FORT LEWIS, CO

Average of Minimum Temperature (Degrees Fahrenheit)

(053016)

File last updated on April 20, 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
1915	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1916	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1917	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	51.27	t	46.55		42.73		20.00	j	23.68	b	15.41	d	32.09	h
1918	6.68	c	14.26	a	25.38	b	25.37	c	30.97		49.14	b	47.38	g	47.19		39.96	b	33.30	a	18.93	c	10.27	a	27.40	a
1919	2.10		0.32		17.10	a	29.17	f	37.50	c	45.73	h	52.25	g	-----	z	41.00	g	21.72	f	15.40	e	11.29	g	14.48	g
1920	15.70	a	-----	z	-----	z	-----	z	37.04	e	50.11	l	-----	z	46.10	a	40.63		29.32		22.28	l	-----	z	33.76	g
1921	16.23		16.32		26.32		24.37		35.23	a	43.10		50.39		48.77	a	38.93		34.48	b	22.59	a	20.16		31.41
1922	5.29		12.50		18.39		23.78	c	32.48	b	44.23		49.00	a	51.17	a	42.57	b	29.84		20.00		14.00		28.60
1923	12.48		10.54	b	15.84		27.67		34.03	a	37.90	a	51.19		47.00		35.07		26.03		18.17	a	10.74		27.22
1924	-0.03		15.93		14.52		24.50		32.10		40.50		46.13		43.45		36.33		27.13		19.30		4.52		25.36
1925	0.94		13.21		19.23		27.21	a	35.39		41.83		47.94		44.52		38.20		28.65		17.33		10.83	a	27.11
1926	2.39		13.79		25.07	p	31.44	c	36.61		43.33		48.61		48.45		41.57		32.77		21.87		10.93	a	30.16	a
1927	18.10		20.25		17.77		28.47		32.68		42.63		48.55		46.45		41.31	a	30.52		23.90		8.42		29.92
1928	8.13		11.66		22.55		25.27		35.87		37.17		46.26		45.13		39.83		31.97		20.43		6.90		27.60
1929	7.03		7.72	j	19.61		24.90		33.06		40.50		51.00		49.10		40.53		31.71		16.13		14.06		29.79	a
1930	5.58		16.07	a	18.45		31.70		31.41	i	42.17		50.00		48.26		38.10		28.65		16.73		6.90		27.51	a
1931	9.10		17.43		16.68		28.67		31.84		43.37		49.26		45.77		43.23		33.29		19.10		7.77		28.79
1932	0.84		17.97		17.81		27.80		33.87		39.63		49.35		47.52		39.57		28.58		19.97		6.26		27.43
1933	5.84		-0.96		21.19		22.80		29.58		42.90		47.97		47.00		42.87		32.65		22.63		16.39		27.57
1934	14.81		22.57		25.45		29.67		40.19		40.13		50.42		51.16		38.03		32.23		20.43		14.45		31.63
1935	13.26		14.29		15.48		28.63		32.39		39.93		48.68		48.77		40.70		29.16		18.20		11.71		28.43
1936	8.00		13.66		19.81		29.13		35.42		45.23		49.84		48.90		40.07		30.90		20.59	a	14.55		29.67
1937	-2.54	c	8.71		19.00		24.03		37.26		42.14	a	49.45	b	49.10		42.20		32.48		21.97		16.87		28.39
1938	10.87		16.48	a	20.65		27.60		33.13		43.90		46.50	a	45.13		43.53		32.26		15.20		13.71		29.08
1939	13.03		0.43		18.13		28.17		33.45		42.50		48.58		48.03		44.73		27.39		22.87		14.80	a	28.51
1940	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1941	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1942	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1943	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1944	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1945	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1946	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1947	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z
1948	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	45.30	a	39.60		28.84		12.77		11.71		27.64	g
1949	7.45		5.64		17.87		26.40		31.58		39.20		46.81		42.07	a	39.03		26.06		22.23		8.19		26.05
1950	9.23		14.50		17.94		24.67		27.67	d	37.25	b	45.74		42.61		36.57		34.13		20.53		18.81		27.47
1951	10.94		12.46		19.29		26.83		32.74		34.83	a	46.23		45.61		34.63		28.90		17.97		7.94		26.53
1952	9.00		8.24		13.10		28.57		33.87		40.20		46.58		45.58		39.00		27.45		12.57		6.07	b	25.85
1953	9.29		7.46		17.90		21.17		27.31	b	38.27		46.97		43.03		35.80		27.65		18.87		2.83	b	24.71
1954	9.39		15.18		14.90	b	24.63		30.58		35.28	a	46.03		41.87		41.47		33.23		20.90		10.26		26.98
1955	6.68		1.82		14.26		23.37		30.71		35.55	a	44.29		47.34	b	37.36	b	29.97		17.53		14.26		25.26
1956	19.42		6.00		17.90		24.45	a	32.20	a	42.43		45.97		42.73	a	39.67		30.39		14.38	a	8.90		27.04
1957	14.60	a	19.79		20.89	c	25.77		34.39		-----	z	49.19		47.80	a	36.40		32.81		15.77		14.13		28.32	a
1958	9.26		15.43		13.23		23.93		36.10		42.21	a	44.61		48.39		42.03		31.65		21.63		17.10	b	28.80
1959	11.94		11.89		17.58		27.07		32.64	c	43.47		47.23		48.19		36.93		29.52		18.50		13.81		28.23
1960	4.42		2.83		18.87		26.77		31.87		42.03		48.19		47.29		43.23		30.97		21.07		11.23		27.40
1961	7.45		13.18		20.03		24.87		34.35		43.83		47.68		48.90		35.97		27.94		18.93		5.35		27.37
1962	6.58		15.89		13.45		28.77		32.00		41.77		48.00		46.06		42.57		33.90		25.00		15.65		29.14
1963	1.39		16.11		19.48		24.87		36.58		38.87		51.03		50.39		44.87		36.94		22.47		10.77		29.48
1964	6.94		5.21		13.19		23.53		33.61		38.60		50.84		46.74		40.57		30.06		17.40		9.35		26.34
1965	11.68		8.64		14.97		26.70		31.84		38.59	c	49.48		45.79	b	38.03		30.81		25.67		14.35		28.05
1966	4.52		4.68		19.97		26.10		33.58		39.74	c	51.27	a	47.31	b	40.69	a	29.79	c	23.13		11.57	a	27.69
1967	7.71		14.86		24.45		20.76	i	30.60	a	38.42	d	49.92	f	45.32	f	40.36	b	29.05	j	20.78	g	4.37	a	22.97	e
1968	5.93	c	15.64	a	17.97	a	22.89	b	30.23	a	39.76	a	49.26	d	42.77	a	35.84	e	30.34	b	19.89	c	6.47	a	26.42
1969	12.52		9.19	b	12.35		27.97	a	36.32		38.85	c	50.23	a	49.56	d	41.90	a	27.10	b	19.10		16.90		28.50
1970	12.27	a	18.64		17.70	a	20.53		32.32		39.96	b	48.93	a	49.63	a	36.31	a	25.06		18.70		11.55		27.63
1971	8.53	a	13.29		17.58		24.17	a	30.63	a	41.07		48.84		46.29		33.03		28.10		16.69	a	10.73	a	26.58
1972	10.19		17.17		24.03	a	23.97		31.46	c	42.42	d	45.94	m	45.87		38.74	c	34.16		11.53		7.23		26.07	a
1973	4.71		9.79		17.77		21.27		33.87	a	39.70		46.10		45.94		34.90		25.96	h	17.72	a	9.42		25.56	a
1974	4.23		6.22	a	20.84		21.55	a	33.93	c	44.90		46.21	b	43.39		36.72	a	33.41	b	20.39	b	11.07	a	26.90
1975	4.61		9.00	a	19.16		23.79	a	31.41	b	36.43		48.42		44.74		39.34	a	28.27	a	16.96	c	10.33	a	26.04
1976	6.77	a	18.07		17.90	a	27.62	a	35.14	c	39.43		49.69	b	46.87	a	42.97		27.19		18.93	a	9.67	a	28.35
1977	4.26		15.04	a	16.90		28.73		31.73	a	45.03		51.16		50.42		41.77		31.28	b	21.59	a	16.74		29.55
1978	11.94		10.25		23.77		28.20		32.90	a	40.67		47.90		45.29		41.33		33.55		24.07		5.35		28.77
1979	4.06		6.79		16.61		25.40		34.58		39.97		48.00	b	45.97	a	41.03	a	31.14	c	13.93		15.65		26.93
1980	14.77		15.76		16.03		25.87		33.39		41.57		49.16		47.67	a	40.41	a	29.97		20.90	a	20.42		29.66
1981	17.90		16.11		19.48		30.07		33.90		43.14	a	50.71		48.45		42.07		30.55		22.23		-----	z	32.24	a
1982	7.39		11.57		21.47	a	26.73		32.71		38.33		-----	z	-----	z	42.30		25.27	a	20.26	c	11.64	f	25.11	c
1983	12.03	b	13.26	a	20.78	d	21.42	d	30.48	h	38.55	a	48.39		50.86	b	41.54	d	31.59	b	19.61	b	12.26		28.21	a
1984	4.35		10.04	d	18.84		23.72	a	36.92	e	42.10		51.29		48.97	a	41.33	c	27.65		22.07	a	17.62	e	28.74
1985	9.40	a	8.96		21.47	a	29.60		34.38	g	42.29	b	50.81		47.52	b	39.38	f	32.03	b	19.27		10.62	b	27.20	b
1986	16.10		20.96	b	24.80	a	28.93	c	31.75	c	43.20		47.19		49.17	a	39.00	d	29.29		20.86	b	13.23		30.37
1987	8.93	a	16.29		16.23	a	28.25	b	35.73	e	41.93	b	46.39	c	47.62	b	38.15	c	32.67	a	21.71	b	11.83	a	28.81
1988	5.17	a	12.25	a	18.43	c	27.37		33.74		45.62	d	48.68		49.16		38.11	b	32.13	a	20.04	b	11.97	b	28.55
1989	6.42		13.43		24.21	b	31.12	e	32.79	g	40.30		49.21	b	46.00	c	40.08	d	28.23		17.66	a	9.61		27.84	a
1990	8.45	b	13.22	a	23.45		30.55	a	30.40	k	41.24	e	49.26	d	46.78	h	43.14	i	29.36	i	19.83	l	4.00	f	27.70	f
1991	4.39		13.30	e	18.56	f	24.80	e	30.46	g	38.68	h	47.64	f	49.68	c	41.39	b	30.62	b	17.55	a	9.44	f	25.96	e
1992	3.54	e	14.61	a	22.43	c	31.21	b	37.15	d	39.48	a	46.10	b	46.46	g	38.25	b	30.93	a	13.58	d	6.68	f	27.73	b
1993	13.17	h	13.32		19.23		25.83	g	36.21	b	37.22	g	45.03	a	48.43	c	37.81	d	28.90	a	16.52	a	10.39	c	28.43	c
1994	12.53	a	10.04	b	24.26		28.11	c	33.47	a	43.96	c	47.73	e	49.52	d	41.62	a	29.89	c	19.46	d	16.58	g	30.96	a
1995	11.89	d	20.48	c	24.08	f	24.11	c	32.29		38.52	a	45.93	c	51.61		42.59	c	27.14	b	21.21	a	13.86	b	29.97	a
1996	9.86	c	18.00	d	19.77	a	24.32	b	33.66	b	43.72	a	51.00	d	49.03	b	39.69	a	29.75	c	23.21	b	12.00	b	29.50
1997	11.29	c	11.29	d	19.23		25.79	b	37.27	a	41.79	b	48.42	g	48.69	e	44.82	b	29.43	j	19.20	e	9.86	j	28.82	c
1998	9.43	h	10.57	e	20.38	e	23.77	d	31.68	l	33.65	g	52.38	b	48.69	e	45.69	a	31.24	f	21.92	f	14.62	b	30.87	e
1999	15.43	h	18.83	e	25.31	e	27.90	i	32.65	k	40.11	u	51.66	b	50.86	c	38.73	d	29.14	b	22.19	d	10.00	f	33.82	e
2000	12.25	g	18.29	e	20.42	e	28.70	g	34.13	h	43.96	b	49.00	c	51.50	c	41.89	b	32.63	d	14.96	f	14.82	c	34.07	d
2001	10.30	a	13.52	g	21.72	b	29.32	e	35.16	f	42.17	f	50.13	h	48.31	e	40.64	e	30.92	e	16.42	k	6.75	c	26.85	e
2002	8.21	b	9.24	c	15.80	a	25.58	f	30.61	c	45.46	d	51.33	d	49.16	l	43.89	b	30.58		22.70	c	11.80	a	26.96	b
2003	18.20	a	18.88	b	20.63	a	25.65	g	36.40	a	39.07	a	51.83	b	50.97		37.57		32.17	b	20.47		12.84		30.82	a
2004	7.48		9.97		23.44	d	25.33		25.65		37.17		45.39		39.90	a	39.66	a	32.06		21.73		15.71	c	26.96
2005	20.19		19.32		21.23		28.87		35.84		40.20		49.97		48.16		43.00		33.55		21.03		12.10	b	31.12
2006	13.87	a	16.04		21.94		29.53		35.77		44.63		52.68		49.06		36.97		30.74		22.53		13.52		30.61
2007	8.68		17.82		24.84		29.40		36.90		44.20		51.77		51.58		42.50		30.74		22.63		9.84		30.91
2008	3.03		11.48		18.00		24.37		32.81		40.43		49.94		49.39		41.53		29.94		23.73		11.68		28.03
2009	11.71		16.36		23.84		25.97		41.36	i	-----	z	-----	z	-----	z	42.33		26.87		22.87		6.94		22.11	d
2010	11.26		10.46		19.42		27.93		-----	z	43.81	c	52.03		49.90		44.00		35.39		17.87		22.23		30.39	a
2011	7.74		11.32		23.58		27.69	a	32.55		40.57		52.67	a	51.35		44.07		32.19		21.90		12.45		29.84
2012	15.10		15.52		22.94		30.64	e	34.77		45.30		53.39		52.00		42.30		29.90		24.60	j	3.15	k	34.19	b
2013	-5.71		-4.00	d	13.74		-----	z	-----	z	44.71	f	52.55		49.81		45.23		27.55		24.37	c	7.82	i	25.44	d
2014	-----	z	22.27	m	24.00	h	-----	z	-----	z	43.36	s	51.84		48.81		45.73		36.68		23.10		19.00		37.53	f
2015	17.06		21.61		27.74		26.97		36.61		47.23		50.68		50.68		45.07		38.35		23.43		16.17	a	33.47
2016	13.03		18.10		25.90		29.80		36.03		48.47		50.35		49.00		42.50		34.73	a	25.97		19.00		32.74
2017	17.00		23.21		28.71		28.57		33.97		44.37		53.03		48.68		43.07		31.68		26.43		14.55		32.77
2018	15.52		17.86		22.16		30.00		37.13		44.87		53.71		50.84		45.10		35.77		19.90		12.45		32.11
2019	11.52		13.86		25.77		32.67		34.39		42.97		50.97		49.77		43.43		24.97		21.60		15.39		30.61
2020	11.65		16.24		26.87		29.77		35.71		44.83		51.03		51.48		41.57		31.16		24.00		10.94		31.27
2021	11.19		12.61		23.58		28.83		35.81		45.93		52.92	s	47.82	t	45.07		32.16		25.07		17.70	a	27.79	b
2022	12.42		12.79		22.42		29.00	o	33.90		45.73		53.90		52.06		46.53		32.62	b	16.67		16.10		31.38	a
2023	11.68		9.00		17.97		27.20		37.71		40.03		51.16		51.94		43.90		33.68		21.83		18.00		30.34
2024	14.68		18.79		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	16.74	j
Period of Record Statistics
MEAN	9.27		12.99		19.89		26.68		33.73		41.58		49.19		47.81		40.63		30.72		20.10		12.25		28.57
S.D.	4.97		5.32		3.67		2.72		2.55		2.92		2.29		2.62		2.91		2.71		3.13		4.05		1.95
SKEW	-0.19		-0.76		0.16		-0.12		-0.39		0.04		-0.08		-0.61		-0.27		0.16		-0.48		0.00		0.43
MAX	20.19		23.21		28.71		32.67		40.19		49.14		53.90		52.06		46.53		38.35		26.43		22.23		33.47
MIN	-5.71		-4.00		12.35		20.53		25.65		34.83		44.29		39.90		33.03		24.97		11.53		2.83		24.71
YRS	93		94		92		86		83		86		86		91		96		92		92		87		62