PROSSER, WA

Average of Average Temperature (Degrees Fahrenheit)

(456768)

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
1925	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	73.16		-----	z	-----	z	-----	z	-----	z	-----	z	73.16	k
1926	-----	z	41.86	j	48.92	g	56.64	b	58.02	a	69.07	g	73.83	h	69.68		57.29	d	52.87	h	41.86	b	30.31	b	52.30	f
1927	27.98	h	39.13	b	44.00	a	50.66	b	54.76		66.03	a	70.60	a	71.05		59.13	g	51.72	f	44.12	i	28.04	h	56.61	e
1928	-----	z	-----	z	-----	z	47.27	f	60.30	i	62.83	g	-----	z	-----	z	-----	z	54.06	e	40.61	h	33.02	g	54.06	k
1929	22.52	h	22.55		45.21	e	49.22	a	57.68	c	63.24	e	70.38	e	72.29	e	60.23	f	54.18	c	34.83	f	33.88	f	54.34	d
1930	13.10	a	40.90	h	48.43	c	54.35	c	57.29	c	63.25	j	71.87	e	72.93	j	63.02	c	48.71	b	39.25	n	31.87	e	48.58	d
1931	35.74		38.30		45.52		52.81	a	63.23	a	66.20	b	73.65		71.95		63.24	c	52.00	a	38.25	b	27.05	b	52.33
1932	29.40	g	33.20	d	45.76	d	53.21	b	57.81	d	67.22	g	68.39	h	69.58		63.03		53.52	b	43.97	a	30.38	a	50.05	c
1933	35.12	a	30.82	c	43.41	d	50.65	f	55.00		65.67		71.84	f	72.46	e	58.72		55.95	a	42.02		41.25	a	50.04	b
1934	41.48	h	42.37	b	50.21	c	59.09	g	61.94	d	66.74	a	71.33	b	71.59	b	60.61	c	55.03		45.56	f	37.17	d	57.44	c
1935	37.18	l	37.73		41.28	b	47.13	g	56.41	h	64.38	j	70.65	a	66.95		64.58	f	49.40	f	34.63		31.52	d	47.13	f
1936	35.84	c	22.46	b	43.50	f	55.54	e	62.56	g	67.69	f	71.05	a	69.72	d	60.96	e	54.53	a	33.05	a	34.56	e	48.64	c
1937	13.66	i	31.22	c	45.40	e	49.33		57.59	b	66.00	a	72.90		67.10		62.52	a	54.68	c	43.00	e	35.68		53.22	a
1938	34.33	a	35.18		43.55	b	52.29	a	57.87		67.15		74.65	a	67.15		67.00		52.22	a	36.62		34.79		51.90
1939	36.05	b	34.98	a	46.06		53.70		61.02		63.45		72.13	a	71.95		63.00		51.60		39.62		38.22	a	52.65
1940	29.68	c	38.14	a	48.08		52.10		60.87		67.27		70.92	a	68.44		64.36	b	53.52	a	34.22	a	32.76		51.70
1941	32.05	a	37.80		48.34		53.18		57.32		63.95	a	74.39		70.07	a	58.30		50.77		42.68	b	36.00	b	52.07
1942	24.50	a	36.30		43.05	a	52.03		57.02		62.07	a	71.76		72.56		64.10		53.30	a	37.53		33.55	a	50.65
1943	24.19	e	37.18		41.48	a	53.26	a	54.28	a	61.08		70.48		66.84		64.50	a	51.65		39.40	a	31.59	b	49.66
1944	29.40	a	36.27	a	42.43	b	50.42		58.11		64.18		70.90	a	68.29		64.42		55.67	a	38.73		30.73	a	50.80
1945	35.66	b	40.04		42.53	a	48.16	b	58.95		62.67		71.55		70.61		60.23	b	54.11	c	38.96	c	30.63	e	51.18
1946	34.62	g	38.96	c	43.27	e	50.93	b	60.71	b	63.29	a	70.10		70.16		60.13		47.93	d	36.44	c	37.70	f	54.19	b
1947	29.40	g	39.46	e	47.63		54.12	b	64.19		63.70		69.74		66.97		63.50		52.36	b	40.32		34.10	b	54.19	a
1948	30.79	c	32.71	e	40.92	a	47.58		56.32	a	68.27		67.37		67.28	a	60.75		49.66		39.80		28.77		49.18
1949	15.76		32.39	a	43.21		52.87		61.56		63.68		67.75	a	68.19		64.07		47.85		44.67		36.02		49.83
1950	14.89		31.05		41.87	a	48.17	a	55.61		64.12		70.22	f	70.35		63.67		50.63		41.43		37.90		47.25	a
1951	33.66		36.57		39.27		51.78	e	58.61		65.20		71.06		68.90		63.35		50.65		38.53	a	29.11		50.56
1952	25.39		37.78		43.00	a	52.80		59.23		63.78		71.02		69.32		64.65		56.50		33.85		34.98	h	52.48	a
1953	43.12	a	41.07		44.55		48.93		54.81		59.40		69.32		68.59	h	63.57		53.48		43.40		38.10	b	50.89	a
1954	29.60		37.54		39.58	a	49.32		58.66	i	60.85		67.45		65.84		60.98		49.10		45.22		32.97	a	48.95	a
1955	30.76		35.29		38.18		45.47		54.45		65.32		65.15	e	68.13		62.82		51.58		32.82		29.84		48.32
1956	31.48		24.62		43.11		53.53		61.85		62.25		72.27		69.13		63.47		50.97		37.00		34.45		50.35
1957	17.24		36.44	c	42.79		51.23		62.08		66.25		67.39		65.83	a	64.57		49.61		39.85		38.23		50.13
1958	37.18		44.26	a	42.34		49.12		64.63		69.17		74.02		72.34		61.47		52.34		40.93		35.29		53.59
1959	32.35		36.07		43.73		51.75		54.87		64.33		70.63		65.76		59.90		51.58		36.90		32.68		50.05
1960	22.18		37.66		42.66		50.75		55.90		65.12		73.16		66.00		62.30		53.11		42.35		28.90		50.01
1961	35.11		43.96		45.03		50.58		57.19		69.10		72.21		73.31		59.08		50.13		35.92		35.02		52.22
1962	31.92		38.02		40.60		54.03		54.52		64.04	b	69.39		67.45		63.53		51.84		43.78		37.61		51.39
1963	27.45		38.66		45.45		49.08		58.32		65.23		67.15		69.94		67.12		54.55		43.24	a	31.37	a	51.46
1964	-----	z	39.34		42.44		49.18		56.13		64.17		70.73		66.11		60.47		51.31		39.48		30.32	a	51.79	a
1965	32.69	b	41.55		42.37		52.83		57.24		64.92		71.55		70.37		59.98		55.47		44.43		34.37		52.32
1966	35.21		39.12		44.44		52.93		60.19		62.98		68.76		70.73		65.57		52.21		43.93		38.98		52.92
1967	40.82		43.41		44.05		46.02	c	58.31		68.37		72.62	a	74.39		67.93		53.40		41.47		34.60		53.78
1968	35.23		41.78		47.98		49.83		58.16		64.67		72.52		67.06		61.88		47.97		40.45		29.34		51.41
1969	20.02		30.82		44.21		49.93		61.44		69.53		68.47		66.19		62.08		47.40		40.33		32.50		49.41
1970	29.10		39.50		43.97		47.30		57.37		68.03		70.87		68.16		57.10		49.00		39.48		31.47		50.11
1971	36.98		39.27		39.58		49.05		59.35		59.98		70.26		72.32		55.82		48.08		40.20		32.41	b	50.28
1972	31.11		34.97		45.90		47.62		60.32		65.50		70.00		70.71		57.72		50.52		39.73		27.27		50.11
1973	30.13		37.46		45.18		51.30		59.00		64.40		70.77		67.95		61.25		50.18		38.57		37.50	b	51.14
1974	28.26		39.77		44.16		50.23		54.87		66.97		68.10		68.77		63.07		50.23		41.17		36.11		50.98
1975	32.34		33.28	a	40.61		45.65		56.35		62.95		73.13		65.21		61.48		50.03		39.07		34.34		49.54
1976	34.55		36.50		40.94		48.98		58.19		61.43		68.58		66.29		64.00		50.72	a	40.05		30.77		50.08
1977	23.84		38.80		43.50		55.24	a	54.85		68.72		68.42		74.19		58.67		49.84		38.48		34.88	a	50.79
1978	31.56		38.44	a	46.71		50.35		55.62	a	66.60		70.48		68.31		60.00		50.79		33.40		29.97	a	50.19
1979	14.84		35.96		46.06		50.48		60.44		65.93		70.95	a	69.65		64.35		54.21		34.03		35.71		50.22
1980	22.67	a	33.36	a	42.97		53.47		58.00		61.10		68.58		65.65		62.03		50.29		40.42		36.73		49.60
1981	36.27		38.00		47.15		50.62		57.23		61.80		67.98		72.13		61.77		49.74		41.40		31.82		51.33
1982	29.00	b	37.17	b	43.50	a	47.27		57.56		67.10		68.73		69.40		60.75		49.19	b	36.63		33.05		49.95
1983	37.77	a	40.34		47.86	b	50.37		59.74		62.43		67.19		70.89		59.38	a	50.19	b	44.38	a	25.20	c	51.31
1984	32.64	b	38.67		46.98	a	-----	z	55.22	a	63.48		70.71		69.47		59.33		48.06		39.92		28.15	a	50.24	a
1985	26.84	b	31.59		43.15	a	53.64	a	60.63		66.07		75.61		67.77		57.91	a	50.57	a	26.97	a	22.43	a	48.60
1986	33.93	c	39.52	b	48.62	a	50.12		-----	z	-----	z	-----	z	74.74		59.47	a	54.00		41.37		30.83	a	48.07	c
1987	31.86	b	-----	z	46.97		55.97		62.63		68.88		69.31		70.39		65.18		53.52		42.38	a	31.58		54.42	a
1988	31.47		41.14		45.08		53.43		58.42		64.68		71.48		69.48		62.10		57.73		44.07		32.18		52.60
1989	36.74	b	26.68		42.79		-----	z	58.37		67.68		68.97		68.53		-----	z	52.00		44.07		32.10	a	49.79	b
1990	39.31		37.46		46.02		55.45		57.31		65.45		74.06		71.63		67.53		-----	z	44.70		27.33	b	53.30	a
1991	29.10	a	42.00	c	43.39	c	51.77		57.00		62.05		71.66		72.89		64.83		51.92		41.20	b	37.10	b	52.08
1992	-----	z	-----	z	-----	z	53.92		62.13		70.35		70.52		70.74		60.05		53.68		39.75		30.57	b	56.86	c
1993	23.60		30.91		-----	z	50.37		63.39		63.43		64.68		67.73		62.52		52.95		33.90		34.77	a	49.84	a
1994	38.10		34.50		46.94		-----	z	61.10		63.12		73.15		69.85		-----	z	-----	z	-----	z	-----	z	55.25	e
1995	-----	z	-----	z	-----	z	-----	z	60.45		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	60.45	k
1996	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	60.53		51.07	c	38.23	b	30.61	c	45.11	h
1997	32.27		38.96	a	46.13		50.71	a	63.50		66.55		73.65	a	75.90	b	65.00	a	52.27	a	42.46	c	33.71	b	53.43
1998	35.00	b	40.84		-----	z	51.83	a	60.48	a	68.74	a	79.32		74.32		-----	z	50.45		43.38	b	34.11	d	53.85	b
1999	39.64	c	40.42	b	45.03	a	51.22	a	57.40	a	67.31	a	72.61		74.40	b	64.04	c	51.41	b	45.24	a	37.24	f	55.34	a
2000	32.98	a	37.84		45.18	a	54.65		60.06		68.00	a	73.60		72.34		62.23	b	50.82		33.20	b	29.56	f	53.72	a
2001	31.73	a	34.54	a	45.24		49.80	b	61.72	b	64.27		73.08		74.32	a	65.18	b	51.52	c	41.39	b	33.18	a	52.16
2002	35.81	e	36.30	c	40.16	c	53.00		59.47		69.97		77.58		72.60	b	65.81	a	51.39		40.90		37.27	a	53.35
2003	39.82		40.61	a	49.98	a	52.97		60.13		71.30		78.35	a	74.97		67.37		58.32		37.62	a	34.37	a	55.48
2004	29.88	b	37.88		50.97		55.35		61.26		69.48		77.24		76.26		65.34	b	55.53		41.40	a	36.95		54.79
2005	33.08		39.02		49.97	a	53.62		63.89		65.78	a	76.17	a	75.68		64.25		54.76		39.50		28.47		53.68
2006	40.66		37.48	a	44.84		52.78		61.60		68.82		78.98		73.71		65.93		53.32		42.57	a	29.68		54.20
2007	30.52		38.89	a	48.40	a	51.67	a	61.26		67.66	a	78.90	a	72.06		65.10	a	51.84		40.21	a	33.83	e	53.36
2008	30.00	e	41.03		44.25	a	48.10		62.53	b	66.02		75.82		-----	z	64.36	a	52.40	e	43.35		-----	z	52.79	b
2009	-----	z	-----	z	-----	z	-----	z	59.65	a	69.46	b	-----	z	73.98	c	65.71	a	48.80	c	41.90		25.16	b	54.95	e
2010	-----	z	41.58	c	45.70	a	52.03		-----	z	63.32	b	74.03	b	70.53	b	60.85	c	53.32	a	38.02	a	34.23	e	53.36	b
2011	35.83	b	34.91	f	41.06	m	44.60	e	56.33	a	63.02		67.26	f	74.36	b	68.12	a	53.16	c	38.98	b	29.08	g	54.30	d
2012	34.71	n	-----	z	45.00	h	-----	z	-----	z	-----	z	75.77	c	73.80	a	66.24	a	53.05		42.88	a	35.90		57.94	f
2013	28.90		38.77	b	45.29		-----	z	60.83	b	67.13		77.69		74.19		67.48		51.02	c	37.52		27.55	a	52.40	a
2014	34.17	a	34.32		46.32		53.37		61.63		-----	z	-----	z	-----	z	66.23		58.16		39.47		35.98		47.74	c
2015	35.06		43.25		50.31		52.72		64.53		76.38		78.60		75.03	a	63.45	a	58.50		38.74	a	36.16		56.06
2016	33.68		42.11	a	47.06		58.98	b	64.02	a	69.88		73.66		74.35	a	63.02	b	52.60		46.47		27.05	c	54.41
2017	21.37		31.57	a	45.80	a	50.17		61.05		67.69	a	77.21		76.69		65.90		51.05		41.58		30.56		51.72
2018	37.87		38.67	a	43.82	a	51.80	b	66.26	d	67.95	a	77.17	b	74.02		62.93	a	51.48	a	39.80		36.52		54.02
2019	34.87		23.88		35.08	a	54.22	c	62.03	a	69.22	a	73.23	a	74.85	a	64.13		48.02		38.12		32.00	b	50.80
2020	38.89		40.57		44.48		53.30		61.21		67.72	a	74.65		74.66		66.38	b	54.32	a	41.55	a	34.84	b	54.38
2021	37.63	a	34.39	a	45.36	f	53.73	q	63.06	o	79.71	p	79.65	g	74.53		64.26	a	53.48	a	43.42		34.07	c	48.83	e
2022	28.46	e	37.29	d	47.08	k	46.30		54.79	b	66.21	a	78.11		78.26		67.48		58.52	a	33.75		23.44		52.06	a
2023	33.55	a	35.82		40.98	a	49.45	a	65.95	c	69.65	c	74.31	g	73.41	d	63.79	b	51.05	k	34.64	p	31.94	m	54.07	d
2024	27.33	e	41.38	y	44.39	v	52.91	s	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	27.33	k
Period of Record Statistics
MEAN	31.34		36.86		44.48		51.35		59.24		65.73		72.00		70.77		62.88		52.14		39.87		32.77		51.59
S.D.	6.29		4.49		2.91		2.71		2.93		2.92		3.31		3.11		2.77		2.55		3.49		3.69		1.78
SKEW	-0.96		-1.26		-0.20		-0.13		0.21		0.42		0.37		0.12		-0.26		0.48		-0.82		-0.41		0.50
MAX	43.12		44.26		50.97		58.98		66.26		76.38		79.32		78.26		68.12		58.52		46.47		41.25		56.06
MIN	13.10		22.46		35.08		44.60		54.28		59.40		64.68		65.21		55.82		47.40		26.97		22.43		48.32
YRS	82		88		85		85		89		86		86		91		90		91		90		86		57