ARROWROCK DAM, ID

Maximum of Maximum Temperature (Degrees Fahrenheit)

(100448)

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
1911	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	52.00	m	46.00		-----	z
1912	46.00		54.00	a	65.00		79.00		87.00		101.00		101.00	a	97.00		86.00		81.00		65.00		48.00		101.00	b
1913	47.00	c	53.00		68.00		84.00		95.00		96.00		102.00		101.00		96.00		83.00		65.00		47.00		102.00	c
1914	52.00		55.00		74.00		79.00		97.00	a	99.00		101.00		100.00		94.00		86.00	a	70.00		48.00		101.00	b
1915	52.00		60.00		75.00		85.00		82.00		88.00		101.00	c	104.00		-----	z	-----	z	69.00		55.00	a	-----	z
1916	53.00	a	49.00		68.00		83.00		-----	z	97.00	r	100.00	a	95.00	b	-----	z	71.00	c	65.00	b	47.00	c	-----	z
1917	50.00	y	51.00		63.00		64.00	a	86.00	b	94.00		104.00	e	98.00	c	99.00	d	82.00	g	66.00	i	56.00	a	-----	z
1918	49.00	b	53.00	b	69.00	a	72.00	c	85.00	b	102.00	c	102.00	g	98.00	b	92.00	e	82.00		61.00	f	54.00	b	-----	z
1919	51.00	a	49.00		64.00	a	82.00	c	98.00	c	100.00	d	104.00	c	102.00		93.00	e	69.00	d	54.00		46.00	c	-----	z
1920	50.00	a	56.00	b	60.00	g	65.00	e	79.00	a	92.00		103.00	a	105.00		94.00		88.00	a	57.00	d	43.00	c	105.00	y
1921	49.00	f	54.00	b	67.00	b	75.00		82.00	a	93.00		101.00		98.00		91.00	b	81.00	f	67.00	b	48.00	c	101.00	x
1922	37.00	c	46.00	d	55.00	a	70.00		85.00	a	97.00		102.00	e	100.00	a	94.00	a	86.00		59.00	c	46.00	d	102.00	w
1923	56.00	e	46.00	a	69.00	a	77.00		86.00		91.00		99.00		100.00	d	98.00		80.00		57.00	c	45.00	e	100.00	s
1924	43.00		58.00	b	58.00	c	76.00	d	91.00		92.00		104.00		106.00		103.00		82.00	c	59.00	c	47.00	g	106.00	v
1925	44.00		48.00	c	65.00	b	79.00		84.00	b	99.00	b	104.00	c	101.00	b	94.00	b	72.00	b	55.00	b	51.00	b	104.00	v
1926	41.00		57.00		68.00	b	86.00		85.00	a	104.00	a	105.00		104.00	a	89.00	d	81.00	d	63.00	c	54.00	k	-----	z
1927	-----	z	52.00	e	60.00	b	85.00	c	92.00		95.00	d	100.00	a	98.00		96.00		85.00	a	61.00	d	45.00	h	-----	z
1928	40.00	f	49.00	a	72.00	c	77.00		91.00		94.00		107.00		107.00		97.00	d	79.00	h	61.00	e	46.00	g	-----	z
1929	39.00	e	44.00	f	65.00	c	71.00	a	92.00		95.00		101.00	e	108.00	d	101.00		82.00	f	56.00	d	56.00	c	-----	z
1930	49.00		54.00	a	68.00	a	85.00	c	88.00	a	94.00	b	104.00		103.00	b	94.00	b	73.00	d	60.00	g	40.00	b	104.00	y
1931	40.00	d	49.00	a	61.00	g	76.00	b	91.00		99.00		110.00		106.00		103.00	b	80.00		68.00	f	42.00	g	-----	z
1932	45.00	d	49.00	c	68.00	a	76.00	c	88.00	a	97.00		102.00	a	103.00	b	96.00		86.00		59.00	b	50.00		103.00	q
1933	43.00	b	41.00	b	53.00		78.00		89.00		100.00		108.00		106.00	a	95.00	a	84.00	c	57.00		52.00	a	108.00	j
1934	48.00		58.00	a	72.00	a	87.00		92.00		95.00	a	112.00	a	103.00	c	98.00	b	89.00	c	65.00	c	45.00	d	112.00	s
1935	42.00		51.00		63.00		72.00		87.00	a	94.00	a	106.00		103.00		92.00	b	89.00	c	50.00	b	46.00	a	106.00	j
1936	46.00	d	45.00	a	55.00	a	85.00		96.00	a	98.00	i	108.00		98.00		93.00		82.00	a	57.00	a	45.00	b	108.00	t
1937	32.00	d	42.00	a	59.00		78.00	a	87.00	a	99.00	a	98.00	w	97.00	a	96.00	a	80.00	c	64.00		53.00		-----	z
1938	48.00	c	55.00	a	55.00	d	79.00		90.00		92.00		101.00	a	98.00		97.00		80.00		47.00	a	44.00	b	101.00	l
1939	45.00	a	45.00	b	65.00	i	86.00		91.00		101.00		104.00		103.00		95.00		76.00		68.00		62.00	c	104.00	o
1940	50.00	b	61.00		72.00		79.00		92.00		108.00		105.00		105.00		95.00		81.00		55.00		56.00	b	108.00	d
1941	45.00		56.00		81.00		84.00		93.00		97.00		103.00		100.00		86.00		75.00		63.00		59.00	h	103.00	h
1942	47.00	c	49.00		66.00		80.00		88.00		91.00		105.00		103.00		95.00		87.00		59.00	d	42.00		105.00	g
1943	50.00	h	48.00		67.00		83.00		85.00		91.00		105.00		102.00		94.00		89.00		54.00		45.00	b	105.00	j
1944	42.00	b	49.00	a	63.00	a	74.00		87.00		95.00		101.00		99.00		97.00		82.00		55.00		47.00	b	101.00	f
1945	50.00		47.00		59.00		83.00		85.00		97.00		100.00		99.00		99.00		83.00		62.00		53.00		100.00
1946	41.00		47.00		66.00		88.00		83.00		91.00		104.00		102.00		92.00		65.00	a	55.00	a	51.00		104.00	b
1947	47.00		57.00		69.00		76.00		91.00		87.00		101.00		101.00		95.00		84.00		71.00		47.00		101.00
1948	50.00		51.00		61.00		78.00		91.00		99.00		98.00		99.00		94.00		82.00	a	59.00		46.00		99.00	a
1949	38.00		47.00	a	58.00		82.00		91.00		98.00		102.00		104.00		95.00		76.00		65.00		49.00		104.00	a
1950	46.00		53.00		62.00		76.00		81.00		95.00		102.00		100.00		105.00		84.00		64.00		54.00		105.00
1951	51.00		47.00		60.00		74.00		85.00		89.00		104.00	b	102.00		92.00		82.00		62.00		50.00		104.00	b
1952	41.00	c	47.00		57.00		82.00		86.00		96.00		100.00		98.00		94.00		83.00		58.00		47.00		100.00	c
1953	51.00	a	56.00		69.00		79.00		82.00		90.00		104.00	a	103.00		95.00		85.00		64.00		49.00		104.00	b
1954	50.00	a	57.00		63.00		74.00	d	94.00		98.00		100.00	a	99.00		95.00		79.00		69.00		54.00		100.00	f
1955	43.00		47.00		55.00		73.00		83.00		100.00		103.00	a	103.00		102.00		83.00		56.00	a	55.00		103.00	b
1956	51.00		55.00		71.00		81.00	a	89.00		94.00		104.00		101.00		92.00		82.00		55.00	a	52.00		104.00	b
1957	40.00		51.00		59.00	a	77.00		84.00		95.00		99.00		99.00		96.00		89.00		53.00		53.00		99.00	a
1958	41.00		60.00		57.00		69.00		95.00		96.00		101.00		102.00		97.00	a	85.00		62.00		48.00		102.00	a
1959	52.00		56.00		63.00		79.00		93.00		100.00		106.00		98.00		96.00		74.00		56.00		45.00		106.00
1960	47.00		48.00		73.00		79.00		87.00		96.00		109.00		101.00		92.00	a	84.00		61.00	a	54.00		109.00	b
1961	49.00		59.00		63.00		73.00		96.00	a	105.00		103.00		109.00		88.00		82.00	a	50.00		51.00		109.00	b
1962	52.00		48.00		63.00		81.00		76.00		98.00		100.00		100.00		93.00		84.00		64.00		53.00		100.00
1963	45.00		60.00		67.00		77.00		85.00		90.00		97.00		100.00		97.00		88.00		62.00		43.00		100.00
1964	48.00		42.00		61.00		74.00		88.00		93.00		100.00		99.00		84.00		81.00		64.00		59.00	a	100.00	a
1965	52.00		53.00		67.00		73.00		84.00		91.00		97.00		100.00	d	82.00		86.00		70.00		52.00		100.00	d
1966	48.00		50.00		76.00		79.00		93.00		96.00		98.00		103.00		96.00		76.00		63.00		48.00		103.00
1967	48.00		59.00		62.00		62.00		88.00		92.00		103.00		101.00		98.00		75.00		67.00		49.00		103.00
1968	44.00		56.00		70.00		79.00		85.00		100.00		104.00		96.00		90.00		77.00		56.00		52.00		104.00
1969	50.00		46.00		73.00		81.00		88.00		96.00		99.00		103.00		94.00		73.00		67.00		55.00		103.00
1970	50.00	a	57.00		60.00		73.00		86.00		98.00		97.00		99.00		92.00		86.00		59.00		43.00		99.00	a
1971	47.00		53.00		61.00		67.00		81.00		95.00		100.00		102.00		94.00		80.00		55.00		50.00		102.00
1972	46.00		47.00		71.00		73.00		91.00		94.00		101.00		100.00		88.00		76.00		59.00		50.00		101.00
1973	50.00		56.00		67.00		72.00		87.00		95.00		104.00		101.00		96.00		82.00		58.00		50.00		104.00
1974	51.00		53.00		60.00		75.00		83.00		102.00		100.00		97.00		91.00		82.00		59.00		50.00		102.00
1975	44.00		44.00		53.00		64.00		87.00		87.00		104.00		96.00		92.00		86.00		68.00		45.00		104.00
1976	42.00		56.00		55.00		71.00		86.00		97.00		100.00		-----	z	95.00		81.00		62.00		47.00		-----	z
1977	43.00		62.00		66.00		88.00		80.00		100.00		100.00		101.00		93.00		77.00		58.00		52.00		101.00
1978	50.00		52.00		75.00		69.00		82.00		89.00	a	102.00		100.00		93.00		80.00		65.00		49.00		102.00	a
1979	42.00		50.00		63.00		73.00		88.00		98.00		103.00		100.00		97.00		86.00		59.00		50.00		103.00
1980	47.00		61.00		61.00		80.00		89.00		89.00		105.00		96.00		94.00		82.00		68.00		53.00		105.00
1981	48.00		60.00		61.00		75.00		81.00		96.00		101.00		100.00		97.00		73.00		62.00		57.00		101.00
1982	46.00		49.00		59.00		74.00		84.00		94.00		96.00		101.00		92.00		74.00		55.00		50.00		101.00
1983	51.00		61.00		65.00		70.00		93.00		90.00		103.00		107.00		95.00		75.00		66.00	b	43.00	a	107.00	c
1984	44.00		47.00		66.00		79.00		95.00		100.00		98.00		100.00		94.00		84.00		63.00	a	41.00		100.00	a
1985	38.00		49.00		59.00		84.00		87.00		98.00		103.00	s	98.00	j	80.00	g	73.00	i	69.00	f	46.00	b	-----	z
1986	49.00		62.00	d	77.00	g	82.00	d	95.00	b	99.00		100.00	b	103.00	a	92.00	b	74.00	c	59.00	k	45.00	e	-----	z
1987	44.00	c	54.00	e	64.00	a	92.00	b	92.00		98.00	d	101.00	j	100.00	l	100.00	i	85.00	j	70.00	k	58.00	o	-----	z
1988	47.00	k	60.00	j	71.00	h	83.00	i	91.00	i	103.00	d	103.00	k	103.00	h	95.00	j	85.00	k	73.00	f	45.00		-----	z
1989	41.00	a	45.00	d	63.00		82.00		90.00	b	95.00		106.00		99.00		90.00	a	80.00		57.00		48.00	b	106.00	j
1990	55.00	a	53.00	c	69.00		83.00		83.00	a	101.00	b	102.00		108.00		95.00		86.00		61.00		45.00	e	108.00	l
1991	45.00		59.00		69.00		70.00		77.00		90.00	a	100.00		103.00		93.00		82.00		56.00		47.00		103.00	a
1992	56.00	a	67.00		72.00		87.00		91.00		99.00		99.00		104.00		94.00		94.00		52.00		47.00		104.00	a
1993	44.00		50.00		67.00		69.00		89.00		97.00		100.00		96.00		93.00		84.00	c	62.00		57.00		100.00	c
1994	49.00		53.00	b	73.00		88.00		90.00		103.00	f	106.00		106.00		94.00	a	80.00		61.00	a	44.00	d	106.00	n
1995	50.00	f	65.00	b	58.00	g	72.00	a	84.00		95.00	a	108.00	a	100.00	c	94.00	b	80.00	e	61.00	b	59.00	n	-----	z
1996	49.00	j	53.00	f	64.00	h	83.00	f	84.00	f	95.00	b	104.00	g	103.00	d	-----	z	85.00	p	58.00	h	51.00	i	-----	z
1997	52.00	f	50.00	k	76.00	k	75.00	d	89.00	h	91.00	c	99.00	e	102.00	c	95.00		91.00	c	65.00	a	49.00		-----	z
1998	52.00	d	56.00		67.00	c	83.00	a	85.00	c	86.00	c	102.00	c	105.00	f	103.00	f	83.00	f	59.00	b	54.00	e	-----	z
1999	46.00	h	51.00		74.00	a	84.00	a	94.00		96.00	f	101.00	a	100.00	a	91.00		84.00	b	72.00	a	59.00	e	-----	z
2000	53.00	i	59.00	f	66.00	a	86.00	b	84.00	f	93.00	c	102.00	b	105.00	h	99.00	b	76.00	l	52.00	h	41.00	f	-----	z
2001	46.00	p	54.00	l	70.00	e	80.00	f	96.00	e	100.00	d	106.00		103.00	a	95.00	b	87.00	a	65.00	b	43.00	d	-----	z
2002	39.00	i	49.00	a	66.00	i	73.00	e	89.00	h	99.00	d	106.00	g	95.00	e	92.00	i	76.00	e	64.00	f	57.00	b	-----	z
2003	49.00	c	57.00	h	68.00	j	77.00		98.00		95.00	e	105.00		100.00		96.00	a	88.00		59.00		52.00		-----	z
2004	44.00	g	56.00		72.00	b	78.00	e	87.00	c	98.00	b	102.00	b	100.00	b	97.00		80.00	a	54.00	l	45.00	m	-----	z
2005	48.00	d	54.00	a	69.00		72.00	b	85.00	c	95.00	d	105.00	f	104.00	d	94.00	f	82.00	a	62.00	d	44.00	c	-----	z
2006	49.00	b	55.00	b	58.00	b	76.00	h	94.00	g	97.00	g	104.00	b	102.00	d	94.00	b	82.00		70.00	g	48.00	c	-----	z
2007	44.00	f	56.00	d	71.00	g	78.00	h	109.00		98.00	a	108.00	b	104.00		102.00		81.00		61.00	a	49.00		-----	z
2008	47.00		49.00		55.00	b	78.00		91.00		101.00	a	100.00		102.00		92.00		89.00		70.00	b	58.00	h	102.00	m
2009	49.00		55.00	a	65.00		84.00		91.00		93.00		102.00		101.00	a	101.00		75.00		71.00		43.00		102.00	b
2010	47.00		51.00		64.00		81.00		83.00		99.00		103.00		102.00	a	95.00		93.00		66.00	b	48.00	b	103.00	e
2011	50.00	c	59.00		57.00		68.00		98.00		93.00		102.00		105.00		96.00		89.00		56.00		53.00		105.00	c
2012	47.00		51.00		71.00		86.00	a	89.00		93.00		105.00		105.00		93.00		81.00		67.00		59.00		105.00	a
2013	46.00		58.00		68.00		75.00	a	92.00	c	104.00		111.00		101.00		95.00		77.00		59.00		54.00		111.00	d
2014	48.00		61.00		69.00		77.00		85.00		92.00		106.00		102.00		95.00		82.00		67.00		59.00		106.00
2015	48.00		61.00		78.00		79.00		85.00		104.00	a	103.00		103.00		95.00		90.00		60.00	a	49.00		104.00	b
2016	47.00	a	63.00		68.00		82.00		84.00		101.00		102.00	a	99.00		96.00		84.00		64.00		41.00		102.00	b
2017	41.00	g	52.00	a	67.00	a	68.00		90.00	a	96.00	a	104.00	b	103.00		100.00	a	75.00		60.00		52.00	k	104.00	y
Period of Record Statistics
MEAN	46.73		52.96		65.14		77.60		88.25		95.96		102.58		101.28		94.55		81.59		61.08		49.44		102.92
S.D.	4.38		5.48		5.99		6.11		5.20		4.31		3.10		2.95		3.75		5.37		5.23		4.76		2.71
SKEW	-0.54		0.14		0.03		-0.21		0.58		0.04		0.55		0.21		-0.25		-0.36		-0.08		0.34		0.84
MAX	56.00		67.00		81.00		92.00		109.00		108.00		112.00		109.00		105.00		94.00		72.00		62.00		111.00
MIN	32.00		41.00		53.00		62.00		76.00		86.00		96.00		95.00		82.00		65.00		47.00		40.00		99.00
YRS	90		99		95		101		99		101		98		100		97		95		93		94		52