FOSTER DAM, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(353047)

File last updated on April 26, 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
1969	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.35	d	38.45		37.90	j
1970	37.42		36.71		37.65		37.40		43.77		50.67		49.97		47.61		44.70		40.39		38.70		34.42		41.62
1971	33.30	d	35.39		34.48		38.70		44.19		46.80		50.50	a	52.90		46.30		40.71		37.80		34.23		41.28
1972	32.00	a	34.86		39.20	a	37.00		44.10		47.87		50.77		50.74		44.17		39.35		40.50		29.39		40.83
1973	32.23	a	36.68		37.40	a	39.67		43.00		48.73		49.65		45.97		46.57		41.63	a	38.90		38.61		41.59
1974	28.71		34.25		36.45		38.90		42.23		48.27		51.97	a	50.52		45.80		37.90		39.63		37.55		41.01
1975	36.65		35.54		35.03		35.30		43.42		46.90		52.23		49.19		44.93		45.87		37.60		36.06		41.56
1976	33.61		32.62		34.00		38.10		41.93	a	43.70		49.29		51.81		48.24	a	39.52		38.63		31.71		40.26
1977	27.03		36.11		35.55		38.53		41.84		47.87		48.48		53.65		47.83		42.94		38.68	b	39.23		41.48
1978	38.52		39.04		39.10	a	39.77		42.39		50.73		51.45		51.90		49.30		39.55		31.53		30.58		41.99
1979	23.97		36.39		37.97		41.33		43.74		46.93		50.19		50.61		48.83		45.26		35.27		37.48		41.50
1980	29.52		37.00		36.94		41.23		43.13		47.97		50.35		46.97		45.93		40.81		40.10		37.65		41.47
1981	35.97		36.64		38.10		40.93		45.32		48.23		49.84		51.87		47.13		40.71		38.73		38.00		42.62
1982	33.39		34.19	a	35.16		36.72	a	40.48		50.50		50.32		50.39		46.73		42.81		35.13		34.32		40.85
1983	37.13		39.25		40.97		39.17		44.42		48.30		52.87		52.45		45.03		41.58		42.23		32.55		43.00
1984	32.42		36.21		40.16		40.27		42.52		46.24	a	48.87		49.29		45.87		42.74		38.86	a	31.65		41.26
1985	28.75	c	30.86		33.03		41.47		43.66	b	47.17		51.00		48.03	a	44.27		39.90		31.73		26.74		38.88
1986	36.97	a	37.89	a	39.87		38.50		44.61		51.17		48.59	b	51.45		46.33		42.32		39.73		35.35		42.73
1987	32.68		36.22	a	38.29		40.40		45.87		47.97		51.55		47.74		45.93		37.42		40.17		35.58		41.65
1988	33.74		33.55		36.68		40.27		43.47	a	48.67		49.94		47.13		44.03		46.26		41.37		33.61		41.56
1989	35.06		26.89		38.19		42.47		44.39		49.07		50.58		50.73	a	46.14	a	41.67	a	38.27		32.80	a	41.35
1990	36.06		31.61		37.42		42.00		43.35		50.27		52.83	a	53.07	b	49.10		41.97	a	39.69	a	27.57	a	42.08
1991	29.35		38.68		35.48		40.00		42.93	a	46.10	a	51.35		51.10		45.40		38.87		40.20		36.45		41.33
1992	35.74		38.21		38.48		43.97	a	44.52		50.83		51.71		48.26		46.10	a	43.90		38.52	a	34.63	a	42.91
1993	29.83	a	31.48	a	39.59	b	42.28	a	47.16		49.30		50.87		50.81		44.86	b	43.17	a	30.24	a	33.97		41.13
1994	35.97		33.64		37.24	b	41.58	d	45.16		46.77		49.80	a	49.60	a	48.00		40.87		33.74	c	35.90		41.52
1995	36.80	a	38.46		36.97	b	39.67		44.35		48.63		53.13		48.90	a	51.37		42.43	a	42.87		36.93	a	43.38
1996	36.68		32.11	b	37.43	a	41.72	a	43.10		46.60		52.35		50.13		45.43	b	43.10		38.23		37.10		42.00
1997	34.58		34.57		37.63	a	40.63		46.55		47.93		51.20	a	52.55		50.59	a	43.19		41.45	a	32.39		42.77
1998	39.30	a	39.61		38.87		39.63		45.63	a	48.10	a	55.00	b	50.10	a	47.87		42.32		41.87		33.06		43.45
1999	35.27	a	37.00	a	35.37	a	37.86	a	41.37	a	47.83		49.13		52.90	a	43.27		38.97		41.87		35.77		41.38
2000	33.74		37.45		34.90	a	40.57		45.23		48.62	a	49.23		47.57	a	47.60		41.66	b	33.03		35.77		41.28
2001	34.48		32.89	a	36.87	a	38.47		42.66	b	44.97		49.76	b	50.73	a	45.50	d	41.43	c	39.29	b	35.86	b	41.07
2002	35.35		34.74	a	33.46	c	38.46	b	40.81		46.52	e	49.79	c	46.27	a	44.53		38.23		36.43	b	37.93	b	40.21
2003	38.58		33.39		41.00	c	39.55	a	43.13	a	47.11	b	49.66	b	49.69	b	47.03		46.52		36.32	b	36.59	b	42.38
2004	35.21	c	35.83		38.21	b	39.27	d	45.39		49.14	b	51.22	d	53.33	a	47.43		43.19		35.21	b	35.06		42.38
2005	33.93	a	29.81	a	38.87	a	39.34	a	46.14	b	46.47		50.13	a	48.16		42.66	a	44.06		35.60		33.67	a	40.74
2006	37.20	a	31.17	d	34.52	b	37.50		41.46	c	48.61	b	50.19	e	46.27	a	43.61	b	36.97		37.03	a	31.13		39.64
2007	27.23	a	33.07		35.93	a	36.77		39.35	e	45.07	c	51.77		47.68		42.10		39.70	a	32.31	a	33.23		38.68
2008	28.07	a	31.25	a	32.72	b	33.24	e	42.48	d	42.07	b	47.45	b	-----	z	42.08	d	39.15	d	37.58	d	31.00	d	37.01	a
2009	29.75	c	30.84	c	33.20	f	36.00	d	-----	z	48.33	c	51.26		49.23		48.52	e	40.00		37.00		29.10		40.00	b
2010	39.65	e	37.30	a	35.19		38.04	b	42.16		47.10		49.65	e	49.23		48.73		42.84		38.63		37.13		42.14
2011	34.23		32.64		37.90		36.41	a	41.32		47.63		47.45		48.97		48.97		44.45		35.93		28.77		40.39
2012	32.42		33.93		33.45		40.83		40.42		46.17		50.23		48.81		43.23		41.06		41.13		36.74		40.70
2013	31.26		34.14		37.94		40.77		43.77		48.87		49.94		54.40	a	51.97		39.61		36.63		27.65		41.41
2014	31.68		35.21		39.47	a	40.80		47.00		47.76	a	54.13	a	53.70	a	49.67		48.19		39.00		38.52		43.76
2015	34.87		37.21		40.84		38.57		46.30	a	51.53		53.90		51.71		45.57		46.23		34.50		37.26		43.21
2016	36.71		38.07		40.16		42.03		45.42		48.87		50.61		49.58		44.60		46.87	a	44.50		32.65		43.34
2017	30.42		35.57		41.06		40.57		46.13		50.43		50.52		52.87		51.80		42.55	b	42.10	a	31.48		42.96
2018	38.29		34.33	a	36.48		40.80		46.87		47.60		51.32		52.48		46.27		42.61		36.30		36.16		42.46
2019	33.84		32.92	b	32.87		41.47		44.03		46.40		50.87		52.84		51.33		36.84		34.30		35.39		41.09
2020	39.00		33.03		34.32		39.63		45.52		49.10		51.84		50.32		50.03		41.71		36.93		34.45		42.16
2021	36.84		36.32		33.33	a	35.97		42.87		52.00		52.58		53.77		47.30		43.65		41.07		36.52		42.68
2022	33.06		30.75		38.39		36.83		42.23		49.07		53.35		53.48		50.07		44.90		32.63		33.35		41.51
2023	34.74		30.79		32.45		38.27		46.55		46.63		51.52		54.39		49.13		45.06		37.47		37.83	a	42.07
2024	36.19		38.24		37.16		37.36	e	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.24	h
Period of Record Statistics
MEAN	33.92		34.77		36.97		39.33		43.77		48.00		50.82		50.45		46.77		41.96		37.83		34.42		41.67
S.D.	3.48		2.79		2.37		2.08		1.87		1.89		1.56		2.29		2.50		2.63		3.12		3.11		1.08
SKEW	-0.64		-0.38		-0.16		-0.43		-0.10		-0.37		0.35		-0.11		0.22		0.17		-0.37		-0.67		-0.43
MAX	39.65		39.61		41.06		43.97		47.16		52.00		55.00		54.40		51.97		48.19		44.50		39.23		43.76
MIN	23.97		26.89		32.45		33.24		39.35		42.07		47.45		45.97		42.08		36.84		30.24		26.74		38.68
YRS	55		55		54		55		53		54		54		53		54		54		55		55		52