CHELAN, WA

Average of Average Temperature (Degrees Fahrenheit)

(454430)

File last updated on April 16, 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
1891	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	74.84		74.52		62.87		53.81		-----	z	30.43	a	59.29	g
1892	21.76		-----	z	45.31		48.23		58.66		68.72		71.03		72.98		63.57		51.31		-----	z	-----	z	55.73	c
1893	19.29		20.57	a	34.34		46.92		57.42	a	61.27		72.78	b	73.55		59.58		46.87		35.46	b	31.40		46.62
1894	24.56		25.77		38.87		49.82		60.03		65.60		75.24		76.47		60.65		48.08		41.10		28.10	b	49.52
1895	24.19	b	33.48		41.53		51.15		56.31		66.07		70.73		71.44		55.78		51.02		36.68		31.85		49.19
1896	28.08		35.69	b	38.44		47.82		53.40		65.93		74.94		70.85		60.25		50.60		27.30	c	35.00	a	49.02
1897	27.68		30.21		33.42		52.80		62.44		64.62		68.02		74.73		61.20		50.35		34.22		25.73		48.78
1898	21.95		35.16		39.81		53.68		60.92		64.47		73.69		75.61		62.07		-----	z	35.65		23.50		49.68	a
1899	25.68		26.88		40.27		48.50		57.21		63.37		73.11		65.45		65.55		49.44		45.05	b	31.29		49.32
1900	33.03		31.50		44.95		54.35		60.66		69.60		73.77		68.27		61.27		49.50		34.25		39.02		51.68
1901	27.22	a	30.75		42.02	a	-----	z	59.07	a	61.65		69.90		75.50		59.22	a	55.66		41.32	b	32.77		50.46	a
1902	28.27		33.12		41.15		49.02	c	58.95	a	63.50		68.55	c	73.29		60.90		53.81	b	36.61	b	26.16		49.44
1903	27.00		28.83	m	37.50	a	48.50		58.05		68.78	a	69.47		70.61		60.07		50.70	c	35.97	a	24.92		50.14	a
1904	27.27		28.74		35.26		50.82		58.08		66.67		74.23		75.26		66.21	a	49.87	a	41.15		32.59	b	50.51
1905	29.22	b	29.02	a	44.23	a	52.23		57.73		64.90		74.40		71.55		63.52		45.94		38.00	a	30.00		50.06
1906	28.66		34.78	a	39.58		55.13		59.39		62.45		80.44		74.08		64.45		54.50	a	40.08		31.18	a	52.06
1907	14.69		30.23		38.63	a	49.07	a	61.77		64.59	a	72.34		67.59	o	63.12		57.00		41.64	b	32.56	d	47.79	a
1908	29.72	b	29.91		41.82		51.40		56.61		66.52		74.84		73.15		64.20		51.06		42.27		29.08		50.88
1909	17.50	b	31.00		41.32	a	49.55		58.66		65.97		70.23		70.92		65.78		51.19		38.63		22.68	a	48.62
1910	24.87		24.80		45.15		52.80		62.06	f	64.87		73.31		68.56		61.87		52.74		38.05		31.79		48.98	a
1911	23.03		27.52		42.85	a	50.77		56.29		66.68		73.48		71.06		59.41	c	50.74		34.30	b	27.83	b	48.66
1912	23.52		33.53		39.89		51.15		61.26		68.27		71.76		68.82		60.60		48.35		40.15		32.47	a	49.98
1913	22.62	a	24.68		37.66		51.10		58.44		66.32		71.95		73.00		62.62		47.81		39.86	a	31.68		48.98
1914	31.05		29.23		43.16		52.73		61.60		65.27		76.02		74.61		60.27		52.63	a	39.68		23.48		50.81
1915	24.35		34.29		45.40		56.02		58.08		67.36	a	72.89		78.44		63.02	a	52.79		34.77		27.10	a	51.21
1916	14.03		27.69		38.90		51.60		56.53		63.68		67.65		72.56		63.50		50.95		34.40		23.26		47.06
1917	22.55		26.91		34.60		46.05		58.56		64.30		74.52		75.56		65.33		54.55		42.58		31.80	a	49.78
1918	31.40		29.48		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	53.41	b	38.74	a	32.57	c	37.12	g
1919	32.92	s	29.11		39.73	a	50.81	a	55.98	b	62.81	c	71.22	f	71.32	f	59.95	a	48.31	b	35.25	b	27.40	k	47.74	d
1920	27.18		35.41		-----	z	-----	z	-----	z	63.50	k	76.59	d	72.88	b	60.31	f	47.71	e	38.30	e	31.77	c	47.12	e
1921	27.38	c	30.81	a	41.00	a	47.81	d	60.92	k	-----	z	-----	z	-----	z	57.71	d	53.12	k	35.48	a	23.73	g	40.03	f
1922	17.70	a	20.84		36.27		47.11	g	56.66	f	70.83		75.81	d	72.50	b	64.67	f	53.36	i	-----	z	-----	z	48.99	f
1923	-----	z	24.54	b	40.53	a	53.24	g	59.84		65.82		75.55		74.47		67.52	a	52.31	b	40.13	d	29.25	c	53.00	b
1924	22.19		36.91	b	43.03		50.27	b	66.21	c	67.80		76.33	a	74.45	c	65.50	a	51.76		37.11	b	25.02	b	51.38
1925	28.83	b	37.91		44.15	a	53.45		61.95	b	69.38		78.55	a	72.53	b	63.82		50.80	a	37.72	a	36.34		52.95
1926	29.00	a	38.84		47.95		55.48		59.62	a	72.67		78.95	a	73.57	b	58.20		52.23	a	41.15	d	28.15		52.98
1927	25.55		32.28	a	41.12	a	49.36	a	56.95	a	69.29	a	76.39		73.42		60.93	b	50.24		37.43		24.18	a	49.76
1928	28.47		35.40		43.77		48.22		63.06		67.83	a	76.78	a	72.94		64.98		50.78	a	40.03	a	28.45	b	51.73
1929	16.40	a	20.34	c	43.38	b	48.20		59.74		65.68		73.62	a	75.87	a	62.18		52.98		36.93		30.67	b	48.83
1930	13.89		34.43		44.05		54.90		58.53	b	64.65		75.05		74.77	a	64.37		48.87		35.71	a	28.84		49.84
1931	31.20	a	33.10	c	42.06		52.08		61.86	b	66.05	a	75.85		74.28	a	62.57	b	52.08	f	35.52		26.12	b	50.97	a
1932	22.88	a	28.70	a	40.95		53.02	f	58.57	a	69.45	b	69.52	f	71.80	a	63.22	a	52.13	a	41.14	a	27.62	g	49.87	c
1933	30.02	b	23.98	c	41.17	b	50.80		54.52		65.35		73.03		73.82	a	58.97	a	52.10		41.02	a	34.63		49.95
1934	33.88	g	38.02	b	46.90		57.11	b	61.33	b	69.52	c	72.52	f	74.76	f	57.67	f	53.69	e	42.43	b	31.83	a	50.10	d
1935	25.71	b	33.69	a	39.38	a	48.05	a	59.42		64.57	g	71.16		69.20	d	64.80		49.48	b	33.38	b	30.03	l	49.43	b
1936	28.95	a	14.67	b	39.30	a	53.03		62.57	c	65.72	a	72.85	a	72.74	b	62.10	e	52.13	a	33.38	a	31.09	b	49.04
1937	11.47	a	24.02		39.77		47.33		57.92		63.70		74.30	a	68.84		64.42		53.89		37.83	c	31.29		47.90
1938	27.42		29.80		39.63		51.62	a	60.27		68.15		75.98		69.98	a	66.52		51.55	b	36.93	b	29.90	b	50.65
1939	32.10		28.50		41.40		52.63		60.27		64.95		73.90	a	74.12	a	64.53		52.15		40.57		36.66		51.82
1940	30.39	d	33.86		45.47	b	52.22		62.25	c	71.08		73.86	c	73.32		66.63		51.71	e	32.90		32.21	b	52.16
1941	26.70	a	36.06	a	46.67	b	54.82		59.48		65.22		74.94		69.65		58.38		51.82		42.64	b	33.22	a	51.63
1942	25.82	a	33.50	a	42.22	a	52.33		56.27	a	63.52	b	74.44		74.41	c	65.62	b	52.21		35.44	c	29.58	a	50.45
1943	19.24	d	33.52	a	40.08		53.52		56.44		63.30		72.19	d	70.07	c	65.70		52.08	f	39.55		30.82	a	49.49	a
1944	28.21		33.24		41.22	a	52.25		60.48		66.83	a	73.29		68.77		63.14	b	53.37		36.78	a	26.66		50.35
1945	29.87	a	35.72	a	41.58	e	48.52	a	58.81		65.16	a	74.64	b	72.59	b	60.46	b	52.64	b	35.07	g	29.30	c	51.75	a
1946	26.70	h	29.20	f	39.86	j	48.48	g	62.55		63.66	a	71.53	a	70.93	c	60.65		46.26	d	31.65	c	28.34	f	58.17	e
1947	23.60	f	31.57	a	44.13	a	53.05	a	63.95		64.00		70.57	a	67.89		61.73	b	49.00	b	37.33	a	29.40	j	54.32	b
1948	-----	z	-----	z	-----	z	-----	z	-----	z	66.88		67.55		65.07	a	59.87		46.62	a	36.10		19.87	a	51.71	e
1949	9.77	a	19.84	c	38.57	a	51.52		62.47		65.45		71.26		71.11		63.10		48.71		42.72		29.24		47.81
1950	8.68		27.55		37.66		46.22		55.45		63.90		72.16		71.82		64.63		47.39		36.83		32.82		47.09
1951	27.95		30.07		35.06		50.22		57.47		64.88		72.47		71.68		62.02		48.30	a	35.40		22.87		48.20
1952	19.81		29.78		38.58		50.40		59.48		64.77		73.11		72.52		65.57		55.66		36.40		33.69		49.98
1953	37.18	a	38.88		43.90		48.78		57.18		61.53		71.82		69.67	a	63.20		52.92		42.07		36.69		51.99
1954	25.52	a	35.22	a	38.53	a	45.60		58.76		62.08		69.34		68.40		62.00		48.85		44.13		31.24		49.14
1955	28.93	b	29.95		34.71		45.82	b	54.83	a	65.95		68.71		71.42		63.32		49.98		29.53		25.00		47.35
1956	28.58		21.67		37.10		51.70		62.11		62.55		74.08		72.20	a	63.23		50.58		35.52		31.33	a	49.22
1957	15.97		27.16		39.31		51.17		63.97		67.08		70.50		68.39		64.60		48.44		38.33		34.70	a	49.13
1958	32.28	a	40.19	a	41.40		49.35		66.03		70.25		77.47		77.58		62.72		51.60		35.08		31.38	b	52.94
1959	27.42	a	29.73		42.17	b	51.84	a	55.90		65.25		74.08	a	69.57	a	59.63		49.74		35.00	a	32.27		49.38
1960	25.09	c	34.04	a	39.60	a	49.78		56.45		66.45		77.69		70.44		61.90		51.62	a	37.70		27.55	a	49.86
1961	30.75	a	38.46	a	42.41	c	50.21	a	57.73		70.75		75.16		75.65		60.53		49.34		33.77	d	28.74		51.12
1962	25.29	b	36.58	j	38.42	a	52.80		55.98		65.70		72.26		69.39		62.64	a	51.21		40.76	a	34.08		51.68	a
1963	25.48	c	37.12		43.39		47.60		58.50		66.83		70.27		71.29		66.18		53.16		39.83		29.29		50.75
1964	30.19		31.60		40.60		48.82		57.76		65.63		71.27		67.92		58.98	a	49.65		37.85		25.18		48.79
1965	29.42	a	33.57		38.37		52.23		58.44		66.02		72.68		71.89		60.22		52.00		41.05		30.83	a	50.56
1966	26.45		33.96		40.40	a	51.45		60.68		63.27		69.94		71.40		65.77		49.89		41.42		34.77		50.78
1967	34.92	a	39.59		41.73		46.10		57.80	a	68.67		73.97		76.52		67.72		50.77		40.79	a	28.89		52.29
1968	27.85		36.19		44.69		48.42		58.69	b	65.90		74.55	a	68.06		63.05		47.56		39.27		26.22	a	50.04
1969	15.53		26.20		38.90		50.18		62.48	a	70.63		71.63		70.79		62.13		48.61		38.92		31.63		48.97
1970	25.90		34.95		41.15		47.77		59.39		70.27		75.82		71.44		58.63		48.50		36.47		26.39		49.72
1971	28.29		34.00	a	36.81		48.45		60.90		63.00		72.69		76.60	a	58.78		48.82		38.68		23.87		49.24
1972	23.50		30.76		42.63		47.22		59.32		64.75		69.16		72.02		58.00		48.52		39.83		27.42		48.59
1973	25.73		33.62		43.81		52.32		59.97		65.75		74.10		73.73		62.85		50.32		34.73		34.23		50.93
1974	26.90		37.66		40.66		49.78		55.73		68.25		69.87		73.18		64.42		51.13		40.37		33.81		50.98
1975	26.63	a	27.29		37.73		47.65		58.26		65.43	a	75.23		68.63		62.90		49.74		37.85		32.00		49.11
1976	29.76		35.05		38.58		48.95		57.53		62.27		71.23		67.48		64.88		50.53		38.85		31.56		49.72
1977	23.98		37.34		42.74		53.25		56.77		69.90		71.73		76.18		59.98		49.29		36.80		30.02		50.67
1978	29.11		34.29		43.40		49.70		57.73		68.68		73.29		70.08		59.93		50.50		33.78		25.40		49.66
1979	17.11		28.63	a	42.47		50.03		62.15		69.77		74.82	a	73.82		65.08		53.29		34.77		33.50		50.45
1980	19.70	a	30.59		40.47		51.92		58.90		63.03		70.81		67.61		61.02		49.69		38.67		30.61		48.58
1981	35.50		34.52		44.39		48.77		57.82		61.20		69.34		75.02	a	62.58		48.24		39.82		29.66		50.57
1982	25.83	a	32.09	a	41.39		46.88		57.47	a	69.28		69.71		70.55		61.87		49.21		33.38		28.79		48.87
1983	33.25	a	36.43		44.42		49.67		59.47		60.95		62.52	a	69.33	a	55.52		49.74	d	41.14	a	20.35		48.57
1984	29.28	a	34.38		44.40	a	48.17	a	54.98		63.26	a	72.23	a	71.45	a	58.83	a	46.77	a	36.05	a	20.14	c	48.33
1985	23.84		24.22	a	-----	z	52.58		60.55	c	66.15		77.86	c	71.41	d	58.80	c	49.22	d	23.46	e	21.55	a	48.15	a
1986	28.88	c	31.63	b	43.76	d	49.97	a	58.60	b	71.23		71.24		77.36	b	60.23		52.47		39.47	a	30.54	c	51.28
1987	27.85		36.82		43.90	a	54.37		61.81		69.28		71.50	b	72.60	a	67.73		53.47	a	42.52		28.38	b	52.52
1988	26.70	a	34.34		43.98	a	53.18		59.02		65.41	a	73.41	b	72.71	b	62.90	a	55.52	a	39.68		29.92		51.40
1989	30.53		25.31	a	38.32		52.10	a	58.68	a	69.68		72.26		71.03	a	64.48		51.81	b	41.55	a	32.89		50.72
1990	35.08	a	30.43	a	43.55		55.07	b	57.63		64.80	c	75.62	b	73.66	b	67.05		48.81	b	41.76	c	22.88	b	51.36
1991	24.45	b	38.81	a	40.68		50.52		57.24		62.31	a	73.23		72.97	b	64.68	b	48.44		36.84	a	34.48	a	50.39
1992	32.19		38.16		45.29		52.12		61.98	a	72.05	a	69.80	a	71.65		60.55		51.55		38.37		24.56		51.52
1993	21.23	a	28.87	a	37.85	a	48.22		64.13	a	64.42		66.74		69.98	b	63.22	a	52.73	a	32.74	a	31.15		48.44
1994	33.17	b	30.78	a	43.35	a	53.57		60.68		65.03		76.66		72.02		65.86	a	51.53		33.22		30.29		51.35
1995	28.45		35.76	a	40.40	a	50.08		61.71		66.10		73.37		67.24		65.57	a	49.73		39.05	a	31.00	a	50.71
1996	25.70	c	30.69		41.59	c	50.26	a	56.26		65.37		74.00	a	71.27		60.52		50.10	a	36.00	e	19.39	q	51.07	a
1997	25.83	e	30.72	a	39.66		48.80		59.50	a	63.88	a	70.16		73.03		63.66	a	49.95		40.65		31.81		49.80
1998	28.53		38.41		44.34		50.40		60.30	c	66.17	a	76.76		74.67	a	68.91	a	52.18		43.10		29.55		52.78
1999	33.00	a	36.52		41.53		49.42		56.58		62.31	q	71.13	h	73.15	a	63.08		51.18		43.55	a	36.56		48.46	b
2000	28.98		33.73	a	42.76		53.37		58.63	a	65.98		72.73	a	72.94		61.07	c	51.08		34.55	a	27.84		50.31
2001	31.82	a	31.89	a	43.06		50.08		60.60	a	64.05		72.73	c	75.02		67.05		51.50		41.83		32.58	a	51.85
2002	32.98	b	35.48		38.53		50.59	b	56.98	a	68.90		74.17	a	72.43	b	64.33	a	50.63		40.21	b	35.34		51.71
2003	33.50		36.25		43.71		49.90	a	57.89		70.02		77.13		75.60	a	66.62		55.61		36.34	a	29.58		52.68
2004	27.72	a	34.45		46.53	a	54.50		59.45		69.53		75.94		75.42	a	62.81	a	53.79		39.98		33.61		52.81
2005	27.06		36.27		45.44		51.91	a	61.45	a	64.92		73.47		75.20	a	63.75		53.87		37.00		25.52	c	51.32
2006	34.10	a	34.57	a	42.24		50.50		59.27		67.42		76.53		74.02		63.80		53.29		37.27		27.94		51.75
2007	26.11		35.61	a	43.57	a	50.70	c	60.53		65.14	a	76.63		71.92		65.23		49.60		37.88		29.65		51.05
2008	22.40		34.50		42.94	n	-----	z	63.60	u	64.62	b	73.00	d	71.55	l	64.05	j	49.73	e	40.36	p	25.33	p	48.85	g
2009	25.17	j	31.72	e	38.39	c	48.45	k	59.72	f	68.58		75.18	c	73.83	k	66.26	m	48.86	c	40.44	d	24.71	g	50.53	f
2010	34.46	f	38.54	c	43.44	e	49.61	c	55.14	c	63.98	b	73.13	a	71.19	d	61.54	e	52.71		35.43		30.82		52.32	a
2011	29.19		31.16		39.89		46.10		55.00		62.78		66.84		73.21		66.25		51.69		37.27		30.52		49.16
2012	27.74		34.69		39.91	i	50.67	i	57.98		62.14	p	74.05	a	75.53	b	64.95		51.87		41.48	b	32.48	c	51.20	c
2013	24.38	b	34.95		43.27		51.23		60.31		65.30		77.15		73.79	c	67.20	g	50.10	a	39.58	l	27.76	n	53.39	c
2014	32.95	l	30.62		43.26		52.35		62.50		64.12		76.31		74.56		62.93		53.98		36.07		30.53	b	53.39	a
2015	30.55		39.14		47.11		50.10		60.87		74.18		75.85		72.68	c	61.38		54.77		37.30		29.52		52.79
2016	28.55		35.22		44.00		56.66	a	61.73		67.18		71.77	a	73.61		62.20		49.89		44.73		23.13		51.56
2017	20.87		26.02		40.00		48.57		58.98		65.93		76.19		75.15		63.58		48.18		37.20		26.52		48.93
2018	30.42		30.83	a	40.52		48.93		65.06		65.36	a	73.24	b	72.03		61.22	a	51.24		39.16	a	33.00		50.92
2019	30.37		21.73		35.65		51.17		62.40	a	68.50	a	72.35		74.65	a	62.47		45.97		37.17		30.07	d	49.37
2020	30.21		36.43	a	42.40		50.69	a	60.02		65.58		72.81	b	75.84	f	65.43		51.10		37.64	a	29.92		49.29	a
2021	31.53	a	29.48		42.13		51.73	b	59.73		72.47		80.42		74.30	a	63.22	c	49.73		38.56	e	27.65	d	51.75
2022	21.81		27.95		44.47		46.58		55.15		64.14	b	76.03		77.31		66.15		57.31		29.35		17.60		48.65
2023	28.47	a	30.91		39.56		49.13		65.53		67.23		76.33	b	74.23		62.53		52.29		38.80		35.08		51.67
2024	27.23		39.24		43.61		51.77	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	36.69	i
Period of Record Statistics
MEAN	26.33		31.87		41.31		50.62		59.27		66.17		73.29		72.40		62.74		50.93		37.87		29.64		50.24
S.D.	5.34		4.85		2.94		2.46		2.54		2.70		2.88		2.62		2.61		2.28		3.45		3.97		1.47
SKEW	-0.98		-0.77		-0.33		0.22		0.35		0.50		-0.40		-0.31		-0.19		0.24		-0.80		-0.55		-0.09
MAX	37.18		40.19		47.95		57.11		66.21		74.18		80.44		78.44		68.91		57.31		45.05		39.02		52.98
MIN	8.68		14.67		33.42		45.60		53.40		60.95		62.52		65.07		55.52		45.94		23.46		17.60		46.62
YRS	124		128		126		121		124		126		127		125		126		128		127		121		100