SAINT HELENS RFD, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(357466)

File last updated on April 23, 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
1976	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	54.62	b	52.03		43.48		39.00		33.70	a	44.57	g
1977	27.66	b	36.89		36.52		40.17		44.03		50.70		52.35		58.00		51.37		43.45		38.00		37.87		43.08
1978	37.06		-----	z	40.55		42.33		44.70	a	53.50		55.90		56.39		51.87		43.52		32.70		30.55		44.46	a
1979	25.58		35.14		39.19		41.50		47.61		50.13		55.39		55.29		-----	z	-----	z	37.57		38.68		42.61	b
1980	28.58		34.46	a	36.57	c	41.36	b	45.07	b	48.72	a	55.17	g	51.79	b	50.14	a	43.39	c	41.60		37.15	d	41.71	a
1981	35.41	d	35.37	i	38.23	e	42.00	a	46.30	a	51.22	c	53.23	e	57.00	b	51.00		42.10		40.15	c	36.19	d	44.80	a
1982	33.53	a	35.62	b	35.10		37.00	a	45.10		53.34	a	52.55	b	54.03	a	50.77		45.20	a	35.10		36.23	e	42.80
1983	36.78	h	38.82		43.00	c	39.59	a	47.30	a	51.87		54.37	a	56.32	c	47.90	a	42.37	a	42.56	c	31.21	b	45.03	a
1984	32.89	d	37.00	c	41.12	e	40.66	a	44.23	e	48.07	b	54.16		53.03	a	50.04	f	44.00	b	38.87		31.94		42.36	a
1985	28.31	b	32.78	a	36.84		43.37		46.07	a	52.36	b	56.55		53.97	a	48.96	e	41.66	b	30.64	e	27.24	f	42.86	a
1986	36.37	d	37.73	b	44.46	c	39.67	f	46.79	c	53.71	b	54.52	f	57.21	b	-----	z	44.30	d	39.61	b	33.44	d	43.74	c
1987	32.41	b	38.33	d	40.76	b	43.88	f	48.23		52.76	a	55.86	c	56.48	b	52.76	a	45.38	b	41.07	b	34.82	c	45.35	a
1988	33.36	c	37.39	f	39.21	b	44.21	f	46.83	b	52.15	c	56.66	b	56.33	a	50.80	e	51.29	g	40.54	d	35.39	c	45.70	c
1989	36.21	b	27.85	a	37.11	c	44.30	c	47.92	f	53.71	f	55.30	d	55.30	d	52.26	c	45.83	a	41.92	f	35.50	e	43.29	c
1990	37.30	d	34.08	b	40.97		45.26	c	46.14	b	52.86	a	58.50	c	58.58	e	56.83	g	43.78	d	39.61	b	27.86	b	44.08	a
1991	32.10	b	37.72	c	35.64	c	41.11	c	46.03	b	51.52	e	56.18	c	56.64	c	54.19	d	44.45	i	42.48	e	35.41	b	44.46	a
1992	37.71	g	38.42	j	41.60	a	46.14	b	49.44	d	54.83	f	58.50	e	56.96	e	48.14	h	46.27	e	39.38	i	34.00	d	47.56	e
1993	31.19	d	31.88	b	38.67	d	43.31	d	51.24	b	52.31	d	54.37	d	56.59	b	51.89	c	46.52	b	31.44	c	33.00	d	43.53
1994	37.71	j	29.42	d	38.90	b	44.04	b	47.19	d	50.29	f	55.13	a	54.90		53.55	a	41.00	d	33.37	c	35.11	c	43.26	b
1995	35.72	b	37.81	a	36.58	e	39.93	b	47.59	b	50.87		56.41	b	52.92	g	55.78	c	44.11	c	41.58	d	35.73	e	43.83	a
1996	34.45	b	29.12	c	36.77		42.55	a	46.03	b	50.68	e	57.77	a	56.34	b	50.82	b	43.76	b	38.69	a	35.54	c	43.54
1997	34.23		35.08	c	37.10	a	39.72	a	47.64	c	50.50	f	55.67	g	57.21	c	52.21	f	44.83	g	38.74	c	33.47	a	40.40	d
1998	36.13		38.24	c	40.11	d	40.62	a	45.85	e	51.43		57.04	d	54.96	d	53.25	f	44.73	e	40.58	f	34.04	e	44.31	b
1999	35.79	c	35.42	b	35.39	c	38.48	a	38.07	c	48.35	d	53.37	d	58.56	f	52.30	j	42.74	h	37.84	e	32.60	a	39.48	c
2000	30.38	b	33.35	c	33.79	c	40.04	b	43.58	e	51.53		52.90		54.77	e	52.92	d	42.75	g	34.74	c	31.45	b	41.77	a
2001	33.13	a	30.88	b	35.23	a	38.81	c	43.55	i	48.61	b	52.56	d	53.79	b	50.45	h	43.79	g	38.35	g	35.00	g	41.86	e
2002	35.10	k	34.16	i	35.93	p	35.29	b	43.73	e	45.67	c	53.12	e	50.58	e	49.42	k	41.92	g	34.77	d	33.89	d	42.43	e
2003	36.10	b	33.48	c	39.04	h	39.83		43.14	b	51.29	b	54.45	b	53.79	c	49.48	e	49.11	c	33.93	p	34.58	e	44.52	b
2004	31.26	l	35.79	o	37.04	d	40.81	d	42.33	g	49.29	f	54.42	g	54.50	c	46.89	k	44.48	h	32.75	j	32.48	h	44.11	i
2005	29.00	i	28.96	c	37.00	d	38.77	h	48.93	d	47.78	g	55.54	c	55.25	g	45.89	l	47.83	m	35.23		32.62	b	39.71	f
2006	38.44	f	31.61	e	36.50	c	41.96	b	-----	z	53.74	k	55.03		53.29		49.23		41.25	g	38.74	g	33.32	c	42.99	e
2007	28.28	f	36.33	d	36.89	l	36.58	k	43.26	d	48.89	b	56.27	a	54.07	c	49.04	b	41.82	c	35.89	c	33.30	h	45.70	d
2008	30.63	a	33.59	b	32.81	d	36.42	d	45.25	g	47.80	e	54.52	h	55.35		51.00		47.62	w	40.46	f	31.73	e	39.92	d
2009	30.45		30.14		32.69	e	36.61	b	44.20	a	51.44	c	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	37.59	f
2010	-----	z	-----	z	-----	z	39.60		44.00	a	47.92	e	53.73	e	55.92	e	51.93		44.33	a	36.87		35.61		45.55	c
2011	34.16		31.12	c	37.90		35.97	a	43.39	c	49.50	b	53.14	b	54.80	f	54.08	f	44.11	c	37.14	b	32.15	e	39.86	b
2012	32.44	d	34.50	e	36.67	d	40.46	d	45.15	e	50.71	i	56.09	h	54.82	i	51.53	k	44.33	g	41.54	b	36.74	d	38.21	e
2013	30.50	e	35.55	f	37.08	e	39.16	e	47.92	f	54.29	m	55.22	m	57.47	l	53.11	k	41.47	p	36.85	d	29.30	d	34.58	g
2014	32.77	i	32.00	h	38.74	l	40.25	j	46.60	p	50.54	q	56.33	s	59.29	n	53.10		48.50	u	38.32	h	39.29	j	53.10	k
2015	35.88	g	41.53	k	39.87	p	39.61	g	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
Period of Record Statistics
MEAN	32.93		34.05		37.79		40.57		45.70		50.69		55.05		55.29		51.43		44.10		37.73		33.96		43.24
S.D.	3.09		3.20		2.73		2.64		2.43		2.04		1.77		1.78		1.86		1.80		3.26		2.41		0.36
SKEW	-0.55		-0.28		0.37		-0.03		-0.52		-0.55		0.24		-0.54		0.23		0.70		-0.45		-0.39		-0.29
MAX	37.30		38.82		44.46		46.14		51.24		53.71		58.50		58.58		55.78		49.11		42.56		38.68		43.54
MIN	25.58		27.85		32.69		35.29		38.07		45.67		52.35		50.58		47.90		41.00		30.64		27.86		42.80
YRS	28		29		33		32		31		28		29		31		23		23		29		33		4