.66		41.34		49.93		55.48	a	71.38		71.74		73.73	a	62.20		51.60		35.45		19.05	b	47.49
1969	10.48	b	20.84		21.79		49.02		61.55		63.62		-----	z	73.00	f	62.67		44.69		33.78		20.87		38.93	b
1970	4.89		18.45		26.58		45.90		59.95		70.42		74.23		71.92		61.53		47.05		32.35		17.62	a	44.24
1971	9.79		18.98		30.24		48.48		56.37		73.25		69.81		71.13		60.63		53.00		33.62		18.23		45.29
1972	8.95		12.29		31.02		43.95		60.56		68.28		70.47		70.34		59.58		45.08		32.90		14.92		43.20
1973	18.13		22.11		39.77		46.83		55.87		70.00		73.45		74.29		59.75		53.47		-----	z	17.27		48.27	a
1974	11.87		23.21		33.87		48.02		56.82		68.15		78.02		-----	z	56.85		49.06		34.55		23.34		43.98	a
1975	16.15		15.38		23.76		41.12		61.47		66.55		74.75	c	72.71		57.62		51.40		35.02		20.19		44.68
1976	14.45		29.31		32.39		51.82		57.53		70.45		77.15		74.38	a	62.78		44.22	a	28.70		-----	z	49.38	a
1977	4.42		25.71		37.53		54.40		67.35	a	71.38		76.13		68.07	b	62.50	a	47.88	b	32.91	b	18.11	c	47.20
1978	2.98		-----	z	29.52		46.24	a	59.88	b	69.59	c	73.37	a	71.91	b	68.66	e	49.05		30.87		14.66	b	46.97	a
1979	1.24		6.09		27.62	b	44.32	b	55.02	b	68.74	a	74.05		69.13		63.17		47.05	a	31.10		26.70	a	42.85
1980	18.83	a	17.24		29.78	a	49.45		60.92		69.76	a	75.21		70.90		62.50		45.83	a	37.57		20.65		46.55
1981	20.97		24.19	a	35.91	c	53.47	a	57.77		69.34	a	73.72	a	69.77		62.12		46.56		37.98	a	17.65	a	47.45
1982	2.97	a	-----	z	31.69		43.83		61.07	c	63.73	b	75.21		71.00	a	60.20	c	48.05	a	31.31	c	24.59	b	46.70	a
1983	18.47	a	24.72	a	32.30	a	41.18		54.94		67.35		77.40	a	78.15		61.97		48.42		34.40		0.98	a	45.02
1984	15.21		26.76		24.78	b	45.62	a	56.27		69.26	a	72.55	a	73.26		56.55		48.79		33.98		20.03		45.26
1985	10.00	a	17.02		41.34	l	51.05	a	62.95	a	65.19	a	71.83	b	66.85		59.09	a	47.13		22.22	a	7.53		43.71	a
1986	19.68		16.26	a	34.92	e	49.18	b	60.44		71.93		75.58		66.50		59.98	a	49.35		28.15	d	24.19		46.35
1987	22.16	b	33.00	a	37.13		52.00	b	61.22	o	72.30		75.65	a	68.89		62.18		43.07	c	38.82		24.47		48.15	a
1988	7.80	a	13.07		35.79		44.60		65.10		76.15		74.68		73.69		62.07	b	44.20	a	33.62		21.08		45.99
1989	24.76		9.43		28.69		46.32		58.19		67.12		76.13		71.18		59.77		49.16		29.07		10.81		44.22
1990	26.50		22.68		35.53		45.23		55.81		69.60		71.37		70.39		65.13		46.45		34.23		15.73		46.55
1991	10.10		26.77		35.89		48.62		61.55		72.55		72.16		70.92		60.68		45.97		23.40		22.82		45.95
1992	24.79		27.80	a	35.24		41.03		59.85		66.17		65.23		64.27	a	58.90		47.69		29.82		19.88	a	45.06
1993	11.52	c	13.48		26.05		42.58		56.23		63.93	a	70.53	a	70.52		55.08		46.65		28.33		20.40		42.11
1994	6.26	b	10.36		35.24		45.72	a	61.80	a	70.69	a	68.77		67.58		63.22		50.82		35.66	a	21.24		44.78
1995	15.23	a	22.27		32.50		39.79	b	54.21		69.00		72.95		74.65	a	58.70		47.43	b	27.17		22.58		44.71
1996	10.07	a	22.00	a	25.10	a	42.40	a	54.55		69.92		69.85		69.67	a	59.07		48.94		24.19	a	12.07	a	42.32
1997	8.42		18.88		30.21	b	41.59	b	52.05	a	70.92		73.71		70.48		63.48	a	50.88	a	28.63		25.60	a	44.57
1998	20.12	b	32.02	a	28.69		47.33		64.35		65.55		72.87	a	71.89		67.62		51.50		36.55		25.84		48.69
1999	12.84		29.21		34.43	a	46.71	a	59.63		67.35		75.53		70.40		60.12		47.90		41.33		24.92	a	47.53
2000	17.19		28.71		39.72	a	46.19	a	60.03	b	66.54	b	72.84		71.97	a	60.88		50.75	a	26.33		6.89		45.67
2001	17.70	a	11.58	b	25.37	a	47.58	d	59.94		68.53	a	75.60	a	72.15		60.75		48.18		45.37		26.52		46.60
2002	23.18		27.59		24.22	a	47.27	b	54.42	a	72.57	a	77.39		71.02	a	63.84	a	41.92		32.47		25.37	a	46.77
2003	15.58	a	17.04	a	31.30	a	48.60		56.76		68.07		73.67	e	73.63		59.33		50.76		31.65		24.10		45.87
2004	13.72	b	17.60		38.10		48.77		57.25	a	66.14	a	71.39		66.13	a	66.43		50.45	a	37.60		24.68		46.52
2005	14.42	a	28.39		31.94		50.82		57.24		72.27		74.66		71.13		66.79	a	51.42	a	37.48		17.66		47.85
2006	30.10	a	22.98	b	32.90	a	51.37		60.55		69.22		76.31		71.85	a	57.43	a	46.50		35.25		27.47	a	48.49
2007	17.13	a	12.39		37.48		44.95		64.23	a	70.92		74.87		72.84		63.30		53.81		34.30		15.65		46.82
2008	11.13		12.62		27.89		42.19	c	56.15	a	68.47		73.42		70.61		62.22		48.82		34.73		13.52		43.48
2009	11.44		22.89	a	32.35		44.20		58.52		67.58		68.32		67.85		63.34	b	42.02		41.48	b	15.70	a	44.64
2010	10.29		14.25		35.95		53.23		58.66		69.28	a	73.94		74.82		60.45	a	52.35		33.36	a	15.00	a	45.97
2011	10.02		17.24	a	29.63		44.33		58.19		68.00	c	77.82	a	70.55		59.17		52.02		35.18		25.23		45.61
2012	22.15	a	25.82	a	47.74		51.32		62.92		71.98		79.29		71.23		61.53		44.71		35.15		22.32		49.68
2013	16.76		21.11		26.85		37.93		56.27		67.60		72.45		70.82		65.97		48.18		30.37		12.69		43.92
2014	11.53		10.84		27.63		45.08		58.00		68.40		68.79		69.92		61.22		50.24		28.50	e	24.61		43.73
2015	19.69		13.23		35.77	a	49.58		57.79		68.87		72.08		68.42		67.13		52.37		38.25		26.50	a	47.47
2016	16.26		25.71		39.42		47.97		58.87		72.37		71.78	a	71.31		65.72		51.81		41.42		19.28	a	48.49
2017	19.92		30.54		33.50		48.05		56.94		70.42		74.29		66.90		65.04	g	49.63		33.38		21.29		45.90	a
2018	13.94		13.61		32.73		35.90		64.71		73.50		73.27		69.95		64.82		44.60		28.18		24.87		45.01
2019	15.08		8.75		27.76		45.17		54.06		69.63		74.32		69.28	a	66.10		44.61		31.07	a	21.69		43.96
2020	18.69		21.60		36.48		43.63		56.32		74.43	a	75.11		72.37		61.16	a	42.85		38.35	c	25.61		47.22
2021	23.77		11.05		38.81		45.58		57.89		73.63		73.44		71.79		64.92		53.74		37.17		26.31		48.17
2022	15.06		17.71		32.79		40.53		59.08		70.85		74.40		70.90		64.12		48.94		33.47		15.24		45.26
2023	17.00		17.14		24.81	b	44.93		62.89		72.72		69.97		72.08		66.95		50.63		37.24	a	31.82		47.35
2024	15.55		33.05		35.95		46.94	f	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	28.18	i
Period of Record Statistics
MEAN	15.21		19.61		32.23		46.57		58.69		68.83		73.55		71.10		62.13		49.16		33.59		20.51		46.05
S.D.	6.37		6.65		5.29		3.98		3.54		3.08		2.78		2.73		3.25		3.86		4.45		5.60		1.71
SKEW	0.02		-0.20		0.09		-0.16		0.42		0.17		0.10		0.32		-0.05		-0.08		-0.44		-0.61		-0.10
MAX	30.10		34.64		47.74		55.65		69.95		76.22		83.08		79.50		69.45		59.74		45.37		31.82		51.26
MIN	1.03		-1.93		18.90		35.90		50.42		62.37		65.23		64.27		54.42		37.39		18.04		0.98		42.11
YRS	123		123		124		123		123		123		124		123		124		125		122		122		102