| Hopland Research and Extension Center Headquarters | ||||||||||||||||
| Mean Maximum Temperature by Month | ||||||||||||||||
| Jan | Feb | Mar | April | May | Jun | Jul | Aug | Sept | Oct | Nov | Dec | MEAN | ||||
| 1952 | 63.80 | 52.70 | 58.25 | |||||||||||||
| 1953 | 58.60 | 62.30 | 61.80 | 68.40 | 69.90 | 78.40 | 93.90 | 84.50 | 88.40 | 76.10 | 61.30 | 56.70 | 71.69167 | |||
| 1954 | 52.30 | 64.20 | 58.80 | 71.00 | 77.90 | 79.80 | 92.30 | 83.40 | 83.50 | 75.30 | 63.10 | 52.20 | 71.15 | |||
| 1955 | 51.20 | 58.50 | 64.00 | 60.60 | 75.30 | 81.30 | 86.80 | 94.20 | 89.60 | 77.80 | 61.20 | 53.80 | 71.19167 | |||
| 1956 | 50.80 | 55.40 | 63.70 | 66.60 | 74.20 | 83.40 | 91.20 | 88.80 | 86.60 | 73.80 | 65.90 | 56.90 | 71.44167 | |||
| 1957 | 50.40 | 57.20 | 58.80 | 68.30 | 69.40 | 87.60 | 89.30 | 88.60 | 86.40 | 68.30 | 61.70 | 54.70 | 70.05833 | |||
| 1958 | 55.20 | 57.90 | 57.80 | 66.70 | 78.50 | 80.50 | 90.50 | 96.60 | 90.70 | 84.10 | 65.00 | 62.30 | 73.81667 | |||
| 1959 | 56.90 | 56.20 | 68.20 | 75.50 | 73.40 | 85.60 | 96.70 | 92.00 | 82.40 | 80.60 | 71.10 | 59.00 | 74.8 | |||
| 1960 | 51.30 | 59.20 | 64.50 | 65.50 | 70.80 | 90.20 | 96.00 | 93.00 | 90.60 | 76.40 | 59.90 | 55.70 | 72.75833 | |||
| 1961 | 57.00 | 58.10 | 58.50 | 70.50 | 68.60 | 88.40 | 94.60 | 92.20 | 86.40 | 78.40 | 63.70 | 54.20 | 72.55 | |||
| 1962 | 58.10 | 56.60 | 58.50 | 74.60 | 72.60 | 86.40 | 93.50 | 90.20 | 85.80 | 72.90 | 63.90 | 56.90 | 72.5 | |||
| 1963 | 55.30 | 64.40 | 60.40 | 58.80 | 71.80 | 82.30 | 87.50 | 89.60 | 87.70 | 74.60 | 60.30 | 56.10 | 70.73333 | |||
| 1964 | 52.60 | 64.70 | 61.70 | 69.30 | 72.00 | 80.50 | 91.30 | 92.30 | 86.40 | 81.70 | 58.00 | 53.70 | 72.01667 | |||
| 1965 | 54.10 | 62.00 | 64.40 | 64.60 | 75.80 | 78.50 | 90.70 | 89.40 | 82.90 | 83.00 | 59.70 | 50.90 | 71.33333 | |||
| 1966 | 53.50 | 56.00 | 62.90 | 75.60 | 79.40 | 84.40 | 88.10 | 93.20 | 86.80 | 80.60 | 62.30 | 54.00 | 73.06667 | |||
| 1967 | 55.30 | 64.00 | 58.90 | 54.80 | 77.40 | 81.40 | 94.80 | 97.50 | 91.10 | 77.60 | 66.20 | 52.50 | 72.625 | |||
| 1968 | 53.20 | 61.40 | 64.80 | 72.50 | 74.30 | 87.00 | 93.80 | 85.90 | 87.40 | 75.10 | 59.70 | 49.40 | 72.04167 | |||
| 1969 | 50.80 | 50.80 | 62.80 | 66.30 | 77.80 | 80.10 | 93.40 | 95.70 | 89.60 | 72.10 | 64.60 | 55.60 | 71.63333 | |||
| 1970 | 54.20 | 62.70 | 66.20 | 66.10 | 78.70 | 85.10 | 94.30 | 92.90 | 89.70 | 75.60 | 60.10 | 49.20 | 72.9 | |||
| 1971 | 54.80 | 61.20 | 59.90 | 64.70 | 71.60 | 80.90 | 93.00 | 93.60 | 87.90 | 75.90 | 62.10 | 49.30 | 71.24167 | |||
| 1972 | 52.90 | 58.90 | 67.20 | 66.80 | 78.30 | 86.10 | 92.00 | 92.40 | 82.80 | 70.60 | 58.70 | 48.40 | 71.25833 | |||
| 1973 | 51.20 | 58.40 | 58.50 | 72.70 | 82.30 | 88.10 | 92.00 | 91.60 | 85.00 | 75.50 | 56.30 | 53.20 | 72.06667 | |||
| 1974 | 51.00 | 57.50 | 59.90 | 66.50 | 76.70 | 86.00 | 90.10 | 92.80 | 92.80 | 88.10 | 61.80 | 53.90 | 73.09167 | |||
| 1975 | 56.00 | 56.40 | 58.30 | 61.40 | 79.00 | 86.50 | 89.90 | 89.50 | 90.40 | 71.30 | 59.30 | 54.30 | 71.025 | |||
| 1976 | 56.50 | 59.20 | 62.50 | 63.90 | 79.90 | 84.60 | 91.30 | 82.80 | 86.40 | 82.00 | 68.60 | 56.00 | 72.80833 | |||
| 1977 | 56.20 | 65.60 | 60.20 | 73.30 | 66.60 | 87.60 | 92.70 | 92.60 | 82.60 | 76.20 | 62.50 | 56.10 | 72.68333 | |||
| 1978 | 56.40 | 59.90 | 66.00 | 64.30 | 77.60 | 83.50 | 92.90 | 92.70 | 82.80 | 84.50 | 61.90 | 52.00 | 72.875 | |||
| 1979 | 52.50 | 55.60 | 62.10 | 66.50 | 77.60 | 88.00 | 91.10 | 88.90 | 89.90 | 74.20 | 59.20 | 55.70 | 71.775 | |||
| 1980 | 56.00 | 60.20 | 61.90 | 69.00 | 73.70 | 79.00 | 92.40 | 90.30 | 86.10 | 80.60 | 64.40 | 55.60 | 72.43333 | |||
| 1981 | 56.30 | 61.40 | 61.40 | 70.70 | 76.90 | 89.20 | 94.60 | 93.00 | 86.30 | 72.50 | 62.40 | 55.10 | 73.31667 | |||
| 1982 | 50.80 | 60.90 | 59.20 | 65.00 | 79.50 | 80.20 | 89.70 | 91.40 | 83.90 | 74.50 | 58.30 | 52.40 | 70.48333 | |||
| 1983 | 55.60 | 57.10 | 57.50 | 62.70 | 75.90 | 83.00 | 85.70 | 90.20 | 87.20 | 78.30 | 58.00 | 53.40 | 70.38333 | |||
| 1984 | 57.60 | 57.70 | 67.10 | 65.70 | 79.20 | 84.90 | 96.40 | 91.60 | 92.50 | 69.00 | 56.20 | 50.20 | 72.34167 | |||
| 1985 | 53.10 | 63.40 | 59.70 | 74.60 | 75.90 | 89.50 | 94.50 | 89.40 | 79.60 | 75.70 | 56.80 | 54.30 | 72.20833 | |||
| 1986 | 57.40 | 60.20 | 68.70 | 69.20 | 76.00 | 85.00 | 90.50 | 94.00 | 78.70 | 77.60 | 65.50 | 53.70 | 73.04167 | |||
| 1987 | 52.40 | 60.10 | 61.70 | 76.60 | 80.50 | 88.00 | 84.90 | 93.00 | 89.70 | 81.80 | 60.40 | 50.80 | 73.325 | |||
| 1988 | 53.40 | 66.50 | 69.40 | 69.50 | 73.20 | 82.20 | 96.00 | 92.50 | 92.20 | 82.50 | 59.20 | 54.60 | 74.26667 | |||
| 1989 | 54.50 | 55.80 | 60.60 | 73.70 | 75.40 | 84.30 | 90.60 | 89.40 | 84.30 | 74.80 | 64.80 | 55.50 | 71.975 | |||
| 1990 | 54.50 | 56.50 | 66.00 | 72.50 | 75.00 | 83.20 | 92.70 | 90.50 | 87.60 | 82.30 | 62.80 | 49.20 | 72.73333 | |||
| 1991 | 57.30 | 66.90 | 56.60 | 66.60 | 72.50 | 82.50 | 93.20 | 88.80 | 93.80 | 85.50 | 64.30 | 55.10 | 73.59167 | |||
| 1992 | 54.80 | 62.00 | 65.30 | 73.30 | 85.10 | 85.50 | 89.90 | 95.60 | 89.10 | 80.10 | 62.90 | 51.70 | 74.60833 | |||
| 1993 | 51.70 | 56.70 | 66.80 | 66.20 | 72.20 | 82.10 | 89.00 | 91.40 | 90.20 | 79.10 | 64.10 | 52.80 | 71.85833 | |||
| 1994 | 55.70 | 56.70 | 69.20 | 70.60 | 75.30 | 85.10 | 94.60 | 93.00 | 89.00 | 77.20 | 54.60 | 49.70 | 72.55833 | |||
| 1995 | 53.40 | 63.60 | 60.90 | 66.70 | 73.10 | 80.70 | 90.10 | 92.70 | 88.70 | 82.50 | 68.70 | 55.70 | 73.06667 | |||
| 1996 | 54.00 | 60.00 | 67.90 | 70.50 | 76.70 | 86.70 | 97.20 | 96.10 | 87.80 | 77.40 | 62.50 | 54.30 | 74.25833 | |||
| 1997 | 54.30 | 62.00 | 69.40 | 70.50 | 83.80 | 83.00 | 93.20 | 89.10 | 88.00 | 74.80 | 62.50 | 54.50 | 73.75833 | |||
| 1998 | 54.00 | 53.50 | 63.50 | 66.30 | 65.30 | 80.10 | 91.50 | 96.50 | 88.00 | 74.80 | 57.90 | 51.20 | 70.21667 | |||
| 1999 | 55.40 | 53.45 | 58.20 | 68.10 | 75.30 | 83.80 | 90.30 | 89.10 | 91.00 | 81.90 | 62.70 | 55.10 | 72.02917 | |||
| 2000 | 53.20 | 56.40 | 64.50 | 72.10 | 76.30 | 89.00 | 88.40 | 92.10 | 86.70 | 75.20 | 58.20 | 54.00 | 72.175 | |||
| 2001 | 52.70 | 55.90 | 68.60 | 66.70 | 87.80 | 86.60 | 91.60 | 92.90 | 88.90 | 82.90 | 61.90 | 52.90 | 74.11667 | |||
| 2002 | 52.90 | 62.30 | 64.70 | 70.30 | 77.00 | 88.10 | 95.50 | 92.60 | 91.60 | 80.90 | 65.80 | 54.90 | 74.71667 | |||
| 2003 | 58.00 | 60.90 | 67.40 | 61.30 | 76.70 | 87.50 | 96.50 | 91.10 | 92.70 | 84.90 | 57.00 | 52.90 | 73.90833 | |||
| 2004 | 53.40 | 57.30 | 74.60 | 72.80 | 78.50 | 86.70 | 93.30 | 92.40 | 91.00 | 75.10 | 60.20 | 54.00 | 74.10833 | |||
| 2005 | 53.20 | 61.50 | 67.10 | 67.30 | 74.30 | 78.30 | 97.00 | 95.10 | 86.70 | 77.70 | 62.50 | 53.70 | 72.86667 | |||
| 2006 | 54.10 | 62.40 | 54.50 | 63.90 | 79.90 | 89.20 | 99.10 | 92.60 | 90.80 | 78.10 | 60.20 | 52.30 | 73.09167 | |||
| 2007 | 54.50 | 57.10 | 71.40 | 71.30 | 81.50 | 87.10 | 92.60 | 94.00 | 85.20 | 71.80 | 65.00 | 51.50 | 73.6 | |||
| 2008 | 50.50 | 60.00 | 65.20 | 69.90 | 80.70 | 88.70 | 95.10 | 96.30 | 91.30 | 80.00 | 62.70 | 50.70 | 74.25833 | |||
| 2009 | 58.30 | 57.90 | ||||||||||||||
| MEAN | 54.23 | 59.49 | 63.22 | 68.20 | 76.08 | 84.49 | 92.32 | 91.67 | 87.70 | 77.71 | 61.83 | 53.64 | 72.54831 | |||