CHATHAM, MA

Average of Minimum Temperature (Degrees Fahrenheit)

(191386)

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
1972	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	59.97		57.00		44.00		38.07		33.06		46.42	g
1973	25.48		25.57		35.39		39.93		46.52		56.37		60.45		62.81		56.27		48.97		38.47		33.61		44.15
1974	28.16		25.21		31.26		40.17		45.74		53.57		61.23		62.42		57.43		43.84		39.00		32.45		43.37
1975	30.52		26.75		29.61		36.33		47.94		54.83		61.58		61.71		55.50		49.71		43.63		30.10		44.02
1976	21.65		27.59		32.53	a	40.67		47.94		57.37		61.32		60.81		55.87		45.81		33.73		22.26		42.29
1977	18.03		23.43		34.52		39.10		47.94		54.17		61.19		61.65		55.53		47.77		41.47		29.32		42.84
1978	23.71		22.18		28.84		37.20		45.94		55.00		58.97		62.68		52.70		46.23		40.07		29.48		41.92
1979	26.94		17.93		33.26		38.83		49.97		54.13		60.03		59.13		55.57		46.30	a	43.40		32.55		43.17
1980	26.32		22.31		30.10		40.50		47.68		54.40		62.16		63.48		57.07		46.48		36.00		24.03		42.54
1981	15.87		29.46		30.52		41.07		47.00		57.30		62.90		61.03		55.80		46.03		39.60		30.19		43.06
1982	17.68		26.36		31.16		35.77		47.03		53.30		62.06		59.97		56.20		47.81		39.96	f	35.48		42.98	a
1983	28.57	a	29.33	a	34.65		40.30		46.94		55.47		62.87		62.06		59.31	a	49.26		40.19	d	28.39		44.78
1984	25.97		31.83		27.52		38.33		47.97		56.03		60.10		62.97		54.03		49.16		39.53		33.94		43.95
1985	20.04	d	27.33	a	31.67	a	-----	z	47.03		54.23		60.00		60.52		56.83		48.55		42.93		26.77		43.26	a
1986	25.77	a	25.46		30.84		40.40		-----	z	54.21	b	60.55		-----	z	-----	z	-----	z	-----	z	-----	z	39.54	f
1987	26.19		22.89		31.65		39.87		46.03		55.73		59.45		-----	z	57.00		44.93	c	-----	z	31.77		41.55	b
1988	23.39		26.83		31.45		39.34	a	47.19		53.93		61.26		64.23		55.40		44.94		39.77		27.83	a	42.96
1989	28.00		25.57		32.06		38.00		-----	z	57.10		60.94		60.74		56.97		47.77		37.73		18.39		42.12	a
1990	31.29		28.11		32.23		39.10		46.06		55.33		62.03		63.65		57.07		51.06		40.23		34.37	a	45.04
1991	26.71		28.46		34.45		41.17		50.13	a	57.60		-----	z	63.16		55.80		50.23		41.28	a	30.28	b	43.57	a
1992	-----	z	26.66		29.45		36.27		45.10		55.73		59.03		-----	z	55.67		46.23		-----	z	31.68		42.87	c
1993	27.68		22.14		30.39		39.40		48.32		56.17		62.26		60.97		57.07		46.42		39.73		30.84		43.45
1994	19.55		23.46		32.20	a	40.80		46.55		56.90		63.55		61.65		56.83	a	48.71		43.74	c	34.60	a	44.04
1995	-----	z	23.70	e	-----	z	-----	z	45.34	b	55.62	a	62.97	a	63.17	a	56.00	e	52.07	a	38.31	d	26.97	b	47.13	c
1996	25.59	b	24.96	c	27.79	c	37.93	a	45.10	a	55.77		60.10	a	60.69	b	56.80		47.63	a	35.72	a	35.69	b	42.81
1997	23.63	a	30.04	a	30.39	c	37.74	c	46.45		55.39	b	63.97	b	62.23	a	57.67	c	46.97	a	37.67		30.33	a	43.54
1998	30.47	a	32.00	b	34.10	a	40.90	a	48.94		54.73		62.86	b	61.55	b	57.37		48.36	c	39.14	a	34.62	b	45.42
1999	25.50	a	29.12	c	-----	z	39.43		49.52		58.70		65.61	c	62.52		58.78	c	45.62	b	40.07	c	33.39		46.20	a
2000	21.21	b	27.74	b	35.70	a	41.19	c	47.89	c	57.36	b	60.83	b	62.61		-----	z	48.14	b	39.10	a	-----	z	44.18	b
2001	26.75	c	28.40	w	32.86	q	39.07	a	49.07	a	59.62	a	61.43	c	63.80	a	57.62	a	49.41	b	42.17	a	36.39		48.53	b
2002	31.77		29.15	b	33.00	a	-----	z	47.71		55.55	a	63.80	a	65.42		59.88	f	48.07	b	38.60		29.73	a	44.28	b
2003	20.57	a	22.96		29.03	a	37.00	a	46.32		54.40		63.97		63.29		58.27		47.10	a	41.40		31.53	a	42.99
2004	16.13	a	24.89	a	32.00		39.20		48.58		56.03		60.29		61.97		-----	z	49.46	c	39.79	a	31.08	e	41.77	a
2005	24.57	a	26.89		27.94		40.60		45.13		56.52	a	62.81		64.42		61.13		50.94		41.50		29.77		44.35
2006	32.26		26.25		30.65		41.97		49.10		58.31	a	64.94		64.29		58.30		48.39		45.97		35.58		46.33
2007	28.39		20.14		29.77		38.13		50.00		57.97		63.65		63.57	a	60.53		53.47	a	38.53		29.19		44.45
2008	28.03	a	27.52		31.74		40.83		48.10		59.77		66.19		62.74		61.93	a	46.59	i	37.63		30.39		44.99	a
2009	20.55		25.07	a	31.06		39.29	m	48.81	d	54.12	d	61.03		64.42		57.30		46.03		44.57		28.39		43.76	a
2010	24.23		26.43		36.43	a	42.50		50.32		58.76	a	64.87		62.65		59.63		49.16		39.67		27.74		45.20
2011	23.48		23.89		31.00		40.83		48.03		56.67		65.16		63.23		59.63		51.52		43.73		34.35		45.13
2012	28.61		29.86		36.42		42.67		50.58		58.80	o	65.71		64.77	a	58.83		51.00		39.73		35.35		45.78	a
2013	25.47	a	26.43		32.13		39.30		48.38	b	57.87		65.94		62.45		56.30		46.81	j	36.80		29.65		43.70	a
2014	21.71		24.50		25.65		38.43		47.42		55.73		60.58		59.87		59.57		51.58		37.80		36.23		43.26
2015	22.87		16.75		27.55	b	39.63		50.74		55.10		62.65		64.81		62.03		48.94		43.83		41.65		44.71
2016	28.39		27.79		36.16		39.73		49.03		57.00		63.71		66.48		61.03		51.35		42.03		31.42		46.18
2017	31.03		30.11		28.39		42.57		48.19		56.93		62.19		62.16		59.23		55.32		39.37		27.87		45.28
2018	25.03	b	30.96		32.30	h	38.25	b	49.29		55.93		61.73	a	65.19		60.63		47.52		37.07		30.45		45.64	a
2019	24.42		24.61		29.68		40.33		46.77		55.77		64.86	b	63.74		58.20		50.74		36.80		30.57	a	43.87
2020	30.19		30.55		35.19		38.20		46.84		57.18	b	63.97		65.00		59.57		50.94		41.47		33.10		46.02
2021	29.07	a	28.00		31.52		-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	-----	z	29.53	i
Period of Record Statistics
MEAN	25.26		26.15		31.53		39.52		47.75		56.08		62.33		62.67		57.63		48.48		39.93		31.12		44.04
S.D.	4.13		3.31		2.59		1.66		1.53		1.58		1.94		1.65		2.06		2.47		2.58		3.94		1.18
SKEW	-0.44		-0.60		0.11		-0.23		0.10		0.39		0.26		-0.01		0.26		0.37		0.16		-0.52		0.26
MAX	32.26		32.00		36.43		42.67		50.74		59.77		66.19		66.48		62.03		55.32		45.97		41.65		46.33
MIN	15.87		16.75		25.65		35.77		45.10		53.30		58.97		59.13		52.70		43.84		33.73		18.39		41.92
YRS	47		48		45		44		46		47		47		46		45		46		45		47		30