STAMPEDE PASS, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(458009)

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
1944	20.03		22.32	a	22.87	a	30.37		34.90	a	40.20		46.03		46.10	a	45.07	a	42.29		26.60		17.86	c	32.89
1945	23.07	a	24.22	a	23.40	a	27.69	a	38.90		39.93		47.68		47.77		41.57		38.32	c	23.56	c	20.38	b	33.04
1946	23.17	a	23.93	a	25.48		29.72	a	38.00		39.10		46.90		48.00		41.28	a	31.39		23.52	a	22.55	b	32.75
1947	17.14	b	25.04	a	30.30	a	32.14	a	39.63	a	38.83		44.42		44.35		43.27		34.90		27.10	a	24.33	a	33.46
1948	20.13	a	18.70	b	21.87	a	25.97		34.10		44.30		43.23		44.26		39.50		33.71		26.00		16.68		30.70
1949	8.58		18.39		26.39		30.83		38.94		38.90		43.84		45.97		44.60		32.16		33.43		21.16		31.93
1950	2.65		20.39		23.48		26.50		32.23		41.57		46.48		48.90		44.87		33.48		26.33		27.35		31.19
1951	18.26		21.86		21.32		31.77		34.74		44.03		46.74		45.48		45.60		34.55		25.97		19.00		32.44
1952	16.45		22.31		24.00		29.67		35.97		38.83		47.26		47.58		46.80		41.94		25.57		23.23		33.30
1953	28.32		24.32		25.26		29.00		33.58		37.57		46.10		47.16		44.17		39.03		29.97		26.48		34.25
1954	18.19		23.14		21.81		26.30		35.03		36.57		42.74		44.10		42.40		34.77		32.77		22.16		31.67
1955	22.26		19.96		19.10		24.97		29.97		39.60		43.71		45.16		41.83		34.32		19.97	a	17.71		29.88
1956	19.81		16.14		22.90		31.90		38.55		38.17		47.87		47.71		42.97		32.94		24.70		23.84		32.29
1957	11.35		21.50		25.68		31.77		40.81		41.77		43.42		44.48		48.10		34.52		28.33		26.32		33.17
1958	24.77		29.79		25.81		30.27		42.19		47.10		52.19		49.29		42.27		38.68		24.77		24.90		36.00
1959	20.61		22.75		25.45		30.33		33.42		41.63		48.35		44.13		39.90		36.45		24.93		23.19		32.60
1960	18.52		22.03		25.68		30.70		33.45		40.37		49.29		44.71		43.50		37.52		26.93		20.32		32.75
1961	23.39		26.43		26.81		29.13		35.45		45.93		48.90		51.81		39.17		33.55		23.07		20.71		33.70
1962	21.61		24.79		23.94		31.20		32.45		39.50		46.10		45.55		44.07		37.23		29.00		26.81		33.52
1963	15.74		31.14		26.81		29.30		36.68		40.60		43.19		48.13		47.77		37.32		27.47		21.71		33.82
1964	23.58		24.34		24.48		26.73		32.35		39.40		46.03		43.84		40.53		37.35		25.57		16.77		31.75
1965	23.55		24.57		26.84		31.50		33.77		41.33		50.03		48.32		42.23		40.03		31.33		22.32		34.65
1966	22.19		24.18		26.35		30.83		34.37	a	39.43		45.77		47.03		46.07		35.23		29.93		27.16		34.05
1967	25.19		26.18		23.74		27.00		36.26		46.53		48.10		54.45		47.70		35.45		29.13		22.58		35.19
1968	21.06		28.52		29.42		28.43		36.94		41.57		50.06		47.13		43.53		33.48		27.73		16.42		33.69
1969	11.35		21.07		27.68		29.80		40.48		48.57		46.00		44.65		43.70		34.13		30.30		23.90		33.47
1970	20.68		27.96		26.68		26.67		34.26		44.43		47.00		47.39		40.33		34.90		26.87		20.68		33.15
1971	23.97		24.39		22.13		28.57		36.06		40.10		50.55		51.26		40.50		34.42		28.23		20.29		33.37
1972	18.32		22.28		27.87		25.03		38.61		42.80		49.06		50.71		39.40		36.81		30.30		17.23		33.20
1973	18.29		25.54		27.10		30.07		36.71		40.40		47.16		43.71		43.07		34.81		24.20		26.10		33.10
1974	16.84		25.25		25.35		29.77		32.39		41.47		46.06		49.68		48.43		39.58		29.40		26.42		34.22
1975	22.19		21.00		23.97		26.67		33.84		38.87		49.03		43.16		45.67		33.97		25.17		24.19		32.31
1976	25.13		22.93		22.77		29.60		34.13		38.10		46.10		47.00		46.83		37.45		30.23		27.06		33.95
1977	21.16		27.89		26.06		33.73		33.58		43.03		44.35		52.97		40.33		34.29		23.77		21.10		33.52
1978	24.06		24.93		29.42		30.07		33.94		44.80		48.03		47.23		40.73		37.61		23.00		17.26		33.42
1979	11.16		22.43		29.19		30.70		36.97		40.87		47.26		47.19		45.37		39.00		24.97		25.32		33.37
1980	13.81		23.34		26.39		33.47		37.29		39.80		46.81		44.74		44.40		38.16		28.87		28.52		33.80
1981	26.77		24.96		29.94		30.13		35.42		38.63		46.35		52.81		45.10		36.10		30.43		23.03		34.97
1982	22.61		21.25		26.13		27.40		34.71		45.53		46.03		47.48		43.53		34.26		24.00		20.68		32.80
1983	26.61		27.61		30.71		32.40		38.52		40.47		44.48		48.23		39.23		35.52		28.63		13.29		33.81
1984	23.74		25.83		29.90		28.33		32.19		39.10		46.61		45.90		40.03		31.52		25.83		17.45		32.20
1985	17.39		19.93		24.48		31.03		35.90		40.63		51.42		46.23		39.73		32.87		14.93		16.19		30.90
1986	25.00		23.25		30.10		28.60		36.94		44.10		42.65		51.94		39.40		40.00		27.27		20.32		34.13
1987	20.58		26.04		28.90		32.37		38.10		43.60		44.74		48.23		46.93		41.61		30.77		20.26		35.18
1988	19.71		27.03		26.58		31.20		34.06		39.70		46.32		46.90		43.80		42.23		27.63		23.39		34.05
1989	23.10		15.07		24.52		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	20.89	i
1990	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1991	19.84		-----	z	24.90		30.33		34.61		38.23		46.97		48.81		45.93		36.00		27.40		26.00		34.46	a
1992	24.68		29.10		33.52		33.60		40.68		45.33		48.71		48.77		-----	z	36.58		26.83		19.32		35.19	a
1993	16.26		18.93		28.32		30.67		40.19		39.93		42.77		47.32		46.43		39.94		23.53		22.00		33.03
1994	29.65		20.50		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	25.07	j
1995	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1996	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	50.39		49.13		41.47		36.69	e	26.85	c	19.90		37.41	f
1997	21.68		24.79		26.52		29.03	a	39.58		40.50		46.37	a	50.48		45.61	b	34.87		30.87		23.87		34.51
1998	20.96	f	27.71		28.52		32.17		37.13		43.03		52.00		49.68		48.13		35.68		29.87		20.84		36.80	a
1999	27.55		23.93		25.90		29.30		32.00		39.27		45.58		49.45		44.37		35.68		31.30		25.83	a	34.18
2000	21.65		25.17		26.45		32.40		35.35		42.70		45.71		45.74		43.13		35.48		23.40		20.00		33.10
2001	22.97		22.36		28.26		29.80		36.10		38.87		45.45		49.39		45.37		33.77		30.43		23.74		33.88
2002	24.68		23.96		24.19		30.93		34.45		42.93		48.13		47.65		43.17		34.74		30.83		25.97		34.30
2003	26.84		25.04		29.06		30.73		36.06		44.00		49.42		48.77		46.43		39.29		25.00		23.90		35.38
2004	21.68		26.69		30.32		34.13		38.23		45.20		53.74		55.65		45.20		40.48		32.70		29.29		37.78
2005	27.06		28.29		33.52		34.50		42.52		43.67		50.00		52.32		44.67		40.45		28.43		23.23		37.39
2006	30.03		23.57		28.61		33.70		40.35		47.07		52.10		50.29		48.03		39.35		28.53		24.06		37.14
2007	20.90		26.96		29.32		31.17		36.06		41.27		50.23		47.42		42.63		34.35		28.07		23.61		34.33
2008	19.42		27.17		26.13		27.10		37.90		39.97		48.13		49.87		45.57		36.32		36.50		22.84		34.74
2009	-----	z	27.00	l	25.90	u	33.52	g	39.81		46.67		53.74		49.90		45.43		35.96	g	34.40		20.39	m	44.99	f
2010	30.40	f	31.50		29.32		32.57		37.74		40.87		47.61		48.10		43.97		37.03	b	32.71	p	21.40	p	38.75	c
2011	24.03		20.75		25.66	b	25.61	g	32.57	h	39.17		44.45		48.16		48.43		35.41	i	25.17		23.33	g	34.48	d
2012	-----	z	23.14	g	25.20	u	-----	z	-----	z	39.92	f	46.50	i	50.03		46.23		39.33	s	27.24	e	23.14	i	41.17	i
2013	21.93	a	27.00	f	-----	z	33.57	w	41.57	q	43.91	h	50.74	l	48.90	u	46.90	t	36.20	u	31.27	s	29.71	x	21.93	k
2014	-----	z	-----	z	-----	z	-----	z	39.00	w	41.62	i	51.76	n	52.32	i	45.81	i	-----	z	-----	z	-----	z	-----	z
2015	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	41.87	a	26.33	c	-----	z	34.10	j
2016	-----	z	-----	z	28.68	l	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	36.32		-----	z	-----	z	36.32	k
2017	-----	z	-----	z	28.50	q	30.90	a	-----	z	-----	z	48.55		55.76	b	48.30		35.57	a	29.00	a	22.35		38.63	e
2018	27.80	a	23.85	a	27.63	a	32.33		42.87		43.27		52.90		52.39		43.85	d	37.74		31.60		25.58		36.82
2019	26.74		18.25		26.48		34.14	i	42.13		43.33	c	48.71		52.03	a	45.10		34.28	m	-----	z	27.32		36.68	c
2020	26.47	a	27.27	c	28.03		33.93	b	39.16		43.50		49.44	d	49.87		50.03		39.07	d	31.07		26.10	b	37.00
2021	27.90	b	22.16	c	27.61	c	33.15	c	36.27	a	47.93		52.29		51.48	b	45.10		35.10		30.52	a	21.42		35.91
2022	23.52	b	25.21		29.77	a	27.60		33.80	a	43.00		52.94		55.06		49.07	b	42.38	j	22.87		19.74		34.78	a
2023	27.96	e	22.52	a	25.29		30.20	e	42.97	a	43.74	c	50.41	b	53.61		45.04	b	38.62	b	28.97		-----	z	37.21	a
2024	22.72	b	26.79		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	24.76	j
Period of Record Statistics
MEAN	21.52		23.99		26.50		30.15		36.51		41.76		47.57		48.42		44.11		36.53		27.55		22.41		33.72
S.D.	5.03		3.28		2.79		2.30		3.00		2.79		2.80		3.01		2.76		2.69		3.46		3.44		1.60
SKEW	-1.13		-0.21		0.05		-0.27		0.32		0.52		0.32		0.48		-0.08		0.38		-0.43		-0.28		0.41
MAX	30.03		31.50		33.52		34.50		42.97		48.57		53.74		55.76		50.03		42.29		36.50		29.29		37.78
MIN	2.65		15.07		19.10		24.97		29.97		36.57		42.65		43.16		39.17		31.39		14.93		13.29		29.88
YRS	70		70		69		67		68		69		71		72		71		69		71		67		60