Year Chico Average Max Lake Tahoe Average Max Jan Jul Jan Jul 1951 50.1 92.3 35.8 77.4 1952 50.9 94.6 31.3 75.6 1953 57.5 95.2 38.8 77.7 1954 53.0 93.5 37.8 77.3 1955 50.0 90.9 33.6 73.0 1956 52.7 92.7 37.6 74.1 1957 53.3 93.4 32.8 75.0 1958 53.1 93.2 39.0 73.9 1959 57.2 98.0 41.1 80.9 1960 53.1 97.3 35.0 80.7 1961 49.7 98.2 46.9 80.7 1962 55.7 94.8 38.1 77.5 1963 54.2 90.9 41.0 74.5 1964 52.6 93.7 37.6 77.5 1965 50.9 92.9 37.2 74.5 1966 55.0 90.6 37.7 76.5 1967 55.7 95.9 39.6 79.7 1968 53.2 93.8 38.2 78.1 1969 49.9 95.3 38.8 77.4 1970 56.3 95.8 41.9 79.1 1971 54.8 95.4 42.1 78.9 1972 50.5 94.6 38.8 78.3 1973 51.5 95.1 35.0 78.2 1974 54.3 90.8 34.3 76.2 1975 54.2 89.8 42.0 75.5 1976 57.8 92.8 41.4 76.9 1977 50.3 93.7 40.1 78.4 1978 56.2 93.3 37.8 78.9 1979 54.4 93.8 37.1 76.5 1980 54.6 92.8 41.2 75.9 1981 53.9 94.3 43.3 80.0 1982 51.7 91.2 37.4 74.1 1983 50.0 90.0 42.9 71.6 1984 55.8 97.2 43.5 79.9 1985 51.8 97.8 42.2 79.1 1986 57.0 93.4 46.7 75.1 1987 53.1 89.4 40.2 74.2 1988 55.8 99.0 41.1 81.5 1989 56.1 95.1 41.7 80.5 1990 56.2 96.5 44.2 80.0