SEATTLE CITY OFFICE,

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(457488)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197210
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
1948	-----	z	-----	z	-----	z	-----	z	-----	z	89.00	86.00		80.00	a	83.00	72.00		54.00		49.00		89.00
1949	51.00		65.00		62.00		73.00		81.00		85.00	87.00		89.00		86.00	65.00		70.00		57.00		89.00
1950	52.00		59.00		57.00		75.00		77.00		85.00	86.00		90.00		82.00	72.00		68.00		60.00		90.00
1951	57.00		59.00		61.00		81.00		78.00		93.00	96.00		87.00		89.00	76.00		58.00		50.00		96.00
1952	58.00		63.00		61.00		75.00		83.00		78.00	90.00		93.00		89.00	78.00		66.00		62.00		93.00
1953	56.00		54.00		65.00		66.00		89.00		74.00	86.00		88.00		86.00	76.00		64.00		53.00		89.00
1954	56.00		64.00		61.00		71.00		78.00		75.00	82.00		78.00		75.00	73.00		65.00		57.00		82.00
1955	54.00		52.00		60.00		70.00		72.00		100.00	82.00		86.00		86.00	69.00		60.00		56.00		100.00
1956	54.00		49.00		63.00		74.00		88.00		79.00	94.00		87.00		83.00	72.00		61.00		56.00		94.00
1957	50.00		58.00		62.00		77.00		82.00		77.00	80.00		80.00		85.00	72.00	a	61.00		61.00		85.00
1958	57.00		63.00		61.00		76.00		87.00		89.00	98.00		88.00		84.00	73.00		61.00		59.00		98.00
1959	53.00		57.00		59.00		78.00		87.00		86.00	94.00		82.00		78.00	67.00		60.00		56.00		94.00
1960	63.00		57.00		67.00		72.00		80.00		80.00	93.00		97.00		82.00	70.00		63.00		58.00		97.00
1961	61.00		56.00		61.00		66.00		88.00		86.00	96.00		92.00		88.00	76.00		61.00		54.00		96.00
1962	54.00		63.00		70.00		81.00		69.00		84.00	90.00		89.00		82.00	73.00		60.00		56.00		90.00
1963	52.00		69.00		63.00		70.00		92.00		86.00	77.00		85.00		88.00	77.00		60.00		58.00		92.00
1964	54.00		56.00		73.00		67.00		86.00		81.00	-----	z	86.00		78.00	76.00		57.00		54.00		86.00
1965	53.00		58.00		74.00		78.00		76.00		86.00	94.00		87.00		78.00	75.00		64.00		60.00		94.00
1966	-----	z	64.00		74.00		80.00		78.00		85.00	85.00		88.00		81.00	76.00		61.00		57.00		88.00
1967	57.00		60.00		58.00		66.00		82.00		90.00	86.00		94.00		92.00	72.00		64.00		55.00		94.00
1968	59.00		74.00		67.00		73.00		79.00		82.00	91.00		87.00		83.00	73.00		61.00		55.00		91.00
1969	54.00		56.00		69.00		70.00		90.00		92.00	87.00		85.00		81.00	76.00		64.00		56.00		92.00
1970	56.00		68.00		65.00		66.00		83.00		92.00	90.00		85.00		84.00	76.00		73.00		52.00		92.00
1971	56.00		56.00		59.00		79.00		87.00		80.00	94.00		92.00		78.00	71.00		56.00		51.00		94.00
1972	52.00		58.00		66.00		76.00		90.00		78.00	89.00		91.00		85.00	69.00		-----	z	-----	z	91.00


Period of Record Statistics
MEAN	55.17		59.92		64.08		73.33		82.58		84.48	88.88		87.44		83.44	73.00		62.17		55.92		92.48
S.D.	3.17		5.68		4.99		4.97		5.99		6.25	5.46		4.49		4.13	3.28		4.30		3.35		4.18
SKEW	0.64		0.51		0.70		-0.10		-0.41		0.39	-0.30		-0.13		-0.04	-0.61		0.57		-0.25		-0.63
MAX	63.00		74.00		74.00		81.00		92.00		100.00	98.00		97.00		92.00	78.00		73.00		62.00		100.00
MIN	50.00		49.00		57.00		66.00		69.00		74.00	77.00		78.00		75.00	65.00		54.00		49.00		82.00
NO YRS	23		24		24		24		24		25	24		25		25	25		24		24		21