COLVILLE AIRPORT, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(451650)

File last updated on May 13, 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
1937	-----	z	-----	z	28.45		35.90		38.84		48.00		52.48		46.35		44.20		38.52		31.30		25.74		38.98	b
1938	23.42		23.79		30.26		32.97		39.16		47.90		52.97	b	45.87		48.10		36.33	a	23.20		21.13	a	35.42
1939	23.74		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	23.74	k
1940	18.74		25.52		31.00		36.80		42.65		48.30		53.42		49.29		47.53		38.95	i	23.67		23.13		36.37	a
1941	24.35		25.75		30.29	q	36.43		42.77		48.90		54.39		50.94		42.97		34.16		29.57		24.42		37.70	a
1942	14.55		24.04		26.71		34.27		40.65		46.75	b	52.13		50.61		41.07		32.03		24.67		23.13		34.22
1943	10.10		20.79		22.39		35.67		37.13		45.10		49.52		47.48	b	41.77		37.06		28.37		18.81		32.85
1944	15.29		20.21		25.10		34.73		42.42		48.93		50.23		50.93	c	43.80		37.29		29.87		19.03		34.82
1945	23.39		26.14		29.35		31.53		42.77		46.43		50.55		49.48	b	41.23		35.19		27.03		21.84		35.41
1946	19.16		20.68		30.10		36.23		40.55		45.23		49.45		49.10		42.57		31.00		24.00		21.35		34.12
1947	13.87		22.93		29.52		33.90		42.74		47.97		50.00		47.55		44.93		40.52		28.20		23.77		35.49
1948	16.26		19.24		26.13		33.97		44.23		52.33		-----	z	50.00		41.28	a	30.48		28.13		12.10	b	32.20	a
1949	-3.39		11.71		27.52		34.21	a	43.90		46.27	d	50.16		54.50	a	47.03	a	31.94		-----	z	-----	z	34.39	b
1950	-0.12	g	22.81	a	25.32		-----	z	39.20	a	47.40		52.77		52.48		44.14	a	38.11	c	27.80		27.03		37.71	b
1951	18.23		19.96		23.68		30.90		41.52		46.21	b	47.37	a	50.71		42.70		37.71		28.33		12.43	a	33.31
1952	17.81		19.90		25.39		33.73		41.90		46.83		50.06		49.45		44.20		33.26		21.60		26.06		34.18
1953	31.74		26.54		28.84		33.90		39.32		46.26	c	48.13		50.03		42.38	a	35.03		30.53		25.43	a	36.51
1954	17.42		27.44	a	24.81		31.23		39.32		43.90	a	49.16		48.48		43.33		31.29		34.27		23.32		34.50
1955	22.32		16.64		20.37	a	31.37		38.68		46.20		52.79	c	46.35		41.43		36.39		20.87		16.10		32.46
1956	20.77		14.86		25.29		35.00		42.19		45.90		51.06		48.29		41.33		35.65		23.97		23.13		33.95
1957	-0.84	f	17.22	a	28.94		34.40		47.10		48.57		47.71		45.30	a	42.83	a	34.23		22.83		25.55		35.88	a
1958	25.06		30.29		27.81		32.90		45.26		51.43		52.97		52.06		40.50		32.16		22.93		24.77		36.51
1959	20.23		19.89		28.43	a	34.83		38.87		46.97		49.52		47.48		44.73		34.71		20.57		21.57	a	33.98
1960	13.45		21.55		27.61		34.03		39.61		46.07		51.52		48.97		41.17		35.68		27.23		22.13		34.08
1961	23.94	n	30.21		29.10		33.70		42.87		49.03		52.13		52.77		38.87		32.87		21.47		17.97		36.45	a
1962	10.00	a	23.04		24.29		34.67		40.71		44.20		47.68		48.03		41.10		36.26		33.10		29.48		34.38
1963	14.03		27.61		30.06		34.53		39.52		48.17		49.94		49.48		45.10		35.84		29.10		20.35		35.31
1964	21.19		15.55		23.71		31.60		38.81		46.93		49.84		46.26		37.83		31.06		26.67		15.26		32.06
1965	22.48		20.43		18.68		34.80		36.52		44.30		49.32		51.90		37.47		34.87		30.00		23.90		33.72
1966	19.39		23.82		27.71		31.97		39.74		43.63		49.84		48.65		46.83		33.52		29.00		28.74		35.24
1967	24.68		25.93		28.45		30.77		39.29		47.67		49.42		50.55		46.33		35.90		27.67		19.35		35.50
1968	19.55		25.17		30.13		30.57		37.84		45.27		50.10		50.26		42.53		32.10	a	28.80		15.94		34.02
1969	8.65		18.11		25.00		36.73		42.58		49.97		47.61		45.71		44.27		32.16		27.67		25.81		33.69
1970	18.00		23.07		26.77		32.43		39.90		50.10		52.81		48.06		38.13		30.77		25.30		18.68		33.67
1971	18.67	a	23.57		24.48		33.37		41.81		45.50		49.52		51.19		39.23		31.71		29.57		14.65		33.60
1972	13.45		21.28		30.00		30.03		42.42		47.59	a	46.81		50.00		37.63		30.90		31.43		18.65		33.35
1973	16.77		24.75		29.35		32.07		39.26		45.07		50.94		48.68		43.97		35.74		28.07		27.58		35.19
1974	16.81		27.36		29.45		37.00		38.58		47.97		49.87		47.32		36.83		27.68		31.00		25.89	c	34.65
1975	14.32		15.15	a	25.74		31.23		40.16		45.60		54.87		47.52	j	40.80		35.81		23.21	b	23.03		31.81	a
1976	21.00		21.76		23.48		32.90		38.94		43.33		50.41	d	50.71		42.30		31.13		24.00	a	18.94		33.24
1977	10.39		23.21		27.32		32.70		38.52		49.33		49.35		51.87	p	42.07	b	30.55		23.13		16.65		31.20	a
1978	15.81		24.39		27.97		35.57	g	38.81		45.87		51.42		49.23		42.87		-----	z	23.67	u	10.10		34.05	c
1979	3.19		21.32		27.68		32.37		41.03		48.57		54.87		54.81		45.70		37.97		23.70		30.10		35.11
1980	12.94		28.45		29.06		38.63		47.65		48.40		53.32		50.06		44.07		36.89	l	27.91	g	28.32		38.09	b
1981	27.74		27.64		31.77		35.03		44.19		46.93		51.94		52.77		43.63		34.48		31.47		23.16		37.56
1982	18.94		23.36		30.65		31.50		40.10		53.00		52.48		53.03		45.62	a	35.61		25.53		22.03		35.99
1983	28.10		31.32		35.00		35.43		42.53	a	49.10		50.52		54.10		40.60		35.17	a	35.40		11.45		37.39
1984	23.00		28.08	e	34.81	d	35.57		40.35		47.57		52.06		51.32		39.83		32.03		31.33		11.71		35.64
1985	18.16		16.71		26.68		35.80		43.29		48.50		56.10		51.29		43.97		35.77		12.41	a	16.58		33.77
1986	25.35		23.37	a	34.17	a	35.17		43.48		51.40		51.00		55.55		44.13		35.77		29.80		25.48		37.89
1987	23.70	a	29.25		34.17	a	40.43		45.00	a	52.27	d	55.39		51.55		45.70		33.17	a	-----	z	-----	z	41.06	b
Period of Record Statistics
MEAN	18.15		22.89		27.73		33.96		41.09		47.46		50.98		49.90		42.65		34.20		26.91		21.29		34.67
S.D.	6.42		4.41		3.41		2.19		2.46		2.26		2.18		2.46		2.70		2.66		4.25		5.09		1.37
SKEW	-0.81		-0.30		-0.11		0.45		0.59		0.46		0.32		0.21		-0.21		-0.05		-0.70		-0.43		0.52
MAX	31.74		31.32		35.00		40.43		47.65		53.00		56.10		55.55		48.10		40.52		35.40		30.10		37.89
MIN	-3.39		11.71		18.68		30.03		36.52		43.33		46.81		45.30		36.83		27.68		12.41		10.10		32.06
YRS	47		49		49		48		50		50		49		48		50		47		46		48		37