Monthly Mean Air Temp (C) at Tweed-New Haven												
	J	F	M	A	M	J	J	A	S	O	N	D
1973	0.7	-0.9	6.8	10.4	13.9	20.9	23.5	24	19.6	13.8	8.4	4.1
1974	0.9	-0.2	4.9	11	14.4	19.8	23.9	23.7	19	12.3	8.8	3.2
1975	2.2	1.1	4.2	7.4	15.9	20.4	24.1	23	17.5	14.4	10.7	1.6
1976	-2.6	2.9	5	13	16.2	22.5	24.1	23.2	18.9	11.8	5.4	-1
1977	-4.6	1.8	6.9	10.4	16.4	21.9	25.4	24.8	20.3	14.1	10.2	2.8
1978	-2.9	-2.5	3.9	9.4	14.1	20.6	22.8	24	17.8	12.8	6.8	2.4
1979												
1980												
1981												
1982												
1983												
1984												
1985	-2.2	1.3	6.2	11.1	16.9	19.5	23.9	23.1	19.7	14.4	8.5	1.1
1986												
1987	-0.2	0.3	6.3	11.1	16.3	21.9	24.7	22.5	19.2	12.3	8	3.5
1988	-1.4	1.1	5.5	9.9	16.3	21.5	24.8	24.8	19.3	11.4	8.9	1.6
1989												
1990	3.7	2.9	6.1	10.4	14.8	21.5	23.8	23.7	19.5	16.4	9.1	5.2
1991	0.4	3.2	6.5	11.8	19	22.3	24.6	24.1	19	14.5	8.3	3.7
1992	1	1.7	3.6	8.9	15.6	20.4	22.4	22	19	12.1	7.2	2.5
1993	1.5	-2	3.5	10.3	17.2	21.3	25	23.9	19.2	12.4	8.3	2.4
1994												
1995	2.7	-0.7	5.9	9.4	15.2	21.1	25.2	24	18.6	15.1	5.6	-0.7
1996	-1.3	0.7	3.4	10.2	15.5	21.3	23	24	19.9	13.7	6.5	5.1
1997	0.6	4.4	5.5	10.6	14.6	21.4	24.3	22.7	19.8	13.5	6.6	2.7
1998	3	4.5	6.6	11.3	17.9	21	25.3	25.1	21.6	14.7	9.1	6.1
1999	1.1	3.2	5.4	12	17.9	23.4	26.9	23	20.1	12.7	9.5	3.6
2000												
2001												
2002												
2003												
2004	-5.1	-0.1	3.5	9	14.4	18.8	21.7	22.1	18.9	12	7.6	1.4
2005	-2.1	-0.3	1.2	9.5	12.1	20.1	22.5	23.8	20.6	13.7	8.7	1.3
2006	2.9	2.3	3.8	9.5	13.9	19.5	23.6	21.8	17.8	12.8	9.7	6.2
2007	2.6	-2.4	2.4	7.7	15	19.2	22	21.9	19.3	16.2	6.9	1.5
2008	1.3	1.8	4.6	9.9	13.7	20.7	23.8	22	20.1	12.8	8.6	2.7
2009	-3	1.6	4	10.3	14.5	18.5	22.1	23.5	18.3	12.4	10.1	2.5
2010	-0.1	1	7.7	11.4	15.7	21	25.1	23.6	20.8	14.1	7.8	1.3
2011	-1.9	0.2	4.3	9.9	15.8	20	24.5	23.1	20.2	13.1	9.7	6.5
2012	2.3	3.7	8	11.3	16.3	20.3	24.4	24.1	20	15.3	6.2	5
2013	1.8	0.8	4	9.8	14.9	20.4	25.1	22.2	18.8	14.1	7.3	1.9
2014	-1.3	-1.5	1.6	8.9	15.3	20.5	23.9	22.6	20	15.1	7.5	5
2015	-1.3	-5.8	1	8.8	15.9	18.7	23.1	23.5	20.9	12.6	9.5	8.1