LOWER GRANITE DAM, WASHINGTON

Monthly Total Heating Degree Days

(454835)

Base Temperature = 65 F

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 197510
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.
Months with 5 missing days or less use mean for missing day(s)
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
1965	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	0.00	z	801.23	e	801.23
1966	639.00	f	645.83	e	548.46	e	0.00	z	107.50	i	0.00	z	0.00	g	4.50		14.00		0.00	z	533.79	a	657.50		2404.08
1967	656.17	a	583.00		618.00		487.50		216.50		23.00		0.00		0.00		14.00		240.00		630.00		868.00		4336.17
1968	803.50		583.00		423.50		411.00		135.00		28.50		0.00		14.00		58.50		339.00		605.50		908.50		4310.00
1969	1231.50		728.50		554.50		344.00		128.00		16.50		0.00		4.50		36.50		361.50		577.50		837.50		4820.50
1970	906.50		560.50		592.50		472.50		147.00		41.00		0.00	a	0.00	h	77.00	i	353.63	d	604.04	d	578.50	j	3677.67
1971	506.00	l	428.50	h	482.00	i	233.00	i	89.50	k	61.00	i	40.50		0.00		103.00		373.03	a	518.50	f	532.50	l	516.53
1972	0.00	z	750.00		491.87	a	433.50		151.50		31.50		4.28	b	0.00		130.50		282.00		566.50		989.79	c	3831.43
1973	970.09	b	648.85	b	551.05	b	368.00		171.00		66.50		3.50		1.50		58.00		297.00		687.00		706.50		4528.98
1974	937.75	c	578.50		567.00		347.50		216.00		32.00		7.00		0.00		27.00		214.50		537.86	b	699.50		4164.61
1975	846.00		744.00		650.00		482.50		222.68	a	63.00		4.00		6.31	d	20.50		294.50		0.00	z	0.00	z	3333.50


Period of Record Statistics
MEAN	907.36		646.91		555.21		418.31		173.46		37.75		6.59		3.42		51.33		306.13		592.77		808.56		4432.05
S.D.	176.81		76.67		66.97		59.99		39.31		18.13		12.97		4.65		41.21		55.28		50.67		114.88		252.93
SKEW	0.56		0.31		-0.61		-0.10		0.24		0.66		2.30		1.37		0.92		-0.36		0.59		0.14		0.65
MAX	1231.50		750.00		650.00		487.50		222.68		66.50		40.50		14.00		130.50		373.03		687.00		989.79		4820.50
MIN	656.17		560.50		423.50		344.00		128.00		16.50		0.00		0.00		14.00		214.50		533.79		657.50		4164.61
NO YRS	7		9		9		8		8		8		9		9		9		9		8		8		5