Monthly Mean Temperatures Records
The following table lists the mean of the daily mean temperatures(F) at Brookhaven National Laboratory since 1949.
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
1949	36.1	35.6	38.4	49.1	57.8	68.1	73.9	71.4	61.2	57.4	42	34.2	52.10
1950	38	28.9	33.1	43.3	53.4	64.2	70	67.4	59.8	53.8	43.4	32	48.94
1951	32.2	31.8	37.7	47.4	57	63.7	70.7	68.6	62.4	53.4	40	45	50.83
1952	32.4	31.9	36.8	48.6	55.1	67.7	74.3	70.1	62	49.6	42.6	34.9	50.50
1953	34.1	34.8	38.9	47.1	58.3	65	70.7	68.3	63.3	65	43.2	37.5	52.18
1954	26.5	34.6	37	47.5	53.5	66	69.5	67	61	55.5	40.5	32	49.22
1955	27.6	30	37.5	48.6	58.5	63.2	74.9	71.8	60.5	54.4	40.1	24.7	49.32
1956	28	32.6	33.2	42.1	52.6	65.1	68.5	68.7	59.3	59	41.8	36.1	48.92
1957	23.7	32.9	38.2	48.2	56.6	69.3	71.5	66.6	63.4	51.6	45.3	36.8	50.34
1958	29.8	25.5	37	47	53	61.3	72.1	68.7	61.2	50.2	42.4	24.3	47.71
1959	27.7	27.6	35.7	47.2	58.2	64	70.4	71.8	65	54	42.7	34.8	49.93
1960	30.5	34.2	31	47.5	57.6	66.1	68.7	68.9	60.1	50.1	44.3	27.3	48.86
1961	23.3	29.5	36.5	44.7	54.2	66	70.9	70.3	69	54.5	42.9	32.5	49.53
1962	29.9	29.9	37.2	45.7	56	65.4	66.8	67	58.6	50.6	39.2	28.1	47.87
1963	28	25.9	39.3	47.1	55.2	66.4	69.9	67.3	59.3	55.8	46.4	26.7	48.94
1964	30.2	27.4	37.4	43.8	59.2	64.5	71.3	65.9	61.6	50.7	42.8	35	49.15
1965	25.5	29.1	35.7	43.8	59.5	64.8	68.5	68.5	62.8	50.9	40.7	34.2	48.67
1966	27.8	30.1	37.7	42.5	52.8	66	72.4	70	60.8	48.6	43.4	31.2	48.61
1967	32.9	24.7	32.1	44.2	50.2	65.3	70.8	69.1	59.8	49.9	38.3	32.8	47.51
1968	24.3	24.8	37.6	46.7	53.3	64	71.4	69	64.1	50.2	42.4	29.8	48.13
1969	27.9	29.6	34	47.1	55.5	63.7	68.4	71.6	62.2	51.2	40.9	30.8	48.58
1970	21.7	28.4	34.5	46.3	57.5	66.3	72.3	71.4	64.6	52.8	44.2	32.3	49.36
1971	24	30.8	37	42.7	54	65.5	69.2	68.5	66.1	58	41	37.1	49.49
1972	31.2	28.5	36	43	56.8	64.5	72.9	69	64.7	47.3	39.2	35.5	49.05
1973	31.4	30.5	42.9	49.2	55.4	69.5	72.4	71.9	62.1	52.3	43.9	36	51.46
1974	32	27.5	39.3	49.5	55.2	65.2	71.9	71.7	62.8	47.8	43.4	34.9	50.10
1975	34.1	30.5	35	43.8	59.7	66.5	73.3	66.4	61	54.2	47.3	33.5	50.44
1976	23.7	34.9	38.5	49.7	55.5	68.1	69.9	70.1	61.5	49.4	37.7	26.5	48.79
1977	19.5	29.4	42	46.9	58.8	64.5	72.2	71.6	65.1	50.6	43.8	32	49.70
1978	26.1	22.2	34.6	46	57.3	63.9	68	71.2	58.1	49.1	42.6	34.5	47.80
1979	29.3	20.3	41.8	45.3	59.3	62.8	72.6	71.4	62.2	52.7	47.1	37.9	50.23
1980	29.9	26.5	35.1	47.3	59.2	64.1	73.1	70.8	65.6	52.7	40.4	29	49.48
1981	19.6	32.6	36.6	48.8	58.3	68.4	74.5	70.8	62.8	49.4	43.7	32.9	49.87
1982	22.6	31.1	35.9	45	58.6	62.9	72	68.2	61.7	52	45.6	39.2	49.57
1983	32	30.3	41	47.7	54.4	66.8	73.4	71.5	65.5	53.2	44.9	31.5	51.02
1984	24.8	37.1	33.3	47.1	55.1	68.1	70.5	71.8	60.1	55.4	42.9	39.1	50.44
1985	24.4	31.3	40.5	50	58.7	63.1	71.4	69.3	64.2	53	46.7	30.4	50.25
1986	30	28.2	38.9	47.4	59.2	65.1	71.3	67.9	61.2	52.8	41.4	35.4	49.90
1987	29.3	29.3	39.9	49.4	57.9	68.4	73.2	68.3	62.9	49.3	44.1	34.7	50.56
1988	24.5	30.7	37.7	46	57.7	65.9	73.9	73.4	61	48.1	43.7	31.6	49.52
1989	32.7	30	37.7	45.8	57.8	68.6	71.4	71.3	63.8	53.5	42.1	23.9	49.88
1990	37.3	35.2	39.9	47.7	55.7	66.8	72.5	72.1	62.6	57.5	45.7	39.4	52.70
1991	31	35.5	41.8	51	62.4	68.6	72.9	72.9	62.2	54.7	44.7	36.7	52.87
1992	31.1	32.8	36.1	45	55.7	64.8	69.1	68.16	63.22	50.3	42.62	34.8	49.48
1993	33.2	26.7	35.5	48.3	59.6	67.6	73.9	71.7	63.9	50.8	42.4	34.1	50.64
1994	24.7	27.5	37.5	49.9	56.3	69.9	76.9	69	63	52.5	48.3	38.7	51.18
1995	36.6	29.7	40.9	46.5	56.1	67	74.4	72	62.6	56.4	41.2	30	51.12
1996	29.1	31.2	34.5	47.5	56.7	67.3	69.9	70.5	64.4	52.1	39.7	38.4	50.11
1997	30.1	36.5	37.7	46.9	54.7	65.5	72.1	70.2	62.8	52	41.3	35.4	50.43
1998	37.9	37.3	40.6	48.5	60.1	65.7	72.3	72.3	65.7	53.9	44.1	38.2	53.05
1999	32.2	34.3	39.3	48.4	58.7	69.2	76.3	71.7	65.7	51.9	47.4	37.5	52.72
2000	28.7	33.9	42.9	46.8	59.1	67.3	69.1	70.5	63.1	53.3	42.8	29.2	50.56
2001	29.4	32.4	36.6	49.3	59.4	70	69.2	74.3	63.7	54.2	48.2	40.5	52.27
2002	37.4	36.1	41.7	51.4	56.9	66.7	74.2	73.9	65.6	52.7	43.1	33	52.73
2003	26.2	28	38.5	46.4	55.2	65.9	72.9	74.6	65.8	52.1	47.3	36.2	50.76
2004	23.6	32.5	40	49.5	61.1	66.9	71.8	70.8	66.2	53.4	44.7	34.9	51.28
2005	28.7	32.1	35	49.1	54.1	69.4	74.1	76.2	68.4	55.8	47	33.2	51.93
2006	37.4	32.4	38.9	49.9	58.9	68.3	74.9	72.3	62.8	53.1	48.6	40.9	53.20
2007	35.8	28.1	38.1	46.2	59.6	67.3	72.4	71.9	65.7	61	42.4	34.4	51.91
2008	33.8	34.4	36.9	50.2	55.9	70.3	74.4	70.9	63.8	51.9	42.5	38.6	51.97
2009	26.1	34	38.1	50.1	58.2	64.1	70	73.1	62.5	52.6	48.8	34.4	51.00
2010	29.7	31.4	44.2	51.3	61.1	70.4	76.3	72.8	67.5	55.1	44.7	31.3	52.98
2011	27.1	32.5	39.2	49.9	60.4	68.3	75.4	72.1	67.3	54.9	48.9	40.4	53.03
2012	36	37.7	46.4	51.3	61.6	67.2	74	72.8	65	57.2	41.3	40	54.21
2013	33.7	32.4	37.8	48.6	57.9	68.1	75.9	70	62.8	55.9	42.6	35.8	51.79
2014	27.2	28.7	34.4	46.9	58.7	66.8	71.6	68.5	64.4	56	42	38	50.27
2015	27.4	19.6	33.3	47.7	60.8	66.4	73.6	73.5	68.4	52.6	47.4	46.5	51.43
2016	31.5	33.9	43.5	46.4	57	66.6	74.1	74.4	66.1	54.5	45.2	35.2	52.37
2017	34.6	37	35.3	51.2	56.8	66.7	71.9	69	65.7	59.1	44.2	31.9	51.95
2018	28.7	37.8	36.6	44.1	60.4	65.9	73.1	74.3	67.1	54.3	42.1	36.2	51.72
2019	30.1	32.3	37.1	49.9	57.2	66.9	75.1	71.2	64.6	56.1	40.2	35.5	51.35
2020	35.7	36.4	43	45.3	56	68.2	75.1	72.8	64.7	54.8	47.5	36.2	52.98
2021	31.1	31.3	40.4	48.7	57.1	68.5	72.6	73.8	67.4	59.7	43.1	41	52.89
2022	28.7	34.3	41.9	49.1	60.2	67	75	75	65.5	54.4	47.6	36.76	52.96
2023	40	36.9	40.4	51.9	57.4	64.9	74.8	70.6	66.2	56.2	42.4	41.1	53.57
2024	34.2	35.3	44										37.83
Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total
Average	29.81	31.18	38.00	47.43	57.21	66.38	72.22	70.72	63.48	53.37	43.51	34.57	50.64
Maximum	40	37.8	46.4	51.9	62.4	70.4	76.9	76.2	69	65	48.9	46.5	54.21
Minimum	19.5	19.6	31	42.1	50.2	61.3	66.8	65.9	58.1	47.3	37.7	23.9	47.51