ROCK RAPIDS, IA

Average of Maximum Temperature (Degrees Fahrenheit)

(137147)

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	-----	z	-----	z	-----	z	44.00	w	70.48		85.83		89.26		84.55		80.17		62.65		45.20		30.03	a	68.52	d
1894	22.47	a	26.41	a	48.03		63.68	b	76.35		88.87		94.74		87.13		78.83		64.33	a	44.29	b	36.35		60.96
1895	19.76	b	26.57		41.97		69.90		74.60	a	81.20		88.32		90.19		82.28	a	64.03		40.04	b	30.42		59.11
1896	36.14	b	34.48		36.70	a	55.55	j	72.06		78.07		87.45		86.80	a	70.20		56.39		28.76	a	35.84		56.63	a
1897	22.86	b	28.46		34.13		58.47		71.70	a	80.47		87.90		81.13		87.21	a	68.20	a	34.00	i	24.19		58.61	a
1898	33.74		-----	z	47.79	b	63.38	a	67.42		-----	z	83.43	a	-----	z	-----	z	53.10		-----	z	22.70	a	53.08	e
1899	24.27	a	12.36	c	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	18.31	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	23.41	d	23.82	a	44.07	b	55.53		75.81		79.03		81.00		80.77		73.20		62.45		57.76	a	33.80	a	57.55
1905	20.48	b	22.30	a	51.17	a	54.60		68.39		79.10		81.39		86.58		78.47		53.00	a	48.83	a	35.38	b	56.64
1906	31.67	a	34.63	a	34.86	b	62.63		-----	z	76.93		83.10		84.10		75.07		53.42		41.60		30.03	b	55.28	a
1907	15.54	c	29.43		46.73	a	45.87		62.77		75.93		83.52		84.06		74.17		61.61		44.90		34.73	a	54.94
1908	31.42		27.04	b	44.19		59.60		66.74		76.43		85.48		80.13		82.87		-----	z	-----	z	-----	z	61.54	c
1909	21.53	a	27.70	a	36.90		45.87		69.84		78.10		84.19		89.48		75.53		59.19		49.57		17.89	c	54.65
1910	24.03	a	23.61		61.32		65.86	a	-----	z	89.86	i	89.45		82.20	a	73.13		65.20	a	42.47		32.90		56.02	b
1911	26.00	a	31.00		48.23		58.70		79.10		91.73		87.87		80.81		76.30		54.03		36.70		31.84		58.53
1912	9.61		26.33	b	35.23		61.67		73.23		78.23		86.32		81.00		70.47		60.77		47.31	a	30.16		55.03
1913	-----	z	25.79		37.32		57.30		65.94		-----	z	-----	z	86.74		78.45	a	55.10		45.90	a	35.13	a	54.18	c
1914	30.35		18.78	a	-----	z	52.62	d	68.71		76.40		88.61		84.29		76.83		67.06		51.17		18.55		57.58	a
1915	24.45		-----	z	33.03	a	66.63		64.03	a	74.67		79.42		78.87		71.80		65.90		46.90	a	30.37	a	57.83	a
1916	18.84	f	23.76		42.94		56.20		71.77		76.60		91.26		85.55		75.60		61.26		46.43		24.35		59.61	a
1917	21.35		20.67	a	38.58		55.37		66.68		77.27		85.42		81.97		73.63		54.13		51.03		20.94		53.92
1918	18.32		30.89		54.00		59.10		76.71		82.70		84.68		83.74		69.23		62.94		44.90		36.61		58.65
1919	36.86	b	27.61		44.26		55.63		70.71		81.13		88.10		83.06		75.47		54.16		37.60		21.65		56.35
1920	23.90		29.62		44.10		49.57		70.48		80.67		84.00		80.61		74.57		66.71		41.04	b	29.71		56.25
1921	32.31	b	38.93		50.77		63.87		72.26		87.23		88.97		82.03		74.67		65.42		37.57		33.55		60.63
1922	24.84		26.32		45.10		60.17		72.45		84.50		81.87		85.55		78.63		66.58		46.43		29.42		58.49
1923	32.94		30.29		38.48		59.83		72.10		80.47		87.71		80.26		73.37		56.77		48.37		39.42		58.33
1924	20.87		33.45		37.55		60.97		65.52		76.70		83.19		82.55		69.60		68.35		45.57		19.10		55.28
1925	22.94		31.43		50.26		69.63		73.13		81.00		86.87		87.48		79.07		46.97		44.23		25.90		58.24
1926	28.81		36.50		42.42		62.57		79.35		81.03		89.45		84.00		70.07		60.47	a	37.17		26.48		58.19
1927	28.06		35.61		44.81		57.13		66.90		77.73		83.19		80.29		74.20		66.52		39.47		19.61		56.13
1928	29.26		32.31		46.61		53.53		75.71		75.17		84.84		82.74		70.67		61.84		42.80		36.45		57.66
1929	15.65		20.25		46.42		60.60		69.29		77.83		85.39		84.65		68.17	a	58.90		36.87		26.97		54.25
1930	15.23		40.54		46.77		62.70		70.39		80.53		91.03		87.23		75.90		59.39		49.33		36.65		59.64
1931	41.68		47.14		46.65		65.00		71.81		88.80		89.65		85.03		82.17		65.13		48.10		35.52		63.89
1932	24.26		31.62		34.19		59.43		73.87		82.33		87.93	a	83.58		74.03		58.13		39.70		27.19		56.36
1933	38.13		27.64		42.87		59.17		69.03		91.47		88.39		80.84		78.13		61.35		47.67		32.13		59.73
1934	31.48		34.39		44.74		61.33		86.19		84.73		87.19		83.58		69.83		67.13		47.10	a	26.77		60.37
1935	24.32		37.39		48.81		54.50		63.16		75.00		92.32		85.45		77.23		60.32		38.13		28.26		57.08
1936	12.45		8.28		44.03		55.53		76.77	a	82.23		100.16		92.42		79.55	a	61.93	a	43.20		32.52		57.42
1937	14.68		26.07		39.65		54.10		72.16		77.87		89.58		88.84		77.57		58.26		41.97		27.97		55.73
1938	24.65		28.75		49.03		60.17		66.84		79.60		87.16		89.23		78.43		71.45		43.63		33.42		59.36
1939	32.52		24.00		45.68		59.40		80.65		80.93		87.71		82.68		82.63		62.26		52.10		41.90		61.04
1940	16.71		28.59		35.19		56.23		72.35		81.23		88.52		79.29		80.13		70.45		36.90		31.58		56.43
1941	28.03		27.68		38.61		59.70		77.87		78.00		86.00		86.57	a	75.47		62.65		46.67		37.19		58.70
1942	30.16		29.43		43.90		66.90		65.87		76.40		83.39		82.55		66.57		62.58		46.80		26.42		56.75
1943	19.87	a	36.50		40.03		61.70		67.74		78.50		85.87		82.35		71.30		64.13		39.83		37.39		57.10
1944	39.84		32.72		34.42		51.87		74.23		79.37		82.68		80.29		72.57		64.90		44.24	a	29.68		57.23
1945	27.03		32.61		52.42		57.30		64.61		72.07		82.26		83.23		73.00		65.29		42.70		20.81		56.11
1946	27.65		33.00		53.10		65.37		67.23		79.43		84.65		81.10		71.80		62.06		42.10		34.52		58.50
1947	33.77		25.07		38.26		52.53		66.71		74.40		85.77	a	93.10		78.23		69.39		36.50		30.27	a	57.00
1948	25.03		29.62		40.52		65.17		70.87		76.40		85.39		84.26		79.87		62.94		42.23		29.29		57.63
1949	21.61		25.82		39.13		60.67		73.58		82.53		86.94		84.27	a	70.40		63.35		53.03		32.61		57.83
1950	17.94		30.11		36.26		48.50		67.03		79.27		78.35		78.83	b	74.77		66.35		43.40		27.42		54.02
1951	25.37	a	35.43		29.84		50.47		70.58		72.77		80.61		78.74		67.50		59.26		38.80		24.58		52.83
1952	23.84		33.83		34.55		60.57		70.00		83.53		85.23		81.65		76.90		61.39		46.93		31.48		57.49
1953	27.13		30.96		43.13		50.96	b	69.97	a	82.50		84.06		83.61		76.40		70.06		50.07		32.26		58.43
1954	23.45		43.79		37.16		63.37		66.71		80.47		88.00		80.81		73.55	a	56.45		52.07		32.29		58.18
1955	29.19		25.79		41.84		69.50		77.10	a	76.63		89.10	a	90.68		78.33		66.52		36.97	a	22.06		58.64
1956	22.39		25.93		38.97		56.10		72.58		88.30		82.58		82.71		77.17		72.00		43.53		35.61		58.16
1957	21.68		34.89		41.61		59.03		67.74		78.13		88.90		80.87		69.90		57.45		41.93		39.32		56.79
1958	34.19		29.25		40.03		59.73		77.03		76.47		80.35		89.00		78.17		67.52		48.63		29.39		59.15
1959	23.23		25.64		43.68		62.07		71.26		84.53		86.65		86.23		73.17		55.74		34.67		36.90		56.98
1960	24.23		24.21		28.68		58.27		71.13		76.63		85.42		84.03		73.80		63.68		48.03		31.61		55.81
1961	26.13		33.39		43.39		53.40		67.65		80.43		84.20	a	84.19		72.17		65.13		43.27		26.10		56.62
1962	23.74		24.86		31.90		58.30		74.03		77.47		81.13		82.94		70.97		64.68		49.97		34.58		56.21
1963	18.42		31.32		49.32		64.47		72.83	a	84.97		85.55		82.32		76.47		73.06		52.03		24.03		59.57
1964	34.77		38.86		39.32		60.37		76.55		82.73		88.23		79.42		71.70		64.00		46.10		26.61		59.06
1965	24.52		28.89		30.45		58.14	a	74.87		79.73		83.87		82.35		63.57		66.84		46.10		38.13	a	56.46
1966	18.06		29.54		50.74		53.50		72.70	a	80.47		89.81		80.87		72.10		64.71		44.03		30.93	a	57.29
1967	28.87		30.14		50.74		62.27		68.10	a	77.43		84.84		83.00		75.24	a	64.41	b	46.14	a	33.87	a	58.75
1968	28.23		31.76		56.55		63.90		69.80	a	84.57		83.06		86.33	a	73.77		64.13		44.93		26.87	a	59.49
1969	20.16		28.89		32.52		61.63		74.52		75.93		-----	z	85.68	f	76.90		55.29		44.07		30.23		50.01	b
1970	16.77		32.07		36.13		57.50		72.71		82.80		87.19		84.71		73.80		58.06		41.03		29.80	a	56.05
1971	20.10		28.82		40.39		62.77		70.35		85.07		82.23		86.23		74.50		65.26		44.57		27.32		57.30
1972	21.45		24.72		41.65		54.60		71.35		80.30		81.87		81.90		72.47		57.71		39.60		24.10		54.31
1973	27.48		30.96		47.84		58.73		68.94		83.17		84.52		86.90		70.47		66.52		-----	z	26.45		59.27	a
1974	24.29		33.43		45.35		60.33		68.90		81.10		92.26		-----	z	72.30		65.03		44.60		33.77		56.49	a
1975	27.06		25.71		34.35		49.50		75.77		78.20		89.35		84.55		70.60		66.74		46.57		28.26		56.39
1976	25.00		39.28		43.26		65.10		72.10		85.47		92.13		89.60	a	78.47		58.84		41.03		-----	z	62.75	a
1977	15.55		38.79		47.81		66.93		80.39		83.93		87.81		79.67	a	75.03		60.29		42.50	b	26.42		58.76
1978	13.90		-----	z	40.97		55.87		73.39		82.28	a	85.71		84.37	a	81.75	b	63.00		43.20		25.94		59.12	a
1979	12.26		18.96		36.00		54.41	a	68.32		81.31	a	87.42		81.06		78.37		62.23		41.53		37.13		54.92
1980	29.93	a	27.03		40.60	a	63.73		76.45		83.72	a	91.19		84.45		77.03		60.77		51.23		31.06		59.77
1981	34.58		37.64		53.48		67.62	a	71.77		83.45	a	85.60	a	81.06		78.50		58.58		49.83		27.93	a	60.84
1982	15.23		-----	z	40.77		57.30		72.47	a	77.17		87.52		84.03		72.00		60.32		39.77		34.23	a	58.25	a
1983	28.16		32.30	a	40.58		51.20		67.94		78.20		89.70	a	93.45		76.33		61.16		41.03		11.10	a	55.93
1984	25.74		36.41		34.30	a	54.90		68.23		80.55	a	85.58		87.32		72.07		60.65		46.97		33.32		57.17
1985	22.81		28.46		53.80	k	64.27		76.90		79.07		86.87		80.32		70.07		60.68		32.67		19.74		56.53	a
1986	30.84		26.43		47.16		62.30		73.16		85.13		89.52		81.16		72.80		62.52		38.75	b	35.84		58.80
1987	35.16		47.64		48.48		70.70		71.65	n	85.63		87.52		80.65		75.90		57.83	b	49.00		32.00		60.96	a
1988	20.50	a	24.55		47.74		58.20		78.87		90.37		87.90		87.10		75.27		58.26		44.47		31.16		58.70
1989	36.00		21.25		38.58		60.37		72.77		80.17		88.29		83.10		73.00		65.87		40.37		22.16		56.83
1990	38.19		35.89		46.35		60.20		68.13		81.70		82.68		82.26		79.23		60.71		46.43		26.26		59.00
1991	20.32		38.07		48.90		60.83		71.48		82.27		83.65		83.19		73.43		60.29		31.87		31.81		57.18
1992	33.61		34.43	a	46.06		51.13		74.84		78.10		75.00		75.23		71.97		61.00		35.50		28.61		55.46
1993	21.93	c	22.00		35.94		53.40		67.10		74.10	a	79.65		81.26		66.60		59.90		38.47		28.19		52.38
1994	15.43	a	21.00		45.65		59.50		74.97	a	81.24	a	80.00		79.48		75.50		62.61		46.50		29.74		55.97
1995	23.45		32.04		41.39		50.03		66.23		79.87		85.00		85.84		71.63		58.13		36.43		30.61		55.05
1996	20.35		31.55		36.68		56.10	a	63.74		81.07		81.71		81.67	a	70.43		63.10		31.90		19.47	a	53.15
1997	17.39		28.32		40.55		53.50		63.97		83.47		84.77		82.84		77.83		65.13		37.40		33.87		55.75
1998	27.13		40.15	a	36.55		59.43		77.55		76.57		83.87		82.16		83.47		63.65		45.63		37.97		59.51
1999	21.94		39.07		46.45		57.30		71.81		77.37		87.00		83.35		74.73		63.52		56.53		37.37	a	59.70
2000	30.13		40.28		52.90	a	59.66	a	73.35		78.46	b	84.26		84.53	a	76.10		63.06		35.30		16.26		57.86
2001	27.35		20.79		34.94		61.11	c	71.29		80.47		86.13	a	83.94		72.67		61.65		60.33		36.16		58.07
2002	36.55		40.75		34.73	a	60.24	a	67.81		84.93		90.71		83.23		77.07		52.23		44.00		37.90		59.18
2003	26.16		30.46		44.29		62.13		68.61		80.20		86.67	d	87.71		73.93		65.61		42.33		32.45		58.38
2004	25.34	b	26.79		48.06		64.47		69.23	a	78.00		83.29		79.29		79.70		62.58		49.40		35.45		58.47
2005	23.94		39.75		44.03		63.33		68.39		83.23		85.68		83.00		80.30		64.90		48.87		25.32		59.23
2006	37.13		33.39		43.00		62.90		72.45		81.97		89.00		83.35		68.63		59.23		48.30		37.29		59.72
2007	27.06		21.96		47.55		56.93		76.68		82.70		88.03		83.77		76.97		65.55		45.83		24.84		58.16
2008	21.32		22.38		37.06		53.41	a	68.47	a	80.07		85.23		83.26		75.60		61.16		44.50		23.65		54.68
2009	22.23		35.11		43.81		56.43		70.77		78.37		79.77		80.16		76.23		50.45		53.77		24.40	a	55.96
2010	19.29		24.46		44.94		66.03		70.97		80.17	a	85.10		85.81		73.28	a	67.39		44.14	a	23.97	a	57.13
2011	19.23		26.71		39.16		54.07		70.00		79.30	c	89.00	a	82.68		73.00		66.39		48.07		35.97		56.96
2012	32.97	a	36.96	a	60.68		65.13		75.35		84.30		91.68		84.87		78.23		57.00		46.80		32.39		62.20
2013	27.00		30.21		36.19		48.60		67.23		78.17		84.29		82.19		78.97		59.23		41.73		23.42		54.77
2014	23.90		22.79		39.39		58.40		70.45		79.50		79.74		79.87		73.23		63.29		36.27		31.23		54.84
2015	28.65		23.00		50.00	a	63.43		69.19		79.77		83.81		79.32		78.90		64.97		48.73		32.77		58.55
2016	24.48		32.72		50.23		59.50		70.65		83.97		83.94		82.32		77.40		64.03		52.90		28.30	a	59.20
2017	26.61		40.82		42.42		59.23		68.26		82.87		86.29		77.71		77.17	g	61.90		44.63		31.03		56.53	a
2018	23.71		24.82		40.45		45.97		76.97		83.57		84.61		81.06		74.83		55.16		37.30		32.48		55.08
2019	23.84		17.96		37.77		56.87		64.48		80.63		84.58		80.23	a	76.30		54.35		40.34	a	29.45		53.90
2020	26.32		31.38		46.58		57.23		65.97		86.21	a	87.23		84.97		73.76	a	54.81		50.85	c	36.77		58.51
2021	31.29		19.64		50.61		57.83		68.97		87.57		84.94		83.42		78.50		65.16		47.40		35.90		59.27
2022	27.97		30.79		44.13		52.73		71.06		83.07		85.90		82.77		78.73		63.29		44.00		22.68		57.26
2023	24.71		27.86		33.03	b	56.77		76.13		84.77		81.97		83.84		80.10		61.71		50.48	a	41.10		58.54
2024	22.32		43.66		49.52		58.95	k	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	38.50	i
Period of Record Statistics
MEAN	25.28		29.94		42.68		58.79		71.28		80.74		85.92		83.50		75.06		61.94		44.15		30.00		57.44
S.D.	6.33		6.66		6.33		5.21		4.18		3.78		3.53		3.17		3.92		4.61		5.51		5.74		2.03
SKEW	0.18		0.00		0.25		-0.21		0.46		0.48		0.28		0.71		0.03		-0.41		-0.04		-0.49		0.02
MAX	41.68		47.64		61.32		70.70		86.19		91.73		100.16		93.45		87.21		73.06		60.33		41.90		63.89
MIN	9.61		8.28		28.68		45.87		62.77		72.07		75.00		75.23		63.57		46.97		28.76		11.10		52.38
YRS	125		123		124		124		123		123		124		123		124		125		122		124		106