ROCK RAPIDS, IA

Maximum of Maximum Temperature (Degrees Fahrenheit)

(137147)

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	-----	z	-----	z	-----	z	58.00	w	86.00		95.00		99.00		94.00		99.00		80.00		72.00		42.00	a	-----	z
1894	41.00	a	46.00	a	80.00		84.00	b	95.00		100.00		106.00		100.00		90.00		80.00	a	60.00	b	54.00		106.00	g
1895	37.00	b	60.00		77.00		86.00		92.00	a	90.00		96.00		100.00		103.00	a	80.00		66.00	b	42.00		103.00	f
1896	54.00	b	70.00		62.00	a	82.00	j	88.00		94.00		101.00		99.00	a	86.00		78.00		52.00	a	48.00		101.00	o
1897	50.00	b	42.00		54.00		82.00		89.00	a	96.00		100.00		96.00		96.00	a	91.00	a	52.00	i	45.00		100.00	n
1898	45.00		-----	z	64.00	b	84.00	a	86.00		-----	z	94.00	a	-----	z	-----	z	74.00		-----	z	40.00	a	-----	z
1899	44.00	a	60.00	c	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
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	40.00	d	49.00	a	60.00	b	75.00		92.00		92.00		92.00		90.00		88.00		78.00		70.00	a	58.00	a	92.00	i
1905	50.00	b	64.00	a	78.00	a	70.00		80.00		93.00		96.00		96.00		88.00		87.00	a	68.00	a	48.00	b	96.00	h
1906	54.00	a	60.00	a	64.00	b	82.00		-----	z	92.00		92.00		98.00		92.00		70.00		64.00		50.00	b	-----	z
1907	40.00	c	60.00		76.00	a	70.00		92.00		94.00		98.00		94.00		86.00		80.00		60.00		50.00	a	98.00	e
1908	48.00		40.00	b	76.00		86.00		83.00		91.00		99.00		90.00		92.00		-----	z	-----	z	-----	z	-----	z
1909	44.00	a	48.00	a	50.00		70.00		95.00		91.00		95.00		97.00		88.00		78.00		71.00		48.00	c	97.00	e
1910	38.00	a	42.00		85.00		85.00	a	-----	z	96.00	i	95.00		96.00	a	92.00		85.00	a	56.00		50.00		-----	z
1911	52.00	a	50.00		68.00		78.00		94.00		102.00		107.00		93.00		96.00		70.00		52.00		50.00		107.00	a
1912	38.00		38.00	b	62.00		81.00		84.00		98.00		98.00		98.00		96.00		70.00		67.00	a	45.00		98.00	c
1913	-----	z	60.00		65.00		85.00		92.00		-----	z	-----	z	96.00		101.00	a	80.00		62.00	a	56.00	a	-----	z
1914	54.00		38.00	a	-----	z	85.00	d	90.00		93.00		98.00		95.00		87.00		83.00		73.00		45.00		-----	z
1915	42.00		-----	z	52.00	a	84.00		90.00	a	87.00		88.00		89.00		86.00		81.00		75.00	a	47.00	a	-----	z
1916	42.00	f	45.00		64.00		74.00		92.00		91.00		96.00		95.00		94.00		84.00		70.00		58.00		96.00	f
1917	47.00		42.00	a	68.00		78.00		91.00		92.00		101.00		91.00		87.00		70.00		67.00		42.00		101.00	a
1918	48.00		50.00		78.00		74.00		91.00		95.00		95.00		94.00		83.00		84.00		61.00		54.00		95.00
1919	54.00	b	44.00		70.00		71.00		88.00		93.00		97.00		94.00		88.00		78.00		54.00		43.00		97.00	b
1920	45.00		41.00		73.00		62.00		85.00		94.00		97.00		90.00		88.00		82.00		56.00	b	44.00		97.00	b
1921	53.00	b	62.00		77.00		82.00		90.00		98.00		97.00		93.00		88.00		80.00		58.00		60.00		98.00	b
1922	40.00		41.00		64.00		72.00		84.00		100.00		89.00		93.00		96.00		87.00		66.00		46.00		100.00
1923	45.00		51.00		65.00		83.00		86.00		95.00		95.00		89.00		85.00		74.00		60.00		56.00		95.00
1924	47.00		55.00		53.00		84.00		92.00		88.00		92.00		94.00		82.00		79.00		68.00		47.00		94.00
1925	37.00		45.00		76.00		84.00		96.00		92.00		102.00		95.00		99.00		61.00		60.00		48.00		102.00
1926	40.00		52.00		70.00		92.00		95.00		101.00		106.00		96.00		87.00		76.00	a	61.00		40.00		106.00	a
1927	43.00		51.00		66.00		84.00		82.00		98.00		95.00		92.00		91.00		81.00		54.00		40.00		98.00
1928	47.00		50.00		81.00		80.00		90.00		83.00		93.00		95.00		85.00		91.00		59.00		49.00		95.00
1929	39.00		35.00		64.00		84.00		84.00		92.00		95.00		97.00		89.00	a	77.00		49.00		48.00		97.00	a
1930	45.00		58.00		72.00		85.00		85.00		96.00		106.00		107.00		88.00		87.00		67.00		55.00		107.00
1931	64.00		57.00		60.00		89.00		92.00		104.00		102.00		98.00		101.00		79.00		74.00		48.00		104.00
1932	37.00		56.00		64.00		74.00		94.00		94.00		102.00	a	97.00		86.00		85.00		64.00		53.00		102.00	a
1933	51.00		55.00		63.00		77.00		92.00		104.00		100.00		91.00		92.00		81.00		69.00		54.00		104.00
1934	55.00		57.00		71.00		90.00		106.00		99.00		103.00		107.00		87.00		86.00		70.00	a	41.00		107.00	a
1935	42.00		50.00		74.00		78.00		74.00		88.00		105.00		98.00		92.00		80.00		62.00		44.00		105.00
1936	37.00		40.00		64.00		83.00		92.00	a	103.00		111.00		109.00		94.00	a	82.00	a	61.00		48.00		111.00	c
1937	35.00		44.00		65.00		76.00		84.00		102.00		100.00		104.00		96.00		84.00		70.00		48.00		104.00
1938	45.00		41.00		70.00		82.00		84.00		94.00		95.00		99.00		94.00		91.00		74.00		51.00		99.00
1939	45.00		46.00		80.00		87.00		97.00		94.00		102.00		91.00		101.00		86.00		71.00		64.00		102.00
1940	37.00		41.00		65.00		82.00		91.00		96.00		105.00		93.00		96.00		84.00		63.00		42.00		105.00
1941	45.00		41.00		63.00		78.00		95.00		91.00		101.00		99.00	a	90.00		75.00		67.00		57.00		101.00	a
1942	52.00		40.00		67.00		83.00		87.00		90.00		98.00		95.00		88.00		84.00		65.00		46.00		98.00
1943	38.00	a	62.00		86.00		82.00		94.00		95.00		94.00		93.00		86.00		83.00		55.00		53.00		95.00	a
1944	63.00		51.00		54.00		69.00		89.00		96.00		93.00		94.00		86.00		78.00		69.00	a	42.00		96.00	a
1945	44.00		47.00		72.00		77.00		82.00		89.00		98.00		97.00		95.00		85.00		71.00		50.00		98.00
1946	39.00		54.00		80.00		87.00		80.00		95.00		95.00		97.00		89.00		74.00		57.00		58.00		97.00
1947	59.00		47.00		70.00		77.00		79.00		91.00		108.00	a	105.00		100.00		89.00		54.00		43.00	a	108.00	b
1948	46.00		55.00		67.00		85.00		95.00		88.00		99.00		98.00		92.00		76.00		68.00		48.00		99.00
1949	43.00		45.00		59.00		89.00		92.00		95.00		98.00		95.00	a	84.00		80.00		74.00		51.00		98.00	a
1950	40.00		43.00		65.00		73.00		92.00		90.00		86.00		90.00	b	87.00		89.00		70.00		51.00		92.00	b
1951	52.00	a	54.00		45.00		80.00		82.00		85.00		92.00		91.00		83.00		87.00		62.00		54.00		92.00	a
1952	43.00		47.00		59.00		85.00		93.00		96.00		96.00		91.00		90.00		81.00		69.00		52.00		96.00
1953	42.00		44.00		64.00		81.00	b	92.00	a	100.00		95.00		93.00		93.00		91.00		74.00		50.00		100.00	c
1954	41.00		65.00		55.00		91.00		89.00		96.00		100.00		94.00		88.00	a	70.00		70.00		41.00		100.00	a
1955	49.00		43.00		66.00		80.00		87.00	a	91.00		100.00	a	101.00		98.00		85.00		63.00	a	40.00		101.00	c
1956	45.00		40.00		62.00		74.00		89.00		100.00		92.00		95.00		95.00		88.00		61.00		51.00		100.00
1957	37.00		52.00		61.00		82.00		86.00		89.00		98.00		96.00		84.00		79.00		54.00		58.00		98.00
1958	56.00		66.00		59.00		84.00		88.00		95.00		92.00		99.00		93.00		91.00		69.00		56.00		99.00
1959	48.00		39.00		66.00		84.00		94.00		98.00		100.00		95.00		96.00		74.00		57.00		50.00		100.00
1960	39.00		40.00		52.00		93.00		87.00		87.00		95.00		99.00		93.00		83.00		66.00		54.00		99.00
1961	46.00		47.00		66.00		80.00		85.00		95.00		93.00	a	96.00		87.00		83.00		61.00		58.00		96.00	a
1962	45.00		48.00		47.00		92.00		88.00		88.00		94.00		92.00		83.00		85.00		73.00		61.00		94.00
1963	54.00		57.00		78.00		84.00		88.00	a	96.00		95.00		95.00		95.00		94.00		67.00		57.00		96.00	a
1964	56.00		57.00		57.00		91.00		94.00		94.00		96.00		94.00		91.00		80.00		68.00		45.00		96.00
1965	45.00		51.00		54.00		87.00	a	89.00		89.00		96.00		101.00		84.00		79.00		74.00		50.00	a	101.00	b
1966	48.00		53.00		75.00		75.00		92.00	a	94.00		104.00		94.00		86.00		84.00		60.00		49.00	a	104.00	b
1967	42.00		54.00		90.00		86.00		101.00	a	91.00		100.00		93.00		85.00	a	88.00	b	67.00	a	51.00	a	101.00	f
1968	47.00		40.00		86.00		89.00		87.00	a	98.00		95.00		99.00	a	86.00		82.00		69.00		49.00	a	99.00	c
1969	39.00		37.00		51.00		79.00		93.00		93.00		-----	z	92.00	f	86.00		85.00		69.00		54.00		-----	z
1970	41.00		48.00		48.00		86.00		93.00		99.00		97.00		98.00		100.00		83.00		56.00		59.00	a	100.00	a
1971	41.00		54.00		68.00		81.00		85.00		98.00		93.00		97.00		97.00		82.00		71.00		39.00		98.00
1972	45.00		49.00		66.00		80.00		91.00		95.00		92.00		96.00		92.00		80.00		64.00		51.00		96.00
1973	48.00		47.00		68.00		76.00		92.00		97.00		95.00		98.00		85.00		82.00		-----	z	52.00		-----	z
1974	52.00		57.00		73.00		82.00		86.00		103.00		100.00		-----	z	89.00		84.00		68.00		52.00		-----	z
1975	40.00		40.00		64.00		74.00		93.00		92.00		98.00		94.00		90.00		88.00		75.00		44.00		98.00
1976	43.00		61.00		74.00		82.00		91.00		96.00		108.00		100.00	a	104.00		89.00		66.00		-----	z	-----	z
1977	39.00		63.00		71.00		89.00		91.00		97.00		98.00		90.00	a	88.00		74.00		63.00	b	53.00		98.00	c
1978	30.00		-----	z	84.00		79.00		93.00		99.00	a	97.00		96.00	a	97.00	b	82.00		75.00		42.00		-----	z
1979	27.00		39.00		50.00		80.00	a	91.00		100.00	a	95.00		96.00		89.00		82.00		65.00		56.00		100.00	b
1980	58.00	a	43.00		62.00	a	94.00		93.00		102.00	a	102.00		100.00		95.00		88.00		68.00		54.00		102.00	c
1981	66.00		68.00		70.00		90.00	a	85.00		96.00	a	100.00	a	92.00		93.00		75.00		67.00		44.00	a	100.00	d
1982	41.00		-----	z	58.00		81.00		85.00	a	91.00		101.00		97.00		86.00		79.00		60.00		57.00	a	-----	z
1983	42.00		51.00	a	70.00		74.00		91.00		95.00		99.00	a	102.00		95.00		82.00		63.00		30.00	a	102.00	c
1984	44.00		50.00		54.00	a	80.00		84.00		89.00	a	94.00		101.00		97.00		77.00		65.00		60.00		101.00	b
1985	45.00		57.00		74.00	k	91.00		92.00		97.00		98.00		94.00		95.00		77.00		60.00		38.00		98.00	k
1986	47.00		49.00		81.00		80.00		86.00		94.00		98.00		94.00		86.00		83.00		58.00	b	46.00		98.00	b
1987	62.00		63.00		79.00		95.00		87.00	n	98.00		99.00		99.00		88.00		87.00	b	64.00		47.00		99.00	p
1988	40.00	a	47.00		78.00		87.00		90.00		107.00		97.00		104.00		90.00		77.00		63.00		49.00		107.00	a
1989	58.00		53.00		78.00		86.00		92.00		96.00		103.00		92.00		92.00		84.00		62.00		51.00		103.00
1990	55.00		63.00		69.00		86.00		90.00		96.00		102.00		93.00		94.00		86.00		74.00		57.00		102.00
1991	40.00		58.00		76.00		88.00		91.00		94.00		96.00		95.00		90.00		82.00		53.00		45.00		96.00
1992	51.00		50.00	a	69.00		82.00		91.00		89.00		84.00		89.00		83.00		88.00		53.00		43.00		91.00	a
1993	39.00	c	40.00		63.00		69.00		81.00		89.00	a	89.00		93.00		87.00		86.00		57.00		45.00		93.00	d
1994	41.00	a	47.00		73.00		88.00		90.00	a	96.00	a	88.00		92.00		90.00		72.00		66.00		42.00		96.00	c
1995	38.00		52.00		71.00		68.00		80.00		97.00		102.00		95.00		87.00		85.00		53.00		50.00		102.00
1996	55.00		64.00		69.00		78.00	a	93.00		93.00		90.00		90.00	a	87.00		83.00		62.00		34.00	a	93.00	c
1997	41.00		44.00		76.00		75.00		87.00		95.00		98.00		94.00		90.00		91.00		55.00		51.00		98.00
1998	56.00		56.00	a	76.00		80.00		92.00		94.00		92.00		93.00		96.00		78.00		68.00		70.00		96.00	a
1999	42.00		56.00		73.00		76.00		87.00		92.00		96.00		95.00		91.00		82.00		80.00		55.00	a	96.00	a
2000	52.00		67.00		78.00	a	81.00	a	88.00		99.00	b	95.00		97.00	a	93.00		86.00		68.00		38.00		99.00	e
2001	43.00		38.00		55.00		85.00	c	95.00		96.00		91.00	a	95.00		87.00		90.00		75.00		56.00		96.00	d
2002	68.00		70.00		61.00	a	92.00	a	93.00		98.00		101.00		96.00		96.00		86.00		70.00		58.00		101.00	b
2003	57.00		51.00		76.00		86.00		83.00		92.00		100.00	d	99.00		92.00		87.00		65.00		49.00		100.00	d
2004	52.00	b	45.00		77.00		92.00		91.00	a	95.00		94.00		90.00		90.00		80.00		72.00		58.00		95.00	c
2005	52.00		60.00		74.00		81.00		85.00		95.00		98.00		93.00		92.00		88.00		77.00		42.00		98.00
2006	55.00		56.00		61.00		87.00		96.00		92.00		99.00		99.00		86.00		91.00		76.00		54.00		99.00
2007	44.00		46.00		77.00		93.00		93.00		92.00		98.00		94.00		90.00		88.00		65.00		37.00		98.00
2008	40.00		38.00		52.00		79.00	a	84.00	a	89.00		93.00		98.00		88.00		77.00		77.00		47.00		98.00	b
2009	39.00		57.00		71.00		89.00		95.00		94.00		87.00		93.00		88.00		71.00		71.00		52.00	a	95.00	a
2010	38.00		36.00		77.00		81.00		93.00		93.00	a	95.00		95.00		90.00	a	89.00		73.00	a	44.00	a	95.00	d
2011	38.00		49.00		63.00		75.00		90.00		100.00	c	97.00	a	95.00		91.00		87.00		63.00		53.00		100.00	d
2012	60.00	a	52.00	a	83.00		91.00		92.00		98.00		102.00		101.00		96.00		83.00		69.00		60.00		102.00	b
2013	47.00		48.00		62.00		85.00		97.00		91.00		94.00		94.00		91.00		82.00		57.00		48.00		97.00
2014	47.00		51.00		68.00		82.00		88.00		91.00		90.00		89.00		88.00		76.00		59.00		55.00		91.00
2015	47.00		46.00		77.00	a	84.00		86.00		96.00		94.00		90.00		90.00		87.00		71.00		49.00		96.00	a
2016	40.00		61.00		73.00		77.00		89.00		98.00		95.00		93.00		90.00		77.00		75.00		44.00	a	98.00	a
2017	45.00		68.00		73.00		80.00		87.00		92.00		95.00		87.00		92.00	g	79.00		65.00		57.00		95.00	g
2018	54.00		48.00		55.00		76.00		101.00		96.00		94.00		90.00		92.00		86.00		61.00		47.00		101.00
2019	45.00		51.00		68.00		83.00		84.00		98.00		96.00		89.00	a	88.00		88.00		56.00	a	42.00		98.00	b
2020	39.00		48.00		67.00		80.00		85.00		99.00	a	93.00		95.00		88.00	a	84.00		77.00	c	57.00		99.00	e
2021	47.00		48.00		75.00		86.00		93.00		99.00		97.00		89.00		91.00		82.00		68.00		58.00		99.00
2022	49.00		56.00		72.00		75.00		95.00		97.00		94.00		100.00		99.00		82.00		75.00		40.00		100.00
2023	38.00		42.00		46.00	b	89.00		90.00		92.00		97.00		99.00		99.00		92.00		66.00	a	59.00		99.00	c
2024	43.00		68.00		77.00		85.00	k	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	45.90		50.60		67.70		81.91		89.54		94.69		97.00		95.39		90.85		82.10		65.28		49.52		99.02
S.D.	7.38		8.48		9.53		6.28		4.83		4.23		4.69		4.07		4.82		5.70		6.78		6.70		3.86
SKEW	0.60		0.34		-0.25		-0.34		-0.09		0.10		0.19		0.68		0.52		-0.59		-0.21		-0.02		0.51
MAX	68.00		70.00		90.00		95.00		106.00		107.00		111.00		109.00		104.00		94.00		80.00		70.00		111.00
MIN	27.00		35.00		45.00		62.00		74.00		83.00		84.00		87.00		82.00		61.00		49.00		30.00		91.00
YRS	125		123		124		124		123		123		124		123		124		125		122		124		97