Hopland Research and Extension Center Headquarters
Mean Minimum Temperature by Month
	Jan	Feb	Mar	April	May	Jun	Jul	Aug	Sept	Oct	Nov	Dec	MEAN
1952											36.7	39.8	38.25
1953	41	35.1	36.3	40.3	41.1	45.1	48.7	47.6	48	39.5	42	33.5	41.52
1954	33.6	34.4	35.7	41.7	42.1	46.1	49.2	46.8	42.5	36.9	35.8	29.6	39.53
1955
1956
1957		38.9	38.6	39.9	45.4	49.7	50	47.5	46.6	42.1	35.2	34.2	42.55
1958	33.1	44.9	34.3	38.5	44.8	51.5	53.9	53.3	50	44.4	39.5	35.3	43.63
1959	35.5	34.1	36.7	40.6	40.2	47.9	49.7	51	46.4	36.5	32.7	30.8	40.18
1960	32	35.6	40.6	40.3	42.9	51.3	53.5	48.7	45.6	44.2	38.3	34.8	42.32
1961	34.1	38.2	38.1	40	43.6	51.6	51.1	52.5	45.7	41.8	35.3	33	42.08
1962	29.1	38.5	36.5	40.6	42.4	47	48.9	50	46.8	43.8	39.3	35.5	41.53
1963	28.4	44.4	36.4	39	46.5	47.7	48.1	49.5	48.3	44.4	37.9	31.7	41.86
1964	32.2	29.2	33.6	35.8	39.6	46.8	49.2	50.3	45.4	44.6	37.9	38.9	40.29
1965	36.6	32.7	37.4	42.3	42.9	48	51.2	54.3	45.9	45	41.9	31.2	42.45
1966	33	34.3	39	41.9	45.5	49.4	49.5	52.7	48.7	42	40.9	37.4	42.86
1967	34.2	34	35.6	35.6	43.9	49.5	54.3	54	52	44.2	41.3	30.6	42.43
1968	31.6	42.9	39.5	38.2	43.2	49.6	52.7	54.2	51.4	43.5	40.1	33.3	43.35
1969	34.1	36	35.2	38.6	44.8	50.9	51.8	51.9	50.2	43.1	35.8	39	42.62
1970	40.3	38	37.4	35	44.3	49.1	51.3	48.1	45	39.3	44.1	37	42.41
1971	34.6	34.2	36	37.8	43.2	47.4	53.2	54	48.1	39	36.4	30.6	41.21
1972	30.8	37.6	40.7	38.6	43.5	50	54.1	53.4	47.1	45.4	38.5	29.7	42.45
1973	34.1	40.6	35.8	38.9	45.8	51.4	52.7	50	48.4	42.8	42	40.3	43.57
1974	34.7	32	39.5	38.4	42.6	48.3	53.3	53.2	50.2	43.3	35.4	32.9	41.98
1975	30.8	38	39.1	35.3	43.9	48.7	52.1	51.4	49.3	42.7	34	33.8	41.59
1976	29.4	34.9	33.9	37.5	42.9	48	53.7	52.8	50.3	41.8	40.2	27.6	41.08
1977	30.1	35.8	34.2	39.5	41.4	52.4	52.3	54.4	50.6	44	38.9	38.3	42.66
1978	39.7	39.1	43.4	39.6	44.2	49.4	53.3	54.1	49.4	43.9	33.3	27.3	43.06
1979	32.5	35.9	40	40.7	46.1	47.9	53.3	52.4	50.6	47.3	38.2	34.4	43.28
1980	35.2	41.2	36.6	40.1	42.9	46.4	52.6	50.3	47.8	43.8	37	34	42.33
1981	37	37.8	38.6	40.1	45.8	53.1	51.2	52.2	50.4	41.5	43.1	40.5	44.28
1982	30.5	36.7	37	38.3	43.6	49.5	52	51.4	49.3	44	36.2	33.7	41.85
1983	35.5	41.7	41.8	39.4	44.6	49.5	51.5	55	52.3	46.6	39.7	40.9	44.88
1984	34.5	34.8	39.6	38	45.5	48.8	55.9	52	48.5	42.1	39.2	31	42.49
1985	30.7	34	35.6	42.9	43.1	51.7	54.2	49.8	48.7	42.5	34.6	32.7	41.71
1986	39.6	40.7	42.2	40.5	44.4	51.4	52.5	52.2	46.5	44.4	36.2	34.5	43.76
1987	33.5	35.4	38	41.1	48.5	51.4	50.4	50.9	48.1	49	40.9	38.2	43.78
1988	37.3	37.1	40.7	43.6	43.9	50.5	55.6	52.9	48.8	46.7	42.3	33.5	44.41
1989	31.6	32	41.8	43.8	44.7	50	51.4	51.4	48.7	43.6	36.7	31.2	42.24
1990	33.4	32.1	39	45.1	45.1	50.6	54.5	54.9	51.2	43.6	33.5	26.4	42.45
1991	31.4	39.1	37.5	39.9	44	47.5	54.7	51.9	51.3	47.4	38.5	32.5	42.98
1992	32.6	41.4	42.2	43.7	49.1	53	53.9	53.2	49.7	47.2	38.7	34.1	44.9
1993	35.2	36.8	44.1	41.3	47.4	50	52.5	52.2	48.1	46.6	34.6	33.5	43.53
1994	35.6	34	39.3	41.3	46	48.6	53.5	50.9	49.3	43.1	34.6	34.2	42.53
1995	44.7	41.7	40.5	40.7	46.9	50.5	54.6	52.5	50.4	43	41.4	41.4	45.69
1996	36.5	42	40.2	42.7	45.8	51.2	56.2	54.4	48.4	44.6	41.3	40.8	45.34
1997	39.2	36.6	40	42.1	48.3	51.3	53.6	54	50.8	43.2	44.4	34.6	44.84
1998	42.5	40.4	39.9	39.9	43.4	50.3	53	52.1	49.2	39.7	40	30.1	43.38
1999	33.7	35.3	36.8	38.7	43	48	49.5	52.3	49.4	43.8	43.3	31.8	42.13
2000	37.4	41.5	37.8	41.9	46.4	51.3	50.5	50.9	47.5	43.4	35.6	34.4	43.22
2001	30.4	34.2	40.5	37.4	47.7	50.8	52.6	52	47.5	46.9	42.6	38.6	43.43
2002	33.5	35.4	36.1	42.7	43.4	50.4	54	50.9	48	41.1	38.9	38.7	42.76
2003	41.4	34.4	39.6	39.5	44.9	50.7	56.2	53.1	50.8	44	37.5	38.5	44.22
2004	37.3	38.3	41	40.6	46.3	50.5	54.4	52.9	49.8	44.2	37.3	35.2	43.98
2005	36.3	39.8	40.6	38.5	47.1	49.9	56.5	52.7	47	43.7	38.7	39	44.15
2006	37	34	37.3	43.8	47.4	54	58.2	52.2	48.4	42.1	41	33.9	44.11
2007	28.5	38	39.2	40.7	45.1	50.2	54.8	53.3	48.9	43.6	37.9	32.5	42.7
2008	35.4	35.4	34.8	35.9	46.8	49.7	55.3	54.8	48.9	44	43.1	32.5	43.05
2009	33.3	37											35.15
MEAN	34.6	37.1	38.4	40	44.6	49.7	52.7	52	48.6	43.4	38.6	34.4	42.84