PROSSER, WA

Average of Maximum 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	90.74		-----	z	-----	z	-----	z	-----	z	-----	z	90.74	k
1926	-----	z	52.25	d	63.90	b	74.28	a	73.23		86.12	f	93.25	g	87.58		72.83	a	66.56	f	51.83	a	39.23		64.39	d
1927	34.30	h	47.92	b	56.81		67.46	b	70.35		82.79	a	90.77	a	88.94		72.74	g	65.12	f	54.41	h	38.78	h	72.15	e
1928	-----	z	-----	z	-----	z	62.17	f	78.32	i	80.40	e	-----	z	-----	z	-----	z	66.85	e	49.95	h	40.96	g	73.62	j
1929	28.74	h	32.54		59.27	e	63.66	a	74.50	c	79.35	d	89.22	d	92.00	e	75.56	e	69.39	c	48.40	e	41.03	b	65.90	a
1930	21.97	a	49.50	d	62.93	c	72.20		73.71	c	79.95	i	92.59	d	92.74	h	78.86	b	62.93	b	46.87	g	36.90	a	61.29	c
1931	42.19		48.71		58.00		67.87		80.53	a	82.04	b	92.77		91.61		78.78	c	65.37	a	47.54	b	33.79	b	65.77
1932	37.00	g	42.44	d	56.22	d	67.50	b	73.19	d	86.22	g	85.70	h	87.26		81.30		65.70	a	53.38	a	40.07	a	63.01	c
1933	44.30	a	40.12	c	55.22	d	66.50	f	69.10		82.37		91.20	f	91.31	e	72.73		70.03	a	50.13		48.55		62.39	b
1934	50.30	h	54.27	b	65.11	c	75.70	g	78.56	d	83.93	a	90.07	b	89.83	b	76.15	c	66.32		53.79	f	43.59	d	71.98	c
1935	44.32	l	46.50		53.72	b	61.57	g	73.70	h	81.35	j	88.10	a	84.06		82.08	f	62.96	f	42.27		35.44	d	58.35	f
1936	41.14	c	30.93	a	56.24	f	72.12	e	79.79	g	83.21	f	89.40	a	88.74	d	78.56	c	71.13	a	43.77		43.52	b	62.14	c
1937	23.37	d	40.04	a	57.80	a	62.03		74.10	b	80.03	a	90.65		84.45		78.34	a	68.45	b	51.37	c	41.68		62.69
1938	40.67	a	42.54		55.23	a	66.87		75.10		84.00		93.61		86.03		83.50		64.87	a	48.07		44.16		65.39
1939	43.93	b	45.21		58.10		70.20		77.52		79.40		90.47	a	90.35		78.77		64.97		51.57		45.77	a	66.35
1940	35.36	c	45.90		60.84		65.70		78.16		85.90		87.87	a	85.19		78.86	b	64.77		41.48	a	39.77		64.15
1941	37.70	a	48.00		63.55		67.90		71.29		79.34	a	92.26		85.10	a	71.47		62.19		52.72	a	43.41	b	64.58
1942	30.03	a	45.39		57.71		66.87		70.23		77.59	a	89.48		90.65		81.93		68.19		44.43		39.87	a	63.53
1943	31.81	d	45.54		54.57	a	66.77		68.83	a	76.13		89.10		84.23		83.07		63.68		45.73		37.79	b	62.27
1944	37.87		45.38		56.45	b	64.20		73.77		79.53		88.73	a	85.77		81.43		70.90	a	45.80		35.00	a	63.74
1945	41.34	b	49.54		52.97		63.10		73.35		79.37		90.84		88.97		75.67		68.26		47.90		37.60	a	64.08
1946	44.45	b	50.59	a	55.83	a	65.37		76.84		77.66	a	87.23		87.29		75.20		61.33	a	46.86	b	45.23	e	64.49
1947	39.82	c	51.62	b	61.74		69.23		81.00		77.97		86.87		84.65		78.40		61.48	b	48.37		40.00		65.10
1948	38.97		41.96	a	53.52		60.73		68.13	a	82.97		84.71		83.17	a	76.10		63.39		49.27		36.61		61.63
1949	25.03		40.96	a	54.45		70.40		77.81		80.90		86.00	a	85.68		79.20		61.87		53.17		44.19		63.31
1950	23.03		39.21		52.00	a	61.70		71.65		76.50		88.20	f	88.23		81.10		60.19		48.57		42.77		58.63	a
1951	41.03		45.75		50.97		68.32	e	73.48		80.17		89.35		86.90		79.13		61.87		46.93	a	36.48		63.37
1952	31.00		46.14		54.63	a	68.87		74.13		77.60		88.94		86.81		81.90		72.00		42.60		40.30	h	65.87	a
1953	50.43	a	51.46		57.03		61.50		69.10		73.20		87.94		83.91	h	80.37		66.39		52.33		46.90	a	63.33	a
1954	37.84		43.93		52.00		62.87		73.59	i	74.93		84.52		81.61		75.70		61.48		53.07		40.68		60.78	a
1955	35.97		44.93		49.84		57.40		67.84		81.23		79.58	e	86.90		78.83		63.97		40.27		36.42		60.26
1956	37.81		32.10		53.71		69.17		75.29		77.23		89.77		86.10		80.30		62.13		43.57		41.32		62.37
1957	24.32		45.36	c	52.32		64.33		75.10		81.73		84.61		82.23	a	80.10		59.35		49.77		45.87		62.09
1958	44.16		52.44	a	53.61		60.93		80.10		83.97		90.81		90.68		76.20		67.06		49.93		40.87		65.90
1959	39.29		43.93		56.71		66.10		68.52		79.10		88.32		82.39		72.53		64.45		47.77		39.52		62.39
1960	29.42		47.76		54.84		63.53		69.45		81.83		92.35		81.90		78.47		66.39		53.10		34.16		62.77
1961	41.35		52.82		55.29		63.43		70.23		85.93		89.26		90.00		74.37		63.55		46.67		43.13		64.67
1962	40.35		46.89		51.58		68.23		66.06		80.21	b	86.52		82.16		78.90		62.81		51.93		43.23		63.24
1963	35.32		46.57		57.68		59.60		72.48		79.90		82.13		86.19		82.23		67.00		52.37		35.45		63.08
1964	-----	z	51.86		54.48		62.67		70.52		77.87		86.94		80.97		75.27		64.35		46.57		37.10	a	64.42	a
1965	38.47	a	51.36		55.48		66.53		72.06		79.67		87.90		84.71		74.60		68.68		51.83		41.74		64.42
1966	41.26		48.86		56.00		67.50		75.65		76.90		84.32		86.71		80.43		64.58		52.73		45.87		65.07
1967	48.97		55.04		55.71		57.63	c	72.74		83.60		90.53	a	92.81		84.93		66.00		51.20		43.29		66.87
1968	43.45		51.62		59.84		63.47		72.58		80.30		90.03		81.52		76.87		60.84		48.60		37.84		63.91
1969	26.68		38.71		55.90		62.23		76.03		84.70		86.71		84.32		77.07		61.10		50.77		37.68		61.83
1970	36.03		48.29		55.65		59.73		72.97		84.70		89.26		87.29		71.93		62.90		49.17		39.26		63.10
1971	46.29		50.79		50.45		63.00		74.77		74.13		88.58		91.97		71.87		62.42		50.27		40.38	b	63.74
1972	40.00		42.93		58.10		61.07		73.84		79.73		85.35		87.39		72.90		65.13		47.63		36.06		62.51
1973	38.61		45.75		58.29		66.13		74.13		79.33		88.29		85.81		75.97		62.81		45.30		44.69	b	63.76
1974	36.48		50.07		55.81		62.43		68.58		83.60		83.97		86.58		81.13		65.77		50.00		44.58		64.08
1975	40.84		42.15	a	52.26		58.70		71.45		78.10		89.35		81.23		79.63		62.42		49.63		41.81		62.30
1976	42.90		47.17		53.32		61.23		73.35		76.53		85.06		80.19		80.20		65.81		51.20		40.03		63.08
1977	29.16		49.04		54.84		69.83		67.87		84.83		85.06		90.74		71.83		63.71		48.37		41.70	a	63.08
1978	37.00		45.50		58.00		61.70		69.77		82.20		86.32		83.39		73.30		66.45		41.50		39.07	a	62.02
1979	21.45		44.11		59.06		63.23		75.90		82.73		88.32		86.03		81.17		67.35		40.53		42.77		62.72
1980	30.52		39.07		54.68		66.80		71.16		74.27		85.32		82.65		76.73		64.35		47.87		43.45		61.41
1981	41.68		46.82		60.06		64.50		71.19		75.80		85.03		90.39		78.27		63.87		52.53		39.42		64.13
1982	37.42		47.74	a	55.94		60.90		71.87		82.03		85.10		86.00		75.03		61.45		45.70		40.48		62.47
1983	45.68		48.57		58.43	a	64.37		75.87		77.93		82.35		86.77		75.38	a	63.61		52.90		31.17	b	63.59
1984	39.30	a	46.14		57.45		-----	z	68.19		77.17		89.10		86.58		73.63		61.35		47.17		35.03		61.92	a
1985	29.67	a	40.86		55.61		67.73		74.84		81.30		93.42		83.29		70.80		64.10		35.27		26.40	a	60.27
1986	40.52		47.07		59.13		63.87		-----	z	-----	z	-----	z	92.87		71.79	a	67.65		49.17		35.03	a	58.57	c
1987	37.23	a	-----	z	58.16		70.00		78.00		86.27		84.32		87.65		82.70		68.65		52.38	a	37.48		67.53	a
1988	37.84		52.62		57.03		65.57		72.71		78.20		88.52		87.23		78.60		71.58		52.13		37.48		64.96
1989	43.87	a	34.36		51.29		-----	z	71.55		82.40		85.68		82.68		-----	z	64.29		52.30		36.27	a	60.47	b
1990	45.61		46.79		58.94		69.20		70.58		79.10		90.03		86.42		83.97		-----	z	54.47		35.37	a	65.50	a
1991	36.77	a	53.19	a	53.39	c	64.97		69.29		75.10		88.16		88.97		81.47		65.90		47.41	a	43.10	a	63.98
1992	-----	z	-----	z	-----	z	66.40		78.10		86.23		85.45		87.81		74.43		65.94		45.87		37.43	a	69.74	c
1993	29.68		37.04		-----	z	62.00		77.19		77.37		78.94		83.58		79.83		66.48		44.87		38.97		61.45	a
1994	44.87		41.18		59.77		-----	z	74.58		77.23		91.29		87.06		-----	z	-----	z	-----	z	-----	z	68.00	e
1995	-----	z	-----	z	-----	z	-----	z	74.10		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	74.10	k
1996	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	79.87		67.25	c	49.96	b	40.07	b	59.29	h
1997	41.81		48.85	a	57.42		63.87		77.35		80.40		88.90	a	91.50	a	79.21	a	65.55		51.97	a	42.33	a	65.76
1998	44.23	a	50.61		-----	z	65.40		73.97		83.10		95.97		91.77		-----	z	65.81		54.43		43.47	a	66.88	b
1999	47.93	a	51.62	b	57.42		65.50		72.68		81.83		89.10		91.16		81.90	a	65.90	a	56.53		46.07	a	67.30
2000	41.42		47.66		57.23		70.03		74.84		83.60		90.71		91.16		78.14	a	65.55		44.41	a	35.26		65.00
2001	38.94		46.54		59.52		64.13		78.32		80.27		90.39		92.84		84.40		66.84		52.50		43.16		66.49
2002	46.26		50.70	a	53.13	a	65.97		71.58		83.57		93.29		87.61		81.30		64.58		49.87		41.87		65.81
2003	45.81		49.54		60.40	a	64.20		73.13		85.33		94.67	a	90.45		81.90		70.58		47.37		39.23		66.88
2004	34.23		45.55		62.84		68.90		73.13		82.87		91.87		89.87		78.82	b	67.32		51.13		44.29		65.90
2005	39.55		50.71		61.61		65.43		75.35		79.13		91.16		91.55		78.10		65.65		46.40		34.94		64.97
2006	47.90		46.59	a	54.94		64.37		75.26		81.47		94.61		89.32		80.73		65.42		50.27		34.87		65.48
2007	37.42		45.36		58.00		63.67		75.35		81.43		93.84		87.13		79.67		62.71		49.90		42.23		64.73
2008	37.78	d	49.79		54.94		60.23		74.23	a	80.13		91.06		-----	z	78.83		64.89	c	51.00		-----	z	64.29	b
2009	-----	z	-----	z	-----	z	-----	z	73.70	a	83.37		-----	z	89.84		81.33		59.37	a	52.03		32.27	a	67.42	e
2010	-----	z	49.39		57.80	a	63.20		-----	z	77.37		89.59	b	87.87		76.34	a	64.00	a	46.37		39.72	b	65.17	b
2011	44.21	b	46.79		54.71		57.87		68.97		78.10		84.73	a	90.13	a	83.24	a	63.65		50.80		37.83	a	63.42
2012	45.78	d	-----	z	55.77	a	-----	z	-----	z	-----	z	91.61		91.30	a	81.47		65.84		50.52	a	43.74		65.75	d
2013	34.19		50.79		56.61		-----	z	73.45	b	78.83		93.94		89.42		79.67		62.96	c	45.90		36.47	a	63.84	a
2014	40.47	a	42.00		57.74		65.17		75.32		-----	z	-----	z	-----	z	79.60		69.32		49.73		42.29		57.96	c
2015	40.97		52.93		62.23		65.40		77.06		90.10		93.29		89.90	a	78.14	a	70.81		48.03	a	42.81		67.64
2016	39.26		51.32	a	57.00		72.54	b	77.30	a	83.83		87.48		90.00	a	76.61	b	61.03		54.97		35.53	a	65.57
2017	26.58		38.74	a	54.80	a	61.43		74.45		81.24	a	93.16		92.94		79.53		63.03		50.43		35.97		62.69
2018	43.74		49.15	a	54.97	a	63.79	b	79.89	d	82.00	a	94.10	b	89.61		78.34	a	62.97	a	49.00		42.74		65.86
2019	41.06		30.43		45.07	a	65.81	c	74.60	a	84.34	a	87.60	a	89.63	a	76.40		60.52		48.33		37.66	b	61.79
2020	47.00		51.97		55.58		66.90		74.06		81.14	a	90.10		90.48		80.57	b	67.17	a	50.93	a	41.55	b	66.45
2021	44.60	a	42.50		57.65		67.37		76.15	d	89.00		96.48		89.00		77.83	a	64.67	a	51.43		41.94		66.55
2022	35.14	c	49.00	c	58.23		57.07		65.97	b	78.86	a	93.65		94.10		82.40		71.42		41.33		29.71		63.07
2023	40.52		44.86		51.77	a	60.66	a	80.25	c	83.37		92.81		89.50	a	77.00		65.13		48.10		42.16		64.68
2024	35.19		46.18	a	56.90	a	64.67	o	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	46.09	i
Period of Record Statistics
MEAN	38.39		46.21		56.41		64.92		73.56		80.67		88.97		87.52		78.24		65.11		48.82		39.80		64.04
S.D.	6.59		5.22		3.34		3.63		3.37		3.30		3.49		3.31		3.34		2.92		3.74		4.04		1.69
SKEW	-0.79		-1.02		-0.04		0.10		-0.01		0.19		-0.33		-0.26		-0.35		0.37		-0.85		-0.50		0.05
MAX	50.43		55.04		65.11		74.28		81.00		90.10		96.48		94.10		84.93		72.00		56.53		48.55		67.64
MIN	21.45		30.43		45.07		57.07		65.97		73.20		78.94		80.19		70.80		59.35		35.27		26.40		60.26
YRS	86		92		91		86		90		88		89		91		91		92		92		92		66