CRATER LAKE NPS HQ, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(351946)

File last updated on April 19, 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
1919	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	20.69	e	19.23		15.10	a	18.34	i
1920	17.81		11.79		15.87		18.27		22.68		31.93		35.87		34.77	a	32.27		24.77		20.10		21.21	g	24.19	a
1921	23.69	b	23.54	b	21.16		23.37	c	26.81		32.87		34.55		35.61		27.17		29.19		28.00	k	14.50	a	26.59	a
1922	3.86	b	17.00		20.39		17.07		24.03		32.37		36.32		35.52		31.00		28.77		18.00	a	14.17	b	23.21
1923	14.59	b	14.12	b	18.39		19.83		26.61		-----	z	39.13		37.48		35.48	a	28.68		24.96	d	14.67	d	24.90	a
1924	16.07	a	20.89	b	16.39		22.47		28.45		36.96	c	35.13	a	35.29		32.47		25.42		17.32	b	7.15	e	24.50
1925	22.10		14.50	d	18.39		22.17		-----	z	-----	z	-----	z	29.15	k	-----	z	-----	z	-----	z	-----	z	19.29	h
1926	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	30.70		18.23	a	24.47	j
1927	19.16		18.50		19.67	a	22.83	a	28.95	k	37.37		43.61	h	44.17	a	33.70		31.74		25.41	a	16.42		26.90	b
1928	22.77	a	21.62	c	24.57	a	21.75	b	36.57	a	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	25.45	g
1929	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	40.13		-----	z	29.39		25.25	b	17.93	a	28.17	h
1930	5.77		17.68		-----	z	19.43		18.48		-----	z	-----	z	41.58		-----	z	-----	z	25.37		19.33	a	21.09	e
1931	19.03		20.50		19.00		21.31	a	27.60	a	37.93		44.48		40.23	e	31.83		25.77		18.48	c	16.29	n	27.83	a
1932	13.03		11.45	g	23.80	f	21.53		29.90		36.10		40.35		41.93	a	38.07		31.87	a	26.83		13.00	a	29.26	b
1933	13.94		11.79		17.20	a	23.13		25.50	a	34.77		43.39		43.90		33.00	a	34.97		29.00	a	23.48		27.84
1934	24.20	a	24.26	a	29.40	a	30.47		32.52	b	35.73		40.97		43.23		37.77		30.10	a	24.40		20.39		31.12
1935	17.84		20.93		15.03		23.13		27.35		35.70		34.90		41.87		39.20		28.77		21.07		22.94		27.39
1936	19.84		18.69		19.55		26.00		31.42		35.97		45.73	a	43.52		37.80		36.52		28.63		20.16		30.32
1937	5.97		15.79		22.06		21.90		29.94		36.00		44.03		40.35		38.34	a	36.19	d	26.80		24.23		28.47
1938	21.39		17.54		16.94		23.70		29.16		36.03	a	44.94		40.00		40.60		31.42		21.43		22.16		28.78
1939	18.77		14.93		21.45		28.86	a	31.55		33.57		44.55		46.12	g	38.73		32.81		29.23		24.19		28.97	a
1940	22.68		21.69		23.60	a	25.13		32.00		40.20		40.32		44.30	a	33.78	c	31.77		22.50		21.84		29.98
1941	21.26		21.96		24.45		25.62	d	30.81		33.83		45.03		41.43	a	33.63		31.80	a	28.30		20.90		29.92
1942	20.87	a	16.07		19.52		24.20		27.94		33.30		44.61		44.61		40.33		33.23		26.71	w	-----	z	30.47	b
1943	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	38.33	a	40.27	a	41.71	p	-----	z	-----	z	-----	z	39.30	j
1944	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	42.32		39.97		-----	z	-----	z	-----	z	-----	z	41.15	j
1945	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1946	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	26.32		21.17		21.03		22.84	i
1947	16.16		23.21		23.06		25.50		33.42		32.63		43.87	a	39.32		33.37		32.16		23.90		20.03		28.89
1948	20.67	a	15.54	a	17.90		20.03		27.84		35.21	a	41.06		45.71		37.43		32.00		20.53		11.74		27.14
1949	6.97	a	13.68		19.55		27.57		32.47	a	35.50		41.42		38.77	a	39.17		27.84		30.37		17.16		27.54
1950	10.97		19.52	a	17.47	a	22.23		28.94		33.20		40.87		45.32		39.87		31.68		27.30		27.10		28.70
1951	16.45		16.96	b	15.74		28.93		30.26		36.40		44.70	a	42.80	a	43.31	a	30.29		24.41	a	16.52		28.90
1952	14.10	a	16.79		16.23		25.66	a	29.77		31.80		42.50	c	38.40	k	40.41	h	37.42	e	21.50		18.48		25.43	b
1953	23.13		19.26	a	17.94		21.23		25.57	a	29.79	a	39.61		39.87		42.79	b	30.07	a	27.32	b	21.06		28.14
1954	15.97	a	21.79		14.71		23.86	a	29.67	a	30.04	b	40.52	b	36.93	a	33.79	b	29.50	a	27.31	a	18.94		26.92
1955	15.03		13.18		15.58		17.00		26.74		35.73		38.48		42.42		34.33	i	30.26		21.17		18.74		24.94	a
1956	15.61		14.14		15.19		24.46	b	30.74		31.56	c	43.84		41.24	b	36.14	b	28.10		27.17		22.13		27.53
1957	11.10		21.37	a	20.07	a	23.14	a	30.00		36.20		39.03		36.97		40.73		28.81		21.23		22.03		27.56
1958	19.83	a	24.43		14.39		21.17		32.97		35.77		44.97	a	45.73	a	35.80		34.74		26.30		27.00		30.26
1959	20.77		16.36		19.10		26.30		26.32		36.21	a	43.93	a	42.00	a	32.97	a	31.32		26.97		22.10		28.70
1960	17.97		14.76		22.13		22.07		26.65		36.43		45.13		38.29		37.87		31.32		21.83		21.13		27.96
1961	21.77		18.18		18.77		22.27		27.71		37.57		41.87		43.94		32.07		28.97		20.07		15.87		27.42
1962	13.62	b	15.57		14.58		23.70		23.81		32.10		40.16		38.81		38.97		32.00		24.53		23.84		26.81
1963	17.81		26.00		18.42		18.97		30.32		33.10		36.61		39.45		39.77		30.77		23.60		23.84		28.22
1964	15.77		17.41		16.26		20.17		26.06		32.52	a	40.03		37.26		32.57		33.19		22.03		17.42		25.89
1965	20.55		18.43		19.48		24.47		25.48		33.87		39.83	a	40.35		33.76	a	34.45		25.53		15.71		27.66
1966	17.16		13.64		17.32		24.83		30.42		33.17		37.03		40.58		37.76	a	30.74		25.70		20.19		27.38
1967	19.10		18.75		15.45		14.70		26.55		34.40		41.74		45.00		39.72	a	29.65		27.21	a	17.10		27.45
1968	17.30	a	24.28		20.61		20.20		27.58		35.00		42.00	a	38.87		37.20		28.32		22.10		15.29		27.40
1969	15.23		13.18		16.84		19.73		30.33	a	36.97	a	39.63	a	35.55		35.53		25.74		26.17		21.23		26.34
1970	19.97		20.43		18.77		15.87		27.74		36.70		41.29		39.61		31.13		28.35		24.90		14.26		26.59
1971	18.00		17.57		14.77		19.37		26.65		31.67		41.97		45.19		34.00		26.74		22.70		13.77		26.03
1972	15.74		18.59		21.35		18.13		28.03		33.90		41.42		40.84		31.00		30.23		22.33		14.00		26.30
1973	13.61		20.04		15.94		22.47		30.31	b	34.20		-----	z	39.13		35.93		28.00		22.13		20.23		25.63	a
1974	13.13		13.68		18.77		19.20		25.74		35.60		38.77		41.52		39.80		30.33	a	23.24	a	18.61		26.53
1975	18.29		16.21		16.81		14.17	a	25.94		31.90		40.13	a	37.03		39.97		27.29		17.77		21.81		25.61
1976	20.06		16.21		14.26		18.83	a	26.61		30.63		38.10		36.81		38.10		30.48		29.47		21.26		26.73
1977	16.29		21.11	a	14.93	a	23.23		22.23	a	37.97		38.83	a	45.74		34.93		30.97		19.55	a	21.23		27.25
1978	20.48		18.93		22.90	a	21.77		25.67	a	32.90		41.07	a	40.31	b	33.10		32.13		19.50		11.55		26.69
1979	10.61		18.71		22.06		21.93		-----	z	-----	z	40.97		39.24	b	38.80		32.26		19.63		21.10	a	26.53	b
1980	14.87		21.93		16.03		22.33		26.68		29.73		40.03		36.43	a	34.03		31.39		22.90		22.30	a	26.56
1981	23.32		17.00		18.97		21.67		26.45		33.83		37.87		40.68		36.70		28.00		23.63		19.68		27.32
1982	14.61		14.15	a	15.45		16.62	a	26.23	a	33.17	a	38.23		40.39		34.21	b	28.80	a	18.93	a	18.00		24.90
1983	20.87		19.22	a	22.41	b	-----	z	27.87		31.24	a	33.63	a	41.57	a	34.17	a	31.07	a	21.31	a	16.50	a	27.26	a
1984	18.90	a	19.41		20.20	a	19.33		26.29		30.76	a	39.38	b	39.74		33.23	d	25.65		18.63		13.53	a	25.42
1985	18.40	a	14.93		15.35		25.83	a	26.10		34.63		44.58		38.53	a	31.73		27.39		15.13		21.55	b	26.18
1986	22.23		21.70	a	21.94		20.20		25.65		36.00		36.87	a	44.73	a	31.79	a	31.45		23.93		18.65		27.93
1987	15.84		18.46		17.10		23.93		31.40	a	36.47		37.29		40.24	b	38.41	c	35.97	a	24.00		14.93	a	27.84
1988	15.39		19.86		17.32		25.07		24.73	a	33.03	a	41.86	b	39.50	a	35.82	b	36.59	b	21.17		19.32		27.47
1989	17.10	a	9.00		19.00		26.37		26.19		34.37		38.20	a	37.23	a	35.72	a	28.13		24.14	a	22.43	a	26.49
1990	19.03		15.37	a	-----	z	27.40		27.52		33.92	e	-----	z	41.85	d	37.96	g	26.83	a	23.83	g	12.44	o	27.42	e
1991	19.92	f	24.22	a	15.43	a	20.43		25.13	a	28.97	a	40.12	g	40.39	h	39.95	h	32.32	f	25.52	c	20.83	a	22.93	e
1992	18.97	b	23.14	a	26.58		27.86	a	35.10		38.55	a	40.72	b	42.62	b	37.04	b	33.13	a	19.93		16.87	a	30.04
1993	14.29		16.04		26.52		21.67		30.39		31.24	a	34.74		38.90	a	37.30		33.74		20.47		18.93	a	27.02
1994	22.72	b	16.04	a	22.43	a	25.46	b	31.43	a	33.72	a	42.96	h	37.97		38.24	a	29.58	g	14.27		15.33	a	25.76	b
1995	21.77		25.07	a	18.48		21.20		29.27	a	32.50		39.19		36.64	c	38.53		29.77		29.46	b	21.23		28.59
1996	20.00		20.55		20.77	a	23.57		27.16		32.93		43.52		41.65		33.50		29.35		24.67		22.20	a	28.32
1997	14.52		17.89		21.55	b	21.75	b	30.83	a	31.97	a	40.61		43.48		36.89	b	30.13		26.83	a	18.00		27.87
1998	22.32		20.93		20.77	a	23.00	b	28.10	a	32.50		42.29		42.32		39.38	a	28.52		23.00	a	16.17	a	28.27
1999	19.68		16.81	a	16.45	b	21.87		25.63	a	31.13		36.61		41.13		35.87		31.87		27.20		22.34	b	27.22
2000	17.84		22.85	b	16.97	b	26.73		29.61		36.00		39.94		40.55		35.93		29.03		20.73		21.55		28.14
2001	19.03		16.70	a	23.26		20.50		32.23		34.07		41.00	a	43.27	a	38.83		31.81		25.23		17.90	a	28.65
2002	16.42		19.38	b	17.00		25.50		27.55		35.17		43.42		38.26		36.79	a	27.61		24.90		22.13		27.84
2003	26.07	a	16.89	a	21.63	a	22.17		28.63	a	34.87		44.74		41.97	a	38.66	a	32.30	a	18.41	a	20.87	a	28.93
2004	19.55		19.55		24.47	a	25.70		29.77		34.20		41.94		43.19		34.33		28.29		22.03	a	23.87	a	28.91
2005	20.43	a	19.25		24.13		22.10		31.53	a	31.43		42.62	b	42.29		34.27		29.33	a	24.21	a	19.40	a	28.42
2006	18.80	a	15.39		15.26		24.20		30.32		34.96	d	44.68	c	40.10		37.31	a	29.43	a	22.14	a	18.32		27.58
2007	14.62	b	21.21		23.53	a	22.04	b	28.58	e	32.82	b	44.19		38.13		34.80		26.90	a	23.96	b	15.87		27.22
2008	15.38	b	18.93		15.73	a	18.37		28.26		28.50		37.68		39.81		36.20		31.10		26.93	a	16.83	a	26.14
2009	21.10		17.32		16.71		19.59	a	29.26		33.67		42.68		40.81		38.30		28.00		21.03		15.74		27.02
2010	22.97		19.00		18.77		20.28	a	23.77		30.97		40.77		38.52		35.87		31.61		21.03		19.48		26.92
2011	20.32		17.00		19.68		17.70		24.35		30.73		35.19		41.26		39.60		30.19		20.97		20.06		26.42
2012	19.55		16.41		16.90		23.73		27.94		30.87		39.84		42.42		39.50		30.84		24.90		17.13		27.50
2013	18.13		17.25		21.06		24.37		29.45		34.27		44.81		41.77		36.77		28.09	i	24.00		18.45		28.21	a
2014	24.55		20.33	a	21.80	a	24.03		29.65		34.34	a	45.16		43.52		39.30		32.73	a	24.67		24.07	a	30.35
2015	26.57	a	26.11		25.90		22.63	c	32.39		41.33		43.84		43.32		35.77		35.52		20.50	b	19.30	a	31.10
2016	17.19		21.93		21.45		26.70		30.87	a	34.23		40.06		43.00		35.33		29.45		26.23		11.97		28.20
2017	14.19		19.36		24.16		21.77		29.06		34.17		42.71		45.60	a	38.70		27.80	a	21.83		20.45		28.32
2018	23.16		15.25		18.03		24.17		32.35		34.50		44.17	a	43.45		35.34	a	31.63	a	25.00	a	18.27	a	28.78
2019	22.71		13.46		17.57	a	27.13		31.06		35.00	a	40.70	a	44.33	a	37.07		25.84		27.21	a	19.97		28.50
2020	20.84		18.34		19.06		24.12	d	30.61		36.63		44.16		47.29		43.93		33.97		22.33		19.84		30.09
2021	20.55		19.68		18.26		25.79	a	31.10	a	42.80		50.06		46.52		39.90		30.68		27.80		20.32		31.12
2022	23.68		21.32		23.16		20.67		27.48	d	35.70		47.26		48.42		43.13		37.10		20.33		19.48		30.64
2023	18.74		15.68		13.94		22.96	b	32.55		36.00		45.81		47.71		38.41	a	32.90	a	26.41	a	27.00		29.84
2024	23.33	d	22.65	c	22.03	a	24.69	n	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	22.67	i
Period of Record Statistics
MEAN	18.11		18.42		19.20		22.51		28.47		34.18		41.08		41.06		36.47		30.40		23.48		19.08		27.82
S.D.	4.27		3.40		3.30		3.14		2.92		2.56		3.20		3.00		3.13		2.96		3.40		3.58		1.53
SKEW	-0.87		0.03		0.57		-0.15		-0.19		0.45		-0.12		0.11		-0.11		0.01		-0.14		-0.38		0.01
MAX	26.57		26.11		29.40		30.47		36.57		42.80		50.06		48.42		43.93		37.42		30.70		27.10		31.12
MIN	3.86		9.00		13.94		14.17		18.48		28.50		33.63		34.77		27.17		20.69		14.27		7.15		23.21
YRS	98		98		96		97		95		93		92		96		91		95		97		96		78