RIMROCK TIETON DAM, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(457038)

File last updated on April 24, 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
1917	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	50.61	h	43.10	a	41.18	b	30.91	i	32.17	a	30.61		36.77	h
1918	27.65		21.18		27.13		31.33	c	35.45		43.89	b	46.58	e	44.94		40.00		37.23		28.17		22.26		33.82
1919	19.26		20.86		26.45		31.30		36.13		37.00		45.16		43.23		37.67		25.77		23.93	a	9.14	b	29.66
1920	21.90		18.66		27.29		29.53		29.65		39.60		45.81		43.68		38.10		29.97	a	24.73		22.43	a	30.95
1921	17.10		22.61		27.35		28.79	a	33.21	b	40.17	a	39.90		42.10		34.33		30.32		25.30		21.06		30.19
1922	11.30	a	15.36		23.00		29.41	a	35.28	b	43.55	a	46.07	a	46.67	d	40.66	a	34.52		25.90		14.48		30.52
1923	22.16		16.74	a	24.97		31.97		36.81		41.77		49.03		46.06		39.73		33.87		29.47		22.94		32.96
1924	17.45		28.38		26.13		31.03		37.97		42.90		47.29		45.19		38.40		33.07	b	24.77		16.38	b	32.41
1925	24.90		28.18		27.94		33.76	a	39.87	h	43.60		49.16		45.94		43.00		32.66	b	26.28	a	27.48		34.81	a
1926	21.48		27.07		28.26		35.59	a	37.32		44.37		48.11	d	47.43	a	36.70		35.39	c	29.86	i	19.11	c	34.62	a
1927	16.48	d	19.78	a	23.45		31.29	i	35.77	a	44.75	j	46.40	f	45.94		40.73		35.55		32.17	a	-----	z	31.23	d
1928	20.48	d	21.52		27.77		31.03		39.26		43.63		48.58		44.00		38.73		34.73	a	27.63		19.58		33.08
1929	7.77		9.44	a	29.10		28.07		35.68		43.17		44.93	a	46.10		39.03		33.16		23.37		25.90		30.48
1930	-----	z	-----	z	-----	z	32.97		37.19		41.63		45.90		48.06		42.77		31.77		24.87		19.77		36.10	c
1931	19.87		20.93		26.87		31.37		39.52		44.43		46.48		44.90		42.00		31.81		23.37		14.35		32.16
1932	15.03		16.45		28.87		32.77		37.10		43.40		45.03		45.94		37.83		35.48		30.90		17.71		32.21
1933	20.45		14.50		24.29		29.37		34.77		41.90		46.13		46.00		38.80		35.50	a	30.33		28.84		32.57
1934	27.97		26.82		31.00		38.77		39.30	a	42.07		46.65		46.68		41.31	a	37.23		32.41	a	26.10		36.36
1935	18.10		22.25		23.13		28.80		35.48		43.53		46.16		44.35		42.53		32.42		22.13		22.68		31.80
1936	21.90		6.25	a	25.07	a	32.67		41.13		45.10		46.29		45.65		37.93	a	33.47	a	21.83		26.84		32.01
1937	1.23		17.39		27.71		32.93		36.42		44.40		48.06		46.97		42.53		36.45		31.43		26.68		32.68
1938	21.45		19.32		25.42		32.13		38.10		44.77		50.61		45.10		45.07		34.97		24.20		24.55		33.81
1939	25.23		18.36		24.45		33.13		39.45		42.13		49.55		47.16		42.40		34.45		28.00		27.03		34.28
1940	19.94		25.72		30.39		33.40		39.70	a	46.40		50.61		47.84		45.10		38.55		24.50		23.23		35.45
1941	23.13		22.86		27.87		33.57		39.68		43.93		51.13		48.45		41.70		34.23		28.20		23.03		34.81
1942	12.16		21.43		24.74		31.67		36.32		41.33		47.90		47.23		40.73		32.23		24.21	a	22.06		31.83
1943	8.42		22.54		22.87		33.40		36.27	a	40.76	a	47.94		44.39		40.17		34.84		28.37		21.13		31.76
1944	16.27	a	20.00		23.81		31.27		37.39		44.69	a	47.74		46.29		43.87		36.57	a	26.27		16.06		32.52
1945	22.97		24.54		24.03	a	30.13		38.55		41.17		47.97		46.68		39.23		35.00		25.67		20.97		33.07
1946	22.06		21.32		28.23	a	31.50		38.13		42.73		47.77		45.00		40.63		31.16		22.77		24.39		32.98
1947	16.52		23.25		28.71		33.27		40.81		42.77		47.06		43.90		42.20		35.06		27.52	a	24.29		33.78
1948	15.32		15.90		22.32		28.50		36.77		45.07		43.68		44.81		38.53		31.10		27.90		15.35		30.44
1949	0.71		19.30	a	27.45		32.80		39.74		41.80		46.61		46.29		42.60		30.32		32.60		22.29		31.88
1950	2.71		18.50		25.16		30.33		35.97		43.97		47.71		46.29		40.27		35.16		28.27		29.03		31.95
1951	19.26		20.54		23.13		30.57		37.68		43.87		46.39		45.06		41.63		36.84		25.83		16.23		32.25
1952	11.81		21.62		24.40	a	31.40		37.61		43.67		48.39		47.32		42.20		35.65		22.33		23.13		32.46
1953	29.48		24.89		28.39		31.90		36.58		40.93		47.45		46.65		39.93		34.74		30.83		27.97		34.98
1954	18.74		24.07		20.90		30.63		37.74		42.00		44.68		44.29		40.50		31.16		32.70		21.13		32.38
1955	21.23		21.64		20.58		29.30		35.61		44.00		46.23		43.90		40.43		35.23		20.90		16.13		31.26
1956	18.71		13.34		21.74		30.30		38.68		40.60		47.45		45.29		39.70		32.58		25.03		24.81		31.52
1957	7.52		18.79		26.58		34.10		41.81		46.17		46.19		43.81		42.40		32.94		24.97		26.39		32.64
1958	24.94		30.15	a	25.13		31.27		41.61		47.57		49.26		49.55		41.69	a	33.77		24.40		26.07	a	35.45
1959	21.55		22.21		26.94		31.43		34.39		44.00		47.94		44.52		42.07		34.81		24.45	a	21.90		33.02
1960	16.55		21.59		21.90		31.53		36.19		43.20		47.42		46.23		38.97		33.77		26.40		17.45		31.77
1961	20.84		28.39		28.00		31.73		36.16		44.97		47.10		48.58		35.23		31.03		20.37		21.42		32.82
1962	17.68		22.50		22.45		32.57		33.68		41.71	b	44.48		44.00		37.70		33.52		28.27		25.40	a	32.00
1963	15.35		26.57		26.97		29.97		34.06		42.43		43.52		44.23		42.93		35.00		28.93		20.32		32.52
1964	23.61		21.86		25.68		29.90		34.10		41.47		47.84		43.32		36.63		31.39		26.50		17.23		31.63
1965	21.32		26.04		23.26		31.37		34.29		40.67		45.32		47.13		35.17		33.48		31.37		19.10		32.38
1966	19.06		19.64		22.77		30.07		35.10		40.97		44.58		43.94		42.67		31.42		28.37		26.29		32.07
1967	27.68		25.93		25.84		28.46	f	34.87		45.07		48.84		47.84		43.80		35.58		26.83		21.39		34.88	a
1968	19.65		23.41		29.71		29.43		36.48		42.57		48.10		46.55		42.37		30.81		28.17		15.87		32.76
1969	8.32		15.00		21.90		31.53		38.68		48.07		44.90		44.06		42.07		30.94		27.60		21.77		31.24
1970	16.97		26.05	h	25.29		28.77		35.32		46.63		48.94		46.81		37.80		29.43	a	27.93		18.77		32.97	a
1971	23.16		24.89		21.77		30.00		37.71		40.63		47.23		48.97		35.77		30.65		27.77		22.26		32.57
1972	19.87		21.03		26.65		28.90		37.60	a	44.10		45.74		47.35		36.67		29.16		30.14	a	16.52		31.98
1973	17.97		22.29		27.32		29.57		37.32		43.77		47.23		45.03		42.17		34.32		25.70		26.94		33.30
1974	15.23		25.54		24.50	a	31.37		34.77		43.63		46.58		46.45		39.60		30.73	a	31.47		26.03		32.99
1975	20.65		19.71		23.77		26.73		36.06		42.40		50.74		45.39		37.83		33.52		25.70		24.97		32.29
1976	23.39		22.93	b	21.97	b	30.57		35.69	b	38.77		46.06		45.61		42.73		30.58		28.13		23.52		32.50
1977	15.10		24.42	d	27.03		32.27		33.68		45.17	a	44.94	n	49.43	j	37.22	l	-----	z	-----	z	-----	z	29.61	f
Period of Record Statistics
MEAN	18.22		21.32		25.52		31.27		36.84		43.06		47.00		45.74		40.29		33.34		26.96		21.98		32.51
S.D.	6.23		4.52		2.54		1.97		2.26		2.07		1.96		1.60		2.49		2.42		3.11		4.40		1.33
SKEW	-0.95		-0.79		-0.01		0.81		-0.12		-0.16		-0.55		0.13		-0.37		-0.42		0.07		-0.43		0.62
MAX	29.48		30.15		31.00		38.77		41.81		48.07		51.13		49.55		45.10		38.55		32.70		30.61		36.36
MIN	0.71		6.25		20.58		26.73		29.65		37.00		39.90		42.10		34.33		25.77		20.37		9.14		29.66
YRS	59		58		59		58		59		59		58		60		60		59		59		59		53