COULEE DAM 1 SW, WA

Maximum of Maximum Temperature (Degrees Fahrenheit)

(451767)

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
1934	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	104.00	h	99.00		87.00	a	63.00	b	50.00	k	-----	z
1935	52.00	a	58.00		62.00	l	-----	z	-----	z	94.00	i	108.00		102.00		100.00		90.00		53.00	a	45.00		-----	z
1936	49.00		52.00		67.00	a	92.00		99.00	b	102.00	b	108.00		102.00	m	90.00	c	86.00		56.00		58.00		108.00	u
1937	30.00	a	44.00		65.00		74.00		90.00		99.00		106.00	a	99.00	a	98.00	a	76.00	a	61.00	d	54.00	e	106.00	n
1938	47.00	a	47.00		61.00	a	82.00		94.00	a	105.00		109.00	a	103.00	a	104.00		82.00	a	57.00		49.00	d	109.00	j
1939	51.00		48.00		74.00		87.00	b	96.00		101.00		113.00		106.00		96.00	a	81.00		60.00	a	58.00		113.00	d
1940	42.00		58.00		72.00	a	75.00		95.00		100.00		104.00		100.00		99.00		80.00		55.00		52.00		104.00	a
1941	45.00		52.00		74.00		84.00		92.00		94.00		109.00		100.00		83.00		74.00		62.00		58.00		109.00
1942	49.00	a	49.00		74.00		84.00		83.00		86.00		96.00		103.00	a	91.00		82.00		55.00	a	45.00		103.00	c
1943	47.00		-----	z	60.00		80.00		81.00		90.00		99.00		94.00		94.00		83.00		57.00		52.00		-----	z
1944	46.00		49.00		69.00		82.00		89.00		99.00		102.00		94.00		97.00		78.00		54.00		52.00		102.00
1945	54.00		54.00		69.00		76.00		89.00		99.00		103.00		105.00		91.00	a	81.00	a	61.00		56.00		105.00	b
1946	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1947	49.00		60.00		72.00		86.00		92.00		90.00		100.00		95.00		87.00		79.00	a	53.00		45.00		100.00	a
1948	43.00		53.00		65.00		71.00		85.00		94.00		91.00		90.00		92.00		69.00		53.00		53.00		94.00
1949	38.00		56.00		60.00		78.00		91.00		95.00		99.00		98.00		95.00	a	67.00		61.00		48.00		99.00	a
1950	43.00		46.00		56.00		72.00	f	80.00		92.00		99.00		-----	z	96.00	d	68.00	a	52.00		48.00		-----	z
1951	46.00		53.00		57.00		74.00		88.00		89.00		100.00		97.00	a	88.00		73.00		53.00		51.00		100.00	a
1952	40.00		49.00		64.00		84.00		86.00		91.00		99.00		98.00	a	94.00		83.00		54.00		45.00		99.00	a
1953	53.00		53.00		63.00		72.00		82.00		83.00		96.00		99.00		92.00		75.00		62.00		48.00		99.00
1954	51.00		55.00		60.00		74.00		89.00		84.00		95.00		95.00		85.00		69.00		57.00		47.00		95.00
1955	39.00		45.00		52.00		67.00		78.00	a	97.00		102.00		95.00		96.00		67.00		59.00		43.00		102.00	a
1956	45.00		44.00		57.00		81.00		91.00		86.00		101.00		99.00	a	88.00		76.00		52.00		53.00	a	101.00	b
1957	35.00		56.00		58.00		84.00		88.00		91.00		93.00		92.00		91.00		72.00		54.00		50.00	a	93.00	a
1958	49.00		58.00		60.00		72.00	a	95.00		100.00		100.00		99.00		93.00		81.00		58.00		53.00		100.00	a
1959	50.00		45.00		59.00		71.00		85.00		90.00		102.00		98.00		89.00		67.00		61.00		54.00		102.00
1960	45.00		47.00		71.00		76.00		82.00		90.00		108.00		100.00		91.00		77.00		58.00		44.00		108.00
1961	50.00		57.00		65.00		69.00		88.00		100.00		101.00		110.00		84.00		77.00		52.00		47.00		110.00
1962	45.00		54.00		66.00		80.00		76.00		94.00		101.00		96.00		90.00		77.00		58.00		46.00		101.00
1963	46.00		55.00		63.00		69.00		87.00		97.00		93.00		97.00		94.00		81.00		55.00		43.00		97.00
1964	43.00		48.00		68.00		67.00		83.00		89.00		101.00		92.00		85.00		75.00		55.00		42.00		101.00
1965	44.00		47.00		61.00		76.00		86.00		90.00		100.00		100.00		84.00		78.00		63.00		47.00		100.00
1966	43.00		49.00		72.00		73.00		93.00		88.00		96.00		103.00		93.00		75.00		59.00		48.00		103.00
1967	53.00		57.00		56.00		64.00		85.00		95.00		100.00		103.00		93.00		74.00		54.00		47.00		103.00
1968	48.00		58.00		66.00		82.00		84.00		94.00		105.00		98.00	a	88.00		71.00		53.00		54.00		105.00	a
1969	42.00		41.00		67.00		77.00		87.00		98.00		98.00		99.00		92.00		66.00	a	56.00		48.00		99.00	a
1970	48.00		49.00		58.00		62.00		85.00		97.00		98.00		100.00		92.00	a	80.00		53.00		47.00		100.00	a
1971	57.00		53.00		59.00		70.00		86.00		92.00		100.00		104.00		83.00		78.00		52.00		44.00		104.00
1972	48.00		60.00		68.00		74.00		90.00		91.00		96.00		103.00		87.00		75.00		51.00		55.00		103.00
1973	45.00		52.00		62.00		73.00		94.00		102.00		99.00		97.00		94.00		69.00		53.00		48.00		102.00
1974	49.00		50.00		62.00		70.00		77.00		97.00		100.00		98.00		94.00		74.00		54.00		50.00	c	100.00	c
1975	44.00		45.00	a	52.00		73.00		83.00		87.00		105.00		92.00		88.00		80.00		68.00		55.00	a	105.00	b
1976	50.00	a	50.00		62.00		71.00		82.00		92.00		96.00		90.00		93.00		82.00		57.00		45.00	b	96.00	c
1977	42.00	a	59.00		63.00		91.00		81.00		94.00		96.00		103.00		83.00		69.00		60.00		50.00		103.00	a
1978	42.00		47.00		66.00		72.00		80.00	b	94.00	a	97.00	a	100.00	b	85.00	a	72.00		57.00	a	43.00	h	100.00	p
1979	35.00		52.00		68.00		77.00		86.00		96.00		105.00		96.00		90.00		80.00		55.00		49.00	a	105.00	a
1980	45.00		47.00	a	60.00		81.00		86.00	a	87.00		100.00		92.00		88.00		83.00	a	60.00		58.00		100.00	c
1981	50.00	b	59.00	a	65.00		85.00		82.00		88.00		96.00		101.00		95.00		68.00		62.00		48.00		101.00	c
1982	45.00	a	59.00	b	62.00	a	74.00	a	84.00	e	96.00	b	100.00	b	97.00	a	88.00	b	70.00		52.00	a	53.00	c	100.00	u
1983	50.00	a	54.00	c	59.00	c	73.00		97.00	b	86.00	i	97.00	d	97.00	c	84.00	b	69.00	c	59.00	a	43.00	c	-----	z
1984	48.00	a	49.00	a	66.00		74.00	f	86.00	d	89.00	b	103.00	a	99.00		89.00		79.00	a	56.00		40.00	b	103.00	r
1985	37.00	a	47.00		57.00	a	77.00	c	90.00	d	96.00	b	107.00	d	92.00	d	86.00	e	71.00	c	59.00	c	40.00	a	-----	z
1986	44.00	a	55.00	c	66.00	b	74.00	c	100.00	c	100.00	e	96.00	b	100.00	f	85.00	h	73.00	a	55.00	b	42.00		-----	z
1987	44.00		50.00	e	67.00	b	85.00	a	95.00	a	98.00	c	-----	z	-----	z	98.00	b	82.00		57.00	b	53.00	b	-----	z
1988	43.00	c	60.00	c	61.00	a	82.00	d	89.00	c	94.00	c	98.00	d	102.00	f	103.00	a	84.00	b	61.00	a	46.00		-----	z
1989	51.00	a	43.00	b	57.00	a	74.00		80.00	b	92.00	c	96.00	a	100.00	a	85.00	b	74.00	c	69.00	b	42.00		100.00	r
1990	51.00	a	57.00	a	68.00		73.00	c	85.00	a	89.00		101.00		99.00	a	91.00		72.00	c	64.00		51.00	a	101.00	k
1991	44.00		56.00		69.00	a	76.00	b	74.00		83.00	d	97.00	d	97.00		89.00	a	81.00	c	54.00	b	49.00	c	97.00	t
1992	52.00	b	54.00		71.00	b	76.00	b	90.00	a	102.00	b	99.00		99.00		85.00		83.00	a	52.00	b	39.00		102.00	l
1993	40.00		42.00		58.00		66.00	a	-----	z	88.00		89.00	a	92.00		90.00	a	81.00	a	58.00	a	48.00	a	-----	z
1994	46.00		50.00		73.00		80.00	b	86.00	b	93.00	b	104.00	c	99.00	b	88.00	a	74.00	b	48.00	a	52.00	a	104.00	p
1995	46.00		61.00		67.00	b	70.00		87.00		88.00	a	97.00	a	93.00		93.00		67.00		61.00		50.00		97.00	d
1996	46.00	b	49.00		61.00		76.00	b	77.00	b	88.00	a	100.00	b	99.00	a	91.00		76.00	b	52.00		42.00		100.00	l
1997	46.00	a	46.00		64.00	a	67.00		85.00		87.00	b	92.00	a	99.00	a	91.00		71.00	a	58.00		48.00		99.00	g
1998	-----	z	52.00		65.00	a	83.00		85.00	a	-----	z	103.00		104.00	a	97.00	a	79.00		59.00	a	50.00	a	-----	z
1999	52.00	a	51.00		70.00	a	76.00		89.00	b	94.00		98.00		99.00	b	86.00		71.00	a	62.00		50.00		99.00	g
2000	43.00		51.00		62.00	a	73.00		80.00		90.00	c	100.00	a	100.00	a	90.00	b	71.00	a	53.00		34.00	b	100.00	k
2001	43.00		42.00		64.00	a	77.00		94.00		91.00	a	98.00	a	100.00	a	90.00		73.00	a	59.00		46.00		100.00	e
2002	51.00	a	56.00	a	60.00	a	70.00		77.00	a	96.00	a	103.00	b	98.00	a	89.00	a	75.00	c	54.00		53.00	a	103.00	m
2003	53.00	a	53.00		65.00	a	73.00	b	89.00	c	94.00	d	104.00	a	102.00	e	97.00		84.00	b	61.00		43.00	b	104.00	u
2004	48.00	f	51.00	a	70.00	b	80.00	e	81.00	a	100.00	b	102.00		104.00	b	84.00	c	79.00	a	58.00	a	54.00	b	-----	z
2005	50.00	a	57.00		66.00		78.00	a	93.00		100.00	b	100.00	k	99.00	b	88.00	a	74.00	f	56.00	e	44.00		-----	z
2006	50.00	b	52.00	a	62.00	a	76.00	b	92.00		98.00	a	107.00	c	97.00		95.00	b	77.00		63.00	a	47.00	b	107.00	o
2007	46.00		51.00		66.00	a	71.00	a	86.00		94.00	b	101.00		96.00		86.00		75.00	b	58.00		58.00		101.00	f
2008	43.00	b	51.00		54.00		72.00	a	92.00	c	100.00	a	95.00	c	104.00	a	88.00	a	84.00		57.00	b	45.00	a	104.00	o
2009	46.00		47.00		59.00	a	79.00	a	91.00		88.00		97.00	a	103.00		93.00		64.00	a	55.00		40.00		103.00	d
2010	47.00	b	51.00	a	63.00		74.00	a	80.00		84.00	a	98.00		94.00	a	83.00		81.00		60.00		42.00	b	98.00	h
2011	50.00		53.00		65.00		65.00		77.00		87.00		91.00		95.00		95.00		76.00		56.00		51.00		95.00
2012	45.00		49.00		62.00		83.00		88.00		84.00		98.00		97.00		87.00	a	76.00	a	61.00		51.00		98.00	b
2013	44.00		46.00		69.00		77.00		89.00		90.00		101.00		96.00		94.00		70.00		56.00		39.00		101.00
2014	53.00		50.00		60.00		72.00		82.00		86.00		101.00		99.00		87.00		84.00		57.00		55.00		101.00
2015	45.00		55.00		66.00	a	77.00		87.00	a	105.00		101.00		100.00		89.00		78.00		59.00		53.00		105.00	b
2016	43.00		57.00		68.00		83.00		83.00		97.00		98.00		95.00		83.00		68.00		60.00		42.00		98.00
2017	40.00		44.00		58.00		63.00		87.00	a	92.00		98.00		98.00		94.00		67.00		55.00	a	40.00		98.00	b
2018	49.00		57.00		62.00		82.00		85.00		86.00		99.00		103.00		86.00		68.00		64.00		49.00		103.00
2019	45.00		35.00		62.00		69.00		89.00		92.00		93.00		99.00		88.00		67.00		54.00		49.00		99.00
2020	50.00		56.00		61.00		72.00		87.00		93.00		102.00		102.00		92.00		79.00		60.00		49.00		102.00
2021	50.00		51.00		61.00		78.00		85.00		112.00		107.00		104.00		87.00		71.00		63.00	c	66.00		112.00	c
2022	38.00	a	47.00		67.00		65.00		72.00		92.00	a	106.00		103.00	c	95.00		80.00	a	55.00	a	44.00		106.00	g
2023	49.00		51.00		58.00	a	81.00		89.00	a	91.00		96.00		103.00	b	86.00	a	78.00	a	53.00	b	49.00		103.00	h
2024	44.00		51.00	b	70.00	a	79.00	h	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	46.08		51.35		63.74		75.69		86.45		93.27		99.98		98.69		90.61		75.78		57.20		48.43		101.50
S.D.	4.70		5.13		5.07		6.25		5.64		5.67		4.50		3.90		4.77		5.76		3.95		5.43		4.14
SKEW	-0.58		-0.32		0.02		0.18		-0.07		0.46		0.27		-0.04		0.42		0.01		0.43		0.20		0.59
MAX	57.00		61.00		74.00		92.00		100.00		112.00		113.00		110.00		104.00		90.00		69.00		66.00		113.00
MIN	30.00		35.00		52.00		62.00		72.00		83.00		89.00		90.00		83.00		64.00		48.00		34.00		93.00
YRS	87		88		88		85		86		85		86		83		88		88		89		87		52