MCMILLIN RESERVOIR, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(455224)

File last updated on April 18, 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
1941	-----	z	-----	z	38.74		42.67		46.55		50.40		56.32		52.13		48.10		44.10		38.33		33.55		45.09	b
1942	29.37	a	31.96		33.06		40.13		44.16		46.83		54.65		54.94		46.97		43.16		35.53		36.33	a	41.42
1943	26.17	a	32.61		33.94		40.79	a	41.77		46.40		49.35		50.46	g	47.13		43.43	a	35.33		30.77		38.88	a
1944	30.97		32.03		33.16		38.40		41.13		46.63		49.81		50.35		48.67		45.03		36.07		28.84		40.09
1945	32.55		34.46		34.45		37.63		44.84		45.67		49.39		48.48		45.10		41.74		37.23		31.90		40.29
1946	33.35		34.43		35.06		37.73		43.06		46.63		50.81		49.65		47.20		39.16		32.47		32.61		40.18
1947	27.84		34.32		36.71		39.76	a	44.39		48.03		49.39		48.19		46.13		44.74		37.50		35.35		41.03
1948	30.48		30.93		33.65		36.47		43.42		49.30		49.32		52.48		44.70		39.32		35.37		29.32		39.56
1949	19.94		29.18		35.39		38.37		42.68		43.50		47.03		49.84		46.73		37.74		40.77		31.74		38.58
1950	18.10		31.71		34.65		36.03		39.39		47.17		48.39		50.13		44.23		41.81		35.83		38.29		38.81
1951	30.65		32.00		31.23		34.03		40.87		45.80		48.32		46.29		46.07		41.87		35.23		30.26		38.55
1952	28.58		32.59		33.68		36.30		41.29		45.00		47.68		50.29		45.20		41.58		31.13		32.77		38.84
1953	38.32		33.18		34.84		37.93		42.29		45.20		48.83	a	51.23		47.53		42.65		39.40		35.65		41.42
1954	29.58		34.29		29.26		35.93		41.84		45.50		47.58		50.65		48.34	a	38.81		40.37		32.19		39.53
1955	32.35		29.29		30.45		34.10		40.45		46.13		48.65		46.61		45.43		42.10		30.87		31.03		38.12
1956	30.35		27.97		32.90		36.00		43.39		47.30		50.26		49.97		46.33		41.26		33.47		32.10		39.27
1957	23.42		30.46		35.23		39.93		46.19		48.87		48.00		48.71		48.23		40.58		32.27		35.10		39.75
1958	34.23		38.07		32.23		37.77		45.71		52.90		53.10		50.13		47.43		41.61		35.40		36.63	a	42.10
1959	32.74		33.32		35.77		38.63		41.42		48.77		50.33	a	48.90		48.38	a	42.97		34.03		31.55		40.57
1960	30.45		32.25	a	34.00		39.20		43.13		46.23		48.58		51.65		46.00		43.55		34.77		31.19		40.08
1961	34.23		38.43		37.35		39.07		43.06		48.23		51.39		51.74		44.13		40.19		31.67		33.35		41.07
1962	29.74		32.64		33.13		39.40		42.35		44.67		48.61		51.23		47.37		43.42		38.17		34.87		40.47
1963	25.74		37.43		34.61		38.57		41.19		48.20		50.13		51.16		50.00		43.42		38.17		32.26		40.91
1964	34.39		30.93		34.61		36.20		39.90		47.40		50.68		50.19		45.70		39.55		34.13		29.42		39.43
1965	33.42		34.18		31.26		38.73		40.19		46.00		50.42		52.42		44.00		43.32		39.43		32.13		40.46
1966	33.32		32.14		34.74		38.73		40.42		47.30		50.52		49.87		49.20		40.52		37.47		38.16		41.03
1967	35.58		33.86		32.71		34.80		43.10		50.10		50.32		51.81		48.47		44.13		37.03		34.16		41.34
1968	32.94		33.97		38.16		36.47		42.81		47.80		50.81		50.35		48.30		39.87		36.03		28.81		40.53
1969	26.23		30.21		33.00		38.70		43.52		52.97		49.23		48.39		48.27		39.32		37.20		34.00		40.09
1970	31.68		33.61		33.84		36.30		40.97		48.27		49.45		49.03		44.63		38.10		34.97		31.29		39.34
1971	32.23		32.89		32.29		35.97		42.35		45.63		50.61		52.29		44.53		39.77		37.30		30.42		39.69
1972	27.42		31.21		36.68		35.30		43.23		47.77		49.65		50.26		44.23		37.45		36.00		29.10		39.02
1973	28.81		31.64		35.84		36.20		42.39		48.13		49.35		47.16		47.00		42.26		34.40		35.90		39.92
1974	29.13	a	34.21		34.81		39.33		42.19		46.17		50.42		51.13		47.03		39.35		39.10		35.26		40.68
1975	32.58		32.04		32.58		33.90		41.77		47.27		52.29		51.06		46.30		43.19		35.17		34.03		40.18
1976	34.03		33.00		32.39		36.90		41.97		44.87		50.84		52.45		49.20		40.52		36.33		33.74		40.52
1977	27.52		35.39		35.00		38.80		42.03		48.50		49.23		54.00		47.55	j	39.16		33.93		32.84		39.67	a
1978	34.39		36.07		36.81		38.80		42.39		49.43		51.52		51.81		48.63		40.35		30.17		26.61		40.58
1979	22.81		32.43		35.42		38.83		43.45		45.73		50.55		51.35		48.73		42.45		32.53		35.84		40.01
1980	25.10		34.41		35.74		40.13		43.16		48.17		50.71		49.55		47.20		38.32		36.87		35.71		40.42
1981	33.61		32.82		35.90		38.57		42.94		46.67		50.10		51.35		46.50		38.45		35.80		32.29		40.42
1982	30.90		31.29		32.26		33.13		40.23		47.83		48.90		50.26		46.83		40.29		30.43		30.13		38.54
1983	33.42		35.21		37.13		35.57		43.90		47.80		50.84		51.16		44.37		37.23		38.17		24.61		39.95
1984	33.65		34.00		37.68		37.00		40.73	a	45.70		48.71		48.03		44.80		37.94		34.70		27.39		39.19
1985	27.06		29.63	a	31.16		37.63		41.58		46.03	a	50.68		48.58		43.53		39.63	a	26.62	a	26.10	a	37.35
1986	34.67	a	32.40	h	38.68		37.72	a	43.00	a	48.53		49.17	a	52.61		46.23	d	42.07	b	38.14	a	31.17	b	42.00	a
1987	32.07	a	35.54		37.35		40.14	a	45.33	a	48.03	a	51.87		50.19		47.27		39.45		39.90		30.74		41.49
1988	30.77	a	33.57	a	35.13		39.20		44.00		47.23		50.23		50.43	a	45.63		46.55		38.30		32.84		41.16
1989	33.55		25.22	a	33.97	a	39.53		43.87		49.57		50.97		51.39		46.07		40.77	a	39.37		34.80	a	40.76
1990	35.65		31.11		35.93	a	41.03	a	44.58		49.54	b	53.87		53.74		49.97	a	40.32		38.72	a	26.42		41.74
1991	30.61		37.46		33.50	a	38.10		44.61		47.57		52.13	a	52.97	a	47.03	a	38.97		39.14	a	35.87		41.50
1992	34.68		37.14		37.32		41.07		44.58		50.83		53.16		51.19		46.10		43.45		36.43		30.84		42.23
1993	26.80	a	28.21		35.87		40.33		47.48		49.67		51.68		52.55		45.50		43.17	a	30.30		32.50	a	40.34
1994	37.07	a	30.89	a	36.10		41.23		44.35		46.83		51.29		52.03		49.43	b	39.55		33.80		33.23	a	41.32
1995	33.37	a	35.44	a	34.77		38.70		45.80	a	49.03		54.17	a	-----	z	50.43		42.10	a	41.03		34.27	a	41.74	a
1996	33.81		31.28		36.03		42.00		42.90		47.31	a	52.71		51.97	b	46.33		41.68		35.87		32.90	a	41.23
1997	34.61		33.68		36.84		38.45	a	47.55	b	49.77		52.20	a	54.86	b	51.52	a	42.66	b	38.18	b	32.80	a	42.76
1998	35.00	a	37.41	a	37.73	a	39.13		45.84		50.17	a	56.00		52.87	a	48.43	b	41.62	b	40.34	a	33.29		43.15
1999	35.35		35.04	a	34.38	b	36.62	a	40.77	a	48.93		50.52		54.00	f	45.28	a	40.23		40.07		36.23		40.31	a
2000	31.55		34.24		35.19		39.67		44.53	a	49.29	b	52.48		50.81		48.17		41.55		32.37		32.90		41.06
2001	32.77		30.18		35.84		37.83	a	43.20	a	47.83	a	50.79	b	52.80	a	47.13		41.55		39.13		33.32		41.03
2002	35.38	b	32.39		33.20	a	38.47		42.83	a	49.37		52.55		50.40	a	46.80		40.03		38.39	b	35.34	b	41.26
2003	36.93	a	32.67	a	39.70	a	39.63		43.68		50.31	a	52.13		52.03	a	49.40		46.07	a	33.14	a	34.23		42.49
2004	33.16		35.38		38.43	a	38.72	a	46.73	a	50.50	b	54.52		56.29		49.62	a	44.13	a	35.36	b	35.72	b	43.21
2005	34.23		29.89		39.00		40.57	b	48.10	b	49.97	a	52.61		53.90	a	45.80		45.63	a	36.28	a	33.17	b	42.43
2006	38.58		31.32		35.47	a	38.17	a	43.86	b	51.15	d	53.30	a	50.07	a	47.34	a	41.31	b	35.62	a	32.83	b	41.59
2007	30.06		36.29		37.93	b	39.93		43.10		49.80		55.50	a	52.71		48.55	a	40.78	d	35.83		35.00		42.12
2008	31.13		34.69		34.23		36.07		45.71		47.63		51.10		54.42		47.57		40.13		40.50		30.39		41.13
2009	31.67	a	30.82		32.74		37.27		43.10	a	51.37		54.52		53.74		49.27		41.71		38.77		27.42		41.03
2010	39.32		35.43		35.90		39.57		42.97		48.37		51.06		52.23		51.27		42.48		35.57		35.10		42.44
2011	34.06		30.50		36.52		36.47		42.29		49.57		-----	z	-----	z	-----	z	42.19		32.55	a	31.32		37.27	c
2012	31.61		34.79		34.58		40.21	a	43.55		48.63		53.03		53.48		47.17		41.87		38.57		35.83	a	41.94
2013	-----	z	36.69	o	37.15	k	38.55	j	44.60	k	48.90	j	53.12	o	-----	z	50.67	r	39.32	i	32.56	u	28.24	j	-----	z
2014	35.16	l	31.16	i	37.29	j	41.14	h	47.48	j	49.24	i	54.29	j	55.95	j	52.44	l	47.95	l	37.56	n	33.90	j	-----	z
2015	34.65	k	39.50	j	40.05	l	40.25	j	46.12	n	51.58	k	54.91	i	54.14	j	47.45	j	45.55	k	36.18	m	34.91	i	-----	z
2016	36.39	m	37.39	k	38.57	h	43.45	j	46.95	j	49.73	h	54.16	l	53.04	h	47.48	i	44.35	k	41.63	k	30.14	j	-----	z
2017	26.45	k	30.89	j	38.86	i	40.35	j	45.27	i	49.52	i	50.90	k	53.70	h	50.15	j	40.95	i	38.67	l	30.80	k	-----	z
2018	36.95	j	32.68	i	35.09	i	40.24	i	47.64	i	49.10	i	53.57	j	54.17	h	47.68	k	41.59	i	39.89	k	34.10	k	-----	z
2019	34.10	k	25.94	j	32.50	k	39.90	j	46.27	i	49.80	j	54.05	j	54.32	i	51.37	k	37.24	j	35.19	n	34.90	j	-----	z
2020	35.62	j	31.74	j	33.32	i	36.73	s	43.79	l	49.05	h	52.82	i	50.95	j	51.62	i	43.89	l	37.72	l	34.10	j	-----	z
2021	35.00	l	33.05	i	32.22	h	36.36	h	42.95	k	49.40	j	53.15	k	53.55	i	46.81	i	42.43	j	38.26	k	32.19	j	-----	z
2022	33.30	k	30.74	i	37.57	h	34.30	j	42.30	k	49.05	i	54.85	k	55.09	h	49.90	i	44.81	j	30.95	k	29.52	j	-----	z
2023	34.45	k	30.16	i	32.52	h	37.35	j	47.91	i	48.81	i	52.47	l	54.83	h	48.75	j	43.95	i	32.74	k	37.30	k	-----	z
2024	35.14	j	35.40	i	35.19	j	36.85	q	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	31.52		32.99		34.94		38.15		43.17		48.00		50.92		51.13		47.09		41.35		36.04		32.58		40.60
S.D.	4.03		2.54		2.16		1.98		1.90		1.91		2.04		1.98		1.82		2.10		2.99		2.87		1.23
SKEW	-0.95		-0.19		-0.11		-0.32		0.45		0.22		0.62		-0.04		0.19		0.21		-0.59		-0.53		-0.15
MAX	39.32		38.43		39.70		42.67		48.10		52.97		56.32		56.29		51.52		46.55		41.03		38.29		43.21
MIN	18.10		25.22		29.26		33.13		39.39		43.50		47.03		46.29		43.53		37.23		26.62		24.61		37.35
YRS	71		70		72		72		72		72		71		68		70		72		72		72		65