PROSSER, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(456763)

File last updated on May 1, 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	41.06	n	44.90		53.00		55.61		52.94		42.63		34.93	b	35.53		28.19		43.47	d
1913	21.35		21.75		31.16		38.90		43.84		51.93		54.65		54.74		43.33		37.26		35.63		27.53	a	38.51
1914	31.90		30.57		34.06		39.52	a	44.39		47.21	b	53.87	a	49.82	c	42.79	b	40.76	f	32.90	a	15.32		38.40	a
1915	19.65		29.89		33.94		39.03		44.87		48.33		52.93	a	55.23		42.37		37.94		29.83		25.55		38.30
1916	12.33	g	26.66		34.42		36.63		41.10		46.93		49.77		48.65		41.90		29.81		23.83		19.71	c	36.31	a
1917	19.61		27.00		26.48		36.10		42.73	a	45.17		50.37	a	50.06		45.10		34.07	a	30.07		34.30	a	36.76
1918	28.97	a	24.50		30.55		33.13		38.90		51.40		53.39	c	49.42		45.83		38.42		28.40		29.26		37.68
1919	24.13	h	27.29		31.55		36.30		42.32		45.83	a	51.39		50.23		42.66	a	31.83	b	28.73		17.12	e	36.84	a
1920	21.47	a	25.72		30.81		34.67		39.13		46.52	a	54.26		51.39		45.73		38.58		28.21	a	28.43	a	37.08
1921	27.23	a	30.82		33.97		36.60		43.32		50.87		49.81		50.61		40.67		36.73	a	27.52	a	24.35		37.71
1922	10.65		22.35	b	29.26		34.00		41.13	a	51.20		52.90		54.00	a	43.53		38.65		30.57		18.71	c	35.58
1923	31.10	a	20.93		29.00		37.00		44.55		-----	z	55.84		54.26		45.77		38.17	a	30.40		26.32		37.58	a
1924	18.27	a	32.17		30.45		34.64	b	45.45		50.33		53.90		51.58		44.76	a	36.10	b	28.71	b	-----	z	38.76	a
1925	27.87		34.50		32.67	a	38.60		46.52		50.30		55.23		51.23	a	46.20		36.48		28.97	a	31.60	a	40.01
1926	29.90		32.36		32.71		40.43		43.65		51.10		54.68		51.84		39.55	a	39.13	a	33.14	a	22.69	b	39.26
1927	21.33	a	31.85	b	33.80	p	35.12	d	41.87	h	50.69	a	52.68		52.84		46.70		38.58		36.20		19.16		38.51	b
1928	24.81		26.66		35.03		36.89	b	44.61		50.70		56.65		49.58		42.43		39.26		30.83		25.89	d	38.61
1929	17.81	d	10.72	c	30.79	g	35.17		42.23		50.70	c	51.42		50.32		41.67		35.32		20.76	a	27.64	i	35.61	b
1930	10.53	n	31.89	a	33.74		38.32	b	43.00	b	46.37		50.59	d	52.26		46.41	a	33.45		30.13		27.81		39.45	a
1931	29.61		28.00		34.10	a	38.14	b	46.38	b	50.58	d	54.48		50.60	a	45.52	a	36.83	a	28.37	c	21.82	c	38.70
1932	22.27	a	26.26	b	35.81		39.70		44.03		50.38	a	51.84		51.74		43.76	a	39.39		34.34	a	20.11	d	38.30
1933	26.17	b	22.11	a	31.76	b	34.93		39.80	a	47.60	j	54.66	b	53.42		46.56	c	38.79	c	32.83		35.94		37.91	a
1934	30.73	a	29.64		35.53	a	43.59	a	47.62	b	55.57		59.63	a	60.75	c	43.33		42.74		37.14	a	30.65		43.08
1935	28.47	a	27.75		29.65		34.96	b	43.07	a	49.63		54.32		49.32		46.17		34.67	a	27.03		28.17	a	37.77
1936	30.43	a	7.95	i	31.32		41.37		48.13	a	53.77		54.00		51.68		43.57		36.68		21.80		28.26		40.09	a
1937	5.50	c	20.76	g	34.48		38.17		43.68		51.97		56.74		50.06		47.43		41.10		36.27		30.68		39.64	a
1938	29.16		30.00	a	32.83	a	38.80		42.65		52.40		56.19		49.68		49.67		39.32	c	25.73		26.55		39.42
1939	28.90		25.17	d	33.00	c	37.79	b	46.45		49.23		54.29		52.16		46.77		37.86	b	25.93	a	31.97	b	39.13
1940	24.68		31.64	a	34.81		38.30		45.31	b	55.53		61.97		55.87		56.90		41.67	s	27.30		26.83	a	41.74	a
1941	28.16		28.12	b	32.48		39.90		44.80	a	54.33		62.97		55.55		45.30		38.87		31.40		28.84		40.89
1942	18.84		27.89		28.39	c	36.97	a	44.32		47.36	b	54.61		54.32		44.63		35.90		29.60		24.71		37.30
1943	14.96	c	29.08	c	29.81		39.79	a	41.68		47.80		53.48		50.61		44.72	a	38.10		32.30		25.30	a	37.30
1944	21.61		25.71	a	28.55		36.70	g	42.48		49.10		52.90		49.06		44.37		37.00		27.53		22.29		36.42	a
1945	26.45		28.50		32.29	g	33.37		45.61		48.47		53.10		52.45		43.50		37.26		31.93		26.19		38.80	a
1946	24.25	w	28.29		33.29		37.67		44.07	c	-----	z	53.86	b	52.48		45.53		35.23		26.86	a	27.93	a	38.52	b
1947	19.17	b	27.70	a	33.65		39.73		48.52		50.57		54.58		50.55		48.33		43.97		33.87		28.81	e	39.95
1948	24.70	a	25.31	c	29.32		35.38	a	44.87	a	54.57		50.94		52.52	b	45.37		35.69	b	-----	z	22.17	a	38.26	a
1949	6.29		23.79		33.06		37.57		46.48		47.93		51.58		51.97		48.23		33.61		36.70		27.96	c	37.10
1950	8.16		24.04		32.61		36.03		41.55		52.37		54.68		53.55		45.72	a	41.77		34.83		33.94		38.27
1951	27.48		28.07		28.81		35.17	a	44.74		51.30		54.19		52.84		48.37		40.29		31.67	f	22.97		39.48	a
1952	21.16		29.97		32.42		38.47		46.61		51.87		54.48		53.48		47.43		38.87		25.47		31.10		39.28
1953	38.96	e	32.39		33.97		38.43		44.00		48.90		54.58		55.16		47.37		40.06		35.47		30.90	a	41.68
1954	24.93	a	33.04		29.65		39.53		46.29		50.47		54.58		53.17	h	47.57		36.87		37.57		26.87		38.85	a
1955	27.10		27.14		29.06		34.60		44.03		52.90		58.37	d	54.96	d	48.83		42.27	a	26.80		24.84		39.24
1956	25.84		19.69		34.10		38.93		49.65		49.67		57.52		54.26		47.93		40.32		31.07		29.65	h	40.82	a
1957	10.94		28.11		34.42		39.53		50.84		53.10		53.19		51.32		49.07		40.71		29.70		32.90	a	39.49
1958	31.81		36.71		31.87		38.47		50.13		56.50		59.35		55.81		48.13		37.27	a	31.13		31.00		42.35
1959	27.10		29.61		33.55		38.41	a	43.39		53.25	f	56.70	d	52.03		49.57		39.55		26.13		27.26		38.48	a
1960	17.26		28.90		32.61		40.00		43.38	e	51.27		58.19		53.29		47.37		41.29	c	32.43		24.48		39.21
1961	30.77	a	38.00	a	36.84		39.93		46.42		55.07		58.16		59.03		46.00		37.52		25.87		28.87		41.87
1962	24.45		29.79		30.77		40.00		45.23		50.27		54.35	e	54.58	e	48.17	a	41.06		36.73		33.26		40.72
1963	24.43	q	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	23.57		27.88		32.18		37.65		44.46		50.67		54.60		52.52		45.71		37.87		30.42		26.78		39.02
S.D.	7.23		4.57		2.31		2.24		2.56		2.68		2.80		2.48		2.87		2.79		4.09		4.61		1.75
SKEW	-0.75		-0.91		-0.33		-0.04		0.24		0.08		0.80		0.96		0.86		-0.40		-0.11		-0.39		0.49
MAX	38.96		38.00		36.84		43.59		50.84		56.50		62.97		60.75		56.90		43.97		37.57		35.94		43.08
MIN	5.50		10.72		26.48		33.13		38.90		45.17		49.77		48.65		39.55		29.81		20.76		15.32		35.58
YRS	46		48		47		49		50		47		51		50		51		49		49		48		30