PROSSER, WA

Average of Average Temperature (Degrees Fahrenheit)

(456763)

File last updated on April 20, 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
1912	-----	z	-----	z	-----	z	52.75	n	60.97		69.30		72.19		68.55		59.65		47.29	c	43.88		35.83	a	57.21	d
1913	28.40		30.07		42.71		53.47		59.79	b	67.59	c	73.16	b	72.89	c	61.52	a	50.31		43.66	b	32.24	b	51.32
1914	39.52		37.58	b	47.89		54.12	a	62.38	a	65.00	b	74.97	a	71.89	c	59.72	g	53.54	g	42.85	d	23.21		51.94	b
1915	26.85		39.29		47.97		55.40		59.85		67.22		71.27	i	75.50		60.67		53.68		38.57	b	33.60		50.78	a
1916	20.06	g	33.79		46.38	a	52.62		56.15		63.27		66.81		69.00		60.60		48.68		33.63		26.39	c	50.66	a
1917	29.71		36.06	a	38.82		48.35		57.28	a	62.50	a	71.40	b	70.68		63.05		53.45	b	42.68	b	43.83	a	51.48
1918	37.23	a	35.27		44.73		51.07		55.45		69.78		70.75	c	66.68	a	65.10		53.60		40.20		36.61	c	52.21
1919	34.23	i	36.54		45.18		51.93		57.98		62.62	d	70.62	a	69.98		60.39	c	49.29	b	39.45		25.06	f	54.40	b
1920	28.53	a	36.03		43.98		48.32		55.71		63.12	b	73.68		69.58		60.84	a	51.00		38.68	b	37.38	a	50.57
1921	35.23	c	38.93	a	46.55		50.50		59.76		67.37		69.55		69.92		57.67		54.14	b	41.02	b	31.88	b	51.88
1922	19.95		31.76	c	41.91	b	48.32		57.52	a	70.57	a	72.76		71.33	a	63.90		52.89	c	37.50	a	26.09	h	51.67	a
1923	38.62	b	30.67	a	44.70	a	52.54	b	59.55		-----	z	73.03	a	71.77		64.80	b	52.55	a	42.97	a	37.40	g	53.12	b
1924	27.69	d	43.81		45.08	a	51.94	c	64.53		68.16	a	72.42	a	69.81		63.74	e	52.39	c	38.60	e	-----	z	54.38	a
1925	39.08		45.12		47.84	f	54.90	a	63.12	c	68.19	a	74.77		69.63	a	62.75		52.44		39.70	b	38.00	a	55.25	a
1926	35.48	a	43.96	a	49.22	a	57.33		59.80	a	69.33		74.03		70.60	b	57.62	b	54.16	c	43.42	d	32.79	e	53.98
1927	28.92	f	40.92	c	44.83	y	50.57	g	57.14	m	66.98	e	71.98		70.45		61.55	a	53.02	b	47.54	d	30.71	g	58.92	e
1928	30.33	a	37.37	c	47.70	a	51.13	g	64.12	a	66.57		75.31		69.92	a	63.17	a	53.81	b	41.08		32.29	g	54.94	b
1929	23.15	d	23.17	e	45.57	i	49.98	c	59.07	a	65.72	e	70.84		71.69		60.57	a	53.27		35.31	a	35.37	p	51.28	b
1930	20.43	q	42.40	d	46.80	a	54.39	b	57.40	b	62.38		70.96	f	71.76		63.48	a	49.10	a	40.21	f	31.90	a	53.29	c
1931	36.50	a	38.78	c	46.87	d	53.34	e	65.12	e	65.89	g	73.32		71.03	b	61.77	b	52.64	b	40.15	f	30.30	i	55.49	c
1932	31.70	f	36.04	d	47.15	e	54.07		59.16		68.83	c	69.13		70.19		63.50	a	53.92		45.31	c	30.25	k	56.73	b
1933	36.09	d	33.17	d	44.19	e	52.00	a	54.77	c	65.89	k	73.55	b	72.20	a	61.06	e	55.13	d	42.46	c	43.66	c	51.66	a
1934	40.84	b	42.52		51.20	a	60.09	a	63.37	d	69.97		75.12	a	75.58	e	61.80	b	54.68	c	45.78	a	37.43	b	56.53
1935	37.07	b	38.11		42.98	a	49.65	c	59.78	b	66.10		72.02	a	68.68		65.53		51.91	d	-----	z	33.27	a	53.19	a
1936	36.63	h	18.06	k	45.40	b	57.35		63.90	b	68.83	a	72.05		70.77		62.13		54.93	a	34.22		37.14	b	56.67	b
1937	13.86	c	32.85	h	47.28	a	51.86	b	60.35	a	66.75		74.57	a	67.69		64.53		56.47	b	45.05	b	37.23	a	53.24	a
1938	37.30	f	36.91	a	45.16	b	54.18	e	60.17	a	69.26	a	74.53	a	69.13		67.68		52.61	c	38.28		36.48	a	54.94	a
1939	37.55	a	36.43	e	46.79	c	55.27	b	62.63		65.13		72.77		71.58		64.86	a	54.12	b	40.55	a	40.56	d	54.02
1940	30.57	a	39.91	a	49.15		53.65		62.78	b	71.55		76.32	a	72.63		69.89	b	52.33	s	36.09	b	34.89	c	54.31	a
1941	34.57	b	39.06	b	49.66		55.72		59.60	a	68.16	b	78.47		70.73		60.24	a	51.68		43.39	b	37.48	c	54.06
1942	25.75	a	38.02		44.33	e	54.09	b	58.72	b	63.48	c	72.85		73.21		64.17		52.50		38.09	a	33.02	b	51.52
1943	23.96	f	38.10	d	43.26		54.48	a	56.34		63.23		72.03		68.27		65.26	a	51.45	a	39.64	b	32.48	c	53.14	a
1944	29.12	b	36.52	a	42.85	a	50.42	j	58.97	a	65.55		71.81		68.58	a	64.18		54.48		37.38	b	29.31	b	50.80	a
1945	35.60	b	40.45		42.89	l	49.32		61.48	a	65.50	b	72.39		71.08		61.03		53.45	a	40.79	a	32.97		53.10	a
1946	36.19	w	40.07		45.69		52.77		61.61	c	-----	z	71.24	d	70.35		62.04	b	48.92		37.41	c	37.56	d	52.77	b
1947	30.39	d	40.72	a	48.52	a	55.38		65.23	a	64.89	b	71.35		68.32	a	64.38	a	53.77	a	41.91	a	36.17	g	54.99	a
1948	33.24	d	32.96	e	42.42		48.81	c	57.72	b	70.30		68.95		69.00	b	62.02		50.16	b	-----	z	29.57	b	51.38	a
1949	16.16		33.50		44.71		54.92		63.53		65.88		70.03		69.82		64.48		48.16		45.20		36.73	c	51.09
1950	16.23	a	33.34		43.47		49.97		58.77		66.10		72.92		71.87		64.05	a	51.39		42.58		39.63		50.86
1951	34.77		37.77		40.67	a	53.67	a	60.92		67.37		72.63		70.50		64.55		51.10		40.50	g	29.98		53.08	a
1952	27.02		38.72		44.63		55.48		61.48	a	66.28		72.82		70.87		65.17		55.16		34.07		35.61		52.28
1953	46.23	e	43.20		46.69		51.40		57.67	b	62.66	a	72.13		71.03		64.85		53.76		44.71	a	39.70	c	54.50
1954	32.62	a	39.73	b	42.60	a	52.36	a	60.76	b	64.13		70.89		68.20	i	62.40		49.76		46.37		34.66		50.57	a
1955	32.00	b	37.23		41.06		47.72		57.86	b	67.84	a	71.69	d	72.02	d	63.87		53.83	a	34.05		31.47		50.89
1956	32.47		27.59		44.98		55.15		64.10		64.60		74.63		71.10		64.18		51.85		38.20		37.11	h	53.53	a
1957	18.84		37.07		44.76		53.73		65.03		68.17		69.89		67.94		65.27		50.69		40.62		40.55	a	51.88
1958	39.56		45.93		44.60		51.50		66.66		70.88		76.45		74.26		63.40		53.83	a	41.85		37.34		55.52
1959	34.56		38.32		46.39		53.74	a	57.50		66.87	g	74.22	d	68.13		61.88		53.32		38.17		34.23		50.95	a
1960	24.21		38.98		45.48		53.27		57.10	e	67.40		75.74		68.57	a	64.07		55.09	c	42.82		29.47		51.85
1961	37.43	a	46.26	a	46.75	a	52.70		59.85	a	71.13		74.94		75.42		61.38		50.90		36.82		36.34		54.16
1962	33.32		38.82		43.05		55.68		57.10		65.57		71.64	f	69.38	e	65.41	b	52.87		45.45		38.69		51.40	a
1963	31.82	q	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	31.37		37.64		45.27		52.95		60.21		66.77		72.70		70.63		63.04		52.44		40.61		35.03		52.66
S.D.	7.29		4.55		2.50		2.65		2.92		2.55		2.19		1.98		2.28		2.05		3.61		4.31		1.74
SKEW	-0.64		-0.64		-0.08		-0.00		0.26		-0.03		-0.01		0.65		0.08		-0.59		-0.16		-0.35		0.73
MAX	46.23		46.26		51.20		60.09		66.66		71.55		78.47		75.58		69.89		56.47		47.54		43.83		56.53
MIN	13.86		23.17		38.82		47.72		54.77		62.38		66.81		66.68		57.63		47.29		33.63		23.21		50.57
YRS	41		48		46		47		50		46		48		50		50		49		46		40		19