HEADWORKS PORTLAND WTR B, OR

Maximum of Maximum Temperature (Degrees Fahrenheit)

(353770)

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
1899	-----	z	-----	z	-----	z	68.00		66.00		78.00		92.00		77.00	a	82.00		66.00		57.00	c	50.00	d	-----	z
1900	52.00	a	49.00	c	67.00	a	75.00	a	72.00	a	87.00	a	88.00		72.00		76.00		64.00	a	55.00	b	53.00	e	88.00	p
1901	47.00		67.00	c	62.00	g	65.00		75.00	a	84.00		79.00		87.00		-----	z	67.00	a	59.00	b	51.00	d	-----	z
1902	50.00	c	53.00		71.00	c	-----	z	-----	z	81.00		89.00		92.00		81.00	a	69.00		50.00	b	57.00	e	-----	z
1903	51.00	b	52.00	a	-----	z	-----	z	-----	z	92.00		84.00		78.00		80.00		-----	z	-----	z	48.00	a	-----	z
1904	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	50.00	e	-----	z
1905	-----	z	-----	z	-----	z	80.00		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1906	-----	z	-----	z	-----	z	-----	z	85.00		93.00		105.00		95.00		84.00		82.00		66.00		57.00		-----	z
1907	49.00		60.00	f	66.00		76.00		90.00		92.00		102.00		90.00		96.00		79.00		65.00		56.00	a	102.00	g
1908	55.00		62.00		65.00		81.00		75.00		92.00		95.00		99.00		87.00		78.00		64.00		52.00		99.00
1909	50.00		51.00		70.00		77.00		86.00		90.00		85.00		87.00		90.00		76.00		59.00		48.00		90.00
1910	52.00		50.00		75.00		87.00		86.00		98.00	a	100.00		92.00		86.00		70.00	b	69.00	b	58.00		100.00	e
1911	54.00	a	55.00	a	79.00	b	80.00	a	83.00	a	85.00	b	104.00		94.00		80.00		77.00		58.00		47.00		104.00	h
1912	50.00	b	59.00		69.00		69.00		92.00		94.00		99.00		82.00	a	87.00		76.00	d	60.00	a	58.00		99.00	h
1913	53.00	a	57.00		74.00		75.00	b	-----	z	94.00		95.00		96.00		88.00		77.00		68.00	a	52.00		-----	z
1914	54.00		57.00		73.00		71.00	b	88.00	b	91.00	c	95.00		97.00		87.00		78.00		62.00	a	50.00		97.00	h
1915	55.00		57.00		79.00		80.00		82.00		95.00		99.00		100.00		87.00		78.00		58.00		50.00		100.00
1916	49.00		62.00		71.00		73.00		79.00		91.00		88.00		98.00		87.00		75.00		57.00		49.00		98.00
1917	49.00	a	59.00		61.00		65.00	a	74.00		90.00		103.00		96.00		85.00	a	84.00		65.00		60.00		103.00	c
1918	56.00		59.00		77.00		82.00	a	79.00		94.00		92.00		97.00		97.00		76.00		58.00		58.00		97.00	a
1919	57.00		50.00		73.00		74.00		82.00		81.00		105.00	a	97.00		86.00		77.00		59.00		51.00		105.00	a
1920	57.00		63.00		65.00		75.00		84.00		95.00		95.00		101.00		82.00		-----	z	65.00		56.00		-----	z
1921	52.00		66.00		70.00		74.00	a	84.00		83.00		88.00		93.00		80.00	a	83.00		67.00		58.00	a	93.00	c
1922	45.00		60.00		64.00	a	73.00		95.00		96.00		105.00		97.00		96.00		78.00		56.00		46.00	a	105.00	b
1923	52.00	a	62.00		82.00		84.00		85.00	a	100.00		91.00		98.00		95.00		89.00	a	67.00		55.00		100.00	c
1924	54.00		60.00	a	62.00		82.00		90.00		99.00		103.00		90.00	a	97.00		73.00	a	54.00		55.00	a	103.00	d
1925	54.00		58.00		66.00		83.00		90.00	a	100.00		93.00		101.00		89.00		78.00		59.00	a	56.00		101.00	b
1926	54.00		67.00		77.00		93.00	a	87.00	c	94.00	a	103.00	a	92.00		90.00	a	78.00	b	68.00		61.00		103.00	i
1927	55.00	a	56.00		68.00		81.00	a	83.00		92.00		106.00	a	99.00		79.00		75.00	d	66.00	a	53.00	b	106.00	j
1928	48.00		61.00	c	70.00		75.00	a	95.00	e	81.00	b	97.00	e	91.00	f	89.00		74.00		62.00	a	55.00	a	97.00	x
1929	50.00	a	49.00		67.00		75.00		95.00		92.00		98.00		97.00		93.00		78.00		67.00		56.00		98.00	a
1930	48.00	a	63.00		84.00		82.00		80.00	b	100.00		98.00		97.00	a	99.00	a	70.00		70.00	a	53.00		100.00	f
1931	59.00		60.00	a	70.00		87.00		94.00		92.00		102.00		96.00		88.00		78.00		68.00		49.00		102.00	a
1932	55.00		67.00		70.00		74.00		79.00		94.00		85.00		98.00		94.00		87.00		60.00		54.00		98.00
1933	53.00		48.00		62.00	a	77.00		79.00	a	87.00		99.00		101.00		79.00		84.00		63.00		58.00		101.00	b
1934	57.00		63.00		77.00		85.00		90.00		85.00		87.00		95.00		94.00		84.00	b	66.00		57.00		95.00	b
1935	57.00	a	61.00		62.00	a	73.00		81.00		98.00		110.00		101.00		94.00		84.00	a	56.00		54.00		110.00	c
1936	52.00	a	55.00		69.00		85.00		93.00	a	85.00		85.00		91.00		89.00	a	85.00		66.00		58.00		93.00	c
1937	41.00		54.00		64.00		65.00		80.00		95.00		91.00		96.00		99.00		81.00		62.00		58.00		99.00
1938	53.00		62.00		66.00		75.00		88.00		92.00		105.00		85.00		96.00		86.00		56.00	a	55.00		105.00	a
1939	52.00		57.00		75.00		85.00		97.00		82.00		100.00		107.00		89.00		76.00		66.00		53.00		107.00
1940	61.00	a	58.00		72.00		80.00		94.00		95.00		88.00		96.00		87.00		79.00		57.00		60.00		96.00	a
1941	58.00		61.00		78.00		78.00		90.00		95.00		108.00		99.00		77.00		71.00		69.00		57.00		108.00
1942	59.00		55.00		76.00		79.00		85.00		101.00		105.00		96.00		93.00		81.00		59.00		52.00		105.00
1943	53.00		64.00		67.00		81.00		81.00		89.00		90.00	a	88.00		92.00		81.00		62.00		55.00		92.00	a
1944	55.00		54.00		70.00		81.00		94.00		87.00		101.00		95.00		103.00		77.00		57.00		55.00		103.00
1945	55.00		61.00		59.00		72.00		88.00		92.00		100.00		99.00		91.00		83.00		61.00		60.00		100.00
1946	50.00		63.00		67.00		80.00		85.00		91.00		104.00		95.00		84.00		68.00		55.00		56.00		104.00
1947	51.00		63.00		81.00		84.00		92.00		82.00	a	85.00		86.00		88.00	a	66.00		60.00		53.00		92.00	b
1948	51.00		64.00		74.00		72.00		87.00		93.00		92.00		82.00		92.00		72.00		51.00		49.00		93.00
1949	40.00		58.00		60.00	a	77.00		85.00		87.00		92.00		90.00	a	94.00		65.00		79.00		56.00		94.00	b
1950	44.00		54.00		59.00		79.00		86.00		90.00		92.00		95.00		90.00		72.00		62.00		57.00		95.00
1951	50.00		58.00		65.00	a	81.00		86.00	a	96.00		93.00	a	102.00		92.00		79.00		57.00		51.00	a	102.00	d
1952	54.00		59.00	a	69.00		79.00		87.00		80.00		100.00		104.00		95.00		90.00		62.00		52.00		104.00	a
1953	60.00		56.00		73.00		71.00		87.00	a	74.00		92.00		98.00		92.00		80.00		60.00		54.00		98.00	a
1954	49.00		60.00		64.00		77.00		88.00	a	84.00		82.00	a	83.00	a	88.00		72.00	b	68.00		54.00	a	88.00	f
1955	52.00		58.00		62.00		74.00	a	79.00	a	92.00		88.00	c	88.00		97.00	a	76.00	a	62.00		55.00		97.00	g
1956	50.00	a	47.00		68.00	a	85.00	a	93.00		82.00		106.00	a	91.00		83.00		79.00		61.00		54.00		106.00	d
1957	45.00		60.00		64.00		89.00		83.00		82.00		87.00		88.00		99.00		76.00	a	63.00		58.00		99.00	a
1958	59.00		67.00	a	65.00		78.00		90.00		95.00		105.00		95.00		100.00		89.00		65.00		60.00		105.00	a
1959	54.00		61.00		69.00		74.00		85.00		89.00		96.00		91.00		86.00		79.00		68.00		57.00		96.00
1960	55.00		58.00		79.00		76.00		77.00		85.00		98.00		96.00		92.00		88.00		61.00		56.00		98.00
1961	60.00		60.00		64.00		69.00		85.00		104.00		101.00		99.00		82.00	a	84.00		60.00	a	56.00		104.00	b
1962	62.00		64.00		68.00		78.00	a	65.00		85.00		91.00	a	87.00		89.00		80.00		67.00	a	62.00		91.00	c
1963	54.00		64.00		69.00		73.00		88.00		91.00	a	84.00		89.00		93.00		75.00		57.00	a	60.00		93.00	b
1964	52.00		63.00		75.00		68.00		78.00		82.00		90.00		89.00		83.00		82.00	a	58.00		59.00		90.00	a
1965	59.00	a	64.00		71.00		79.00		78.00		87.00	a	100.00		92.00		83.00	a	83.00		64.00		58.00	a	100.00	d
1966	52.00		59.00		73.00	a	77.00		84.00	a	90.00		86.00	a	91.00		90.00		80.00		71.00		56.00		91.00	c
1967	53.00		60.00		63.00		64.00		84.00		87.00		96.00		98.00		92.00		76.00	a	63.00		51.00		98.00	a
1968	58.00		74.00		69.00		81.00		77.00		89.00		93.00		90.00		91.00		76.00		60.00		54.00		93.00
1969	52.00		52.00		74.00		71.00		88.00		85.00		85.00		83.00		91.00		73.00		68.00		54.00		91.00
1970	58.00		67.00		64.00		68.00		87.00		95.00		97.00		95.00		85.00		86.00		66.00		52.00		97.00
1971	60.00		66.00		63.00		78.00		87.00		84.00		94.00		95.00		82.00		84.00		59.00		52.00		95.00
1972	51.00		57.00		72.00		73.00	a	93.00		83.00		94.00		100.00		92.00		82.00		60.00		56.00		100.00	a
1973	55.00		65.00	a	67.00		72.00		89.00		92.00		95.00		86.00		92.00		72.00		55.00		52.00		95.00	a
1974	57.00		56.00		67.00		74.00		78.00		93.00		90.00		89.00		92.00		84.00		66.00		56.00		93.00
1975	57.00		60.00		59.00		70.00		86.00	a	87.00		92.00		83.00		92.00		84.00		69.00		60.00	a	92.00	b
1976	60.00		66.00		62.00		80.00		83.00		87.00		93.00		83.00	a	85.00		82.00		68.00		60.00		93.00	a
1977	61.00		72.00		64.00		79.00		71.00		88.00		90.00		105.00	a	86.00		75.00	a	61.00		63.00		105.00	b
1978	53.00	c	67.00		73.00		73.00		83.00		90.00		96.00		101.00		83.00		80.00		63.00		52.00		101.00	c
1979	46.00		55.00		72.00		80.00		84.00		88.00	b	99.00		85.00		96.00		85.00		64.00		55.00		99.00	b
1980	54.00		63.00	a	66.00		81.00	b	78.00		76.00		102.00		90.00		90.00	a	90.00		73.00		63.00	a	102.00	e
1981	62.00	a	63.00		70.00		85.00		80.00		85.00		90.00	b	102.00		99.00		76.00	a	70.00		57.00		102.00	d
1982	53.00		62.00		66.00	a	79.00	b	85.00	b	95.00		85.00	a	95.00	a	90.00	a	78.00	b	61.00	a	58.00		95.00	k
1983	59.00		62.00		63.00	a	78.00		99.00	c	84.00	a	89.00	b	90.00		84.00		72.00		61.00		50.00		99.00	g
1984	63.00		63.00		72.00		80.00		90.00		88.00		95.00		90.00		84.00	a	82.00		60.00	a	52.00		95.00	b
1985	57.00		62.00	a	68.00		80.00		82.00		98.00	a	98.00	a	91.00	a	80.00		77.00		59.00		51.00		98.00	d
1986	56.00		69.00		72.00		78.00	a	90.00		98.00		85.00	a	96.00		91.00		82.00	b	69.00		54.00		98.00	d
1987	54.00	e	65.00	d	76.00		85.00		94.00	a	96.00		92.00	a	103.00		-----	z	94.00		70.00		58.00		-----	z
1988	55.00		72.00		72.00		82.00	a	90.00	d	91.00	a	98.00		99.00		104.00	b	89.00		58.00	a	59.00		104.00	i
1989	53.00		54.00		66.00	b	82.00		80.00		93.00	b	85.00	b	85.00		92.00		77.00		62.00		59.00		93.00	f
1990	60.00		69.00		70.00	b	85.00	d	90.00	a	93.00	b	99.00	a	102.00		94.00		70.00	a	66.00		55.00		102.00	k
1991	59.00		69.00		76.00		74.00	a	75.00	a	82.00		98.00	a	90.00	a	94.00		94.00	a	68.00		59.00		98.00	e
1992	59.00		67.00		73.00		84.00		95.00	a	102.00		100.00		98.00	a	91.00	a	75.00		63.00		50.00	c	102.00	f
1993	59.00	a	65.00		64.00	a	71.00		89.00	b	86.00	a	85.00	a	96.00		91.00		92.00		63.00		59.00		96.00	f
1994	62.00		58.00		82.00		79.00		93.00	a	83.00		101.00		94.00	a	96.00		80.00	a	53.00		55.00		101.00	c
1995	58.00		69.00	a	74.00		77.00	a	86.00	a	96.00		97.00		90.00		88.00		75.00		67.00		58.00	b	97.00	e
1996	60.00		68.00	a	73.00		81.00	a	79.00		92.00		102.00		102.00		93.00		89.00		63.00	c	53.00		102.00	e
1997	54.00		65.00		67.00	a	75.00	b	88.00	a	-----	z	94.00	c	92.00	c	92.00	c	76.00	b	72.00	a	53.00		-----	z
1998	58.00	c	62.00		73.00		88.00		85.00		84.00	a	98.00		99.00		92.00		82.00		60.00		56.00	a	99.00	e
1999	56.00		54.00	a	71.00		80.00		87.00		87.00		92.00		92.00		94.00		84.00		65.00		60.00	a	94.00	b
2000	51.00		57.00		70.00	a	76.00		76.00		95.00		92.00	a	91.00		89.00		77.00	c	62.00	a	53.00	a	95.00	g
2001	57.00		60.00		70.00		78.00		96.00		85.00		86.00		96.00		83.00		81.00		65.00		51.00		96.00
2002	52.00		60.00		63.00		76.00		82.00	a	93.00		96.00		100.00		87.00		80.00		66.00		54.00		100.00	a
2003	56.00		61.00		72.00		79.00		87.00	a	97.00		95.00	b	95.00	c	97.00	a	77.00		59.00		51.00		97.00	g
2004	55.00		55.00		77.00		85.00		76.00	a	87.00		100.00		98.00		77.00		78.00		61.00	a	55.00		100.00	b
2005	61.00		66.00		75.00		72.00		94.00	b	81.00		93.00	a	92.00		81.00		70.00		59.00		57.00		94.00	c
2006	59.00		56.00	a	63.00	a	79.00	a	94.00		101.00	a	105.00		92.00	b	95.00		74.00	a	65.00	a	58.00		105.00	h
2007	56.00		60.00		70.00		78.00	b	85.00	f	85.00	f	97.00	l	94.00	g	89.00	c	66.00	c	64.00	a	50.00	m	-----	z
2008	51.00	b	62.00	a	63.00	e	79.00	e	90.00	h	97.00	f	92.00	g	98.00	f	88.00	d	72.00		62.00		54.00		-----	z
2009	54.00		63.00		56.00		77.00		83.00		84.00		101.00		92.00	a	91.00		70.00	a	63.00		50.00		101.00	b
2010	57.00	a	58.00	b	68.00		73.00		73.00		78.00		94.00		95.00		84.00		77.00		68.00		58.00		95.00	c
2011	54.00		52.00		54.00		68.00		70.00		80.00		83.00		93.00		91.00		71.00		57.00	b	54.00		93.00	b
2012	56.00		54.00		61.00		77.00		88.00		78.00		81.00		96.00		91.00	a	79.00		62.00		52.00		96.00	a
2013	49.00		61.00		75.00		74.00		79.00		89.00		87.00		87.00		96.00		78.00		59.00		52.00		96.00
2014	53.00		54.00		71.00		78.00		89.00		83.00	a	94.00		96.00		90.00		79.00		59.00		57.00		96.00	a
2015	61.00		62.00		69.00		80.00		79.00		91.00		101.00	a	96.00		92.00		81.00		57.00		59.00		101.00	a
2016	57.00		64.00		70.00		86.00		86.00		96.00		86.00		97.00		84.00		66.00		68.00		48.00		97.00
2017	50.00		56.00		57.00		67.00		85.00		101.00		91.00		102.00		94.00		70.00		58.00		52.00		102.00
2018	55.00		56.00		67.00		88.00		86.00		96.00		101.00		100.00		93.00		75.00		69.00	a	57.00		101.00	a
2019	53.00		51.00		69.00		72.00		85.00		80.00	b	88.00		100.00		93.00		67.00		63.00		57.00		100.00	b
2020	51.00		58.00		62.00		74.00		87.00		84.00		92.00		93.00		89.00		76.00		65.00		56.00		93.00
2021	56.00		51.00		68.00		80.00		80.00		106.00		90.00		96.00		84.00		66.00		61.00		57.00		106.00
2022	51.00		63.00		65.00		76.00		72.00		93.00		92.00		97.00		89.00		84.00		56.00		49.00		97.00
2023	52.00		55.00		64.00		83.00		85.00		89.00		96.00		101.00		91.00		81.00		60.00		53.00		101.00
2024	58.00		56.00	a	77.00		71.00	h	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	54.20		59.94		69.00		77.47		84.75		89.73		94.54		93.83		89.49		78.06		62.48		54.85		98.42
S.D.	4.38		5.44		5.81		5.58		6.66		6.44		6.75		6.13		5.64		6.40		4.87		3.59		4.66
SKEW	-0.47		-0.04		0.09		-0.09		-0.45		0.01		-0.00		-0.73		-0.13		0.06		0.20		-0.13		0.18
MAX	63.00		74.00		84.00		93.00		99.00		106.00		110.00		107.00		104.00		94.00		79.00		63.00		110.00
MIN	40.00		47.00		54.00		64.00		65.00		74.00		79.00		72.00		76.00		64.00		50.00		46.00		90.00
YRS	122		121		120		121		118		120		121		120		121		121		122		123		85