SAINT HELENA, CALIFORNIA

Monthly Extreme Maximum Temperature (Degrees Fahrenheit)

(047643)

File last updated on Jul 24, 2006
*** Note *** Provisional Data *** After Year/Month 200603
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1931 ----- z 75.00 i 85.00 96.00 98.00 103.00 114.00 110.00 95.00 93.00 85.00 60.00 114.00
1932 76.00 84.00 86.00 c 85.00 98.00 101.00 105.00 g 105.00 108.00 87.00 91.00 a 72.00 c 108.00
1933 62.00 70.00 80.00 87.00 101.00 a 97.00 107.00 105.00 101.00 104.00 87.00 64.00 107.00
1934 77.00 73.00 88.00 87.00 100.00 107.00 102.00 106.00 106.00 97.00 80.00 75.00 107.00
1935 71.00 75.00 80.00 86.00 99.00 101.00 105.00 107.00 104.00 88.00 77.00 71.00 107.00
1936 70.00 71.00 82.00 89.00 a 99.00 100.00 106.00 103.00 104.00 97.00 91.00 72.00 106.00
1937 57.00 69.00 78.00 86.00 91.00 106.00 a 103.00 109.00 101.00 94.00 83.00 77.00 109.00
1938 75.00 74.00 69.00 90.00 98.00 100.00 103.00 105.00 102.00 88.00 81.00 74.00 105.00
1939 71.00 75.00 86.00 90.00 100.00 106.00 108.00 108.00 108.00 96.00 83.00 79.00 108.00
1940 72.00 68.00 76.00 86.00 90.00 101.00 102.00 107.00 92.00 95.00 80.00 76.00 107.00
1941 70.00 68.00 81.00 82.00 96.00 100.00 102.00 97.00 102.00 93.00 85.00 69.00 102.00
1942 71.00 70.00 80.00 78.00 96.00 104.00 107.00 98.00 103.00 95.00 81.00 76.00 107.00
1943 73.00 79.00 75.00 81.00 101.00 104.00 105.00 103.00 107.00 96.00 80.00 76.00 107.00
1944 78.00 69.00 84.00 79.00 92.00 99.00 97.00 107.00 112.00 90.00 68.00 70.00 112.00
1945 66.00 70.00 82.00 93.00 86.00 104.00 106.00 103.00 100.00 94.00 86.00 66.00 106.00
1946 67.00 70.00 b 79.00 94.00 94.00 103.00 99.00 109.00 99.00 92.00 73.00 66.00 109.00
1947 67.00 80.00 81.00 95.00 99.00 104.00 103.00 101.00 104.00 97.00 72.00 69.00 104.00
1948 82.00 73.00 72.00 78.00 85.00 96.00 105.00 98.00 102.00 90.00 77.00 65.00 105.00
1949 58.00 66.00 72.00 89.00 94.00 98.00 103.00 99.00 107.00 93.00 90.00 70.00 107.00
1950 65.00 73.00 81.00 91.00 105.00 109.00 107.00 111.00 112.00 96.00 86.00 69.00 112.00
1951 64.00 70.00 82.00 91.00 100.00 92.00 106.00 106.00 107.00 92.00 83.00 70.00 107.00
1952 65.00 69.00 84.00 87.00 96.00 97.00 100.00 101.00 108.00 103.00 84.00 67.00 c 108.00
1953 73.00 73.00 82.00 84.00 a 86.00 97.00 100.00 100.00 107.00 94.00 76.00 74.00 j 107.00
1954 65.00 78.00 75.00 91.00 89.00 c 107.00 b 109.00 i 94.00 100.00 94.00 78.00 66.00 109.00
1955 66.00 70.00 b 84.00 78.00 97.00 99.00 103.00 g 107.00 c 113.00 93.00 92.00 65.00 113.00
1956 60.00 70.00 79.00 83.00 a 96.00 a 106.00 b 105.00 g 100.00 98.00 89.00 86.00 77.00 106.00
1957 62.00 b 75.00 77.00 91.00 91.00 b 104.00 b 100.00 102.00 109.00 79.00 a 77.00 70.00 109.00
1958 70.00 71.00 72.00 87.00 93.00 97.00 97.00 103.00 a 106.00 99.00 a 84.00 82.00 106.00
1959 68.00 70.00 o 80.00 c 91.00 94.00 k 105.00 a 111.00 104.00 b 98.00 95.00 f 84.00 79.00 111.00
1960 64.00 72.00 d 84.00 89.00 95.00 107.00 107.00 105.00 d 101.00 b 88.00 e 86.00 66.00 107.00
1961 67.00 e 75.00 80.00 g 89.00 82.00 107.00 j 110.00 c 103.00 99.00 101.00 d 82.00 70.00 110.00
1962 83.00 73.00 75.00 90.00 87.00 102.00 101.00 106.00 101.00 94.00 86.00 67.00 106.00
1963 70.00 75.00 75.00 77.00 92.00 96.00 102.00 103.00 103.00 97.00 74.00 65.00 103.00
1964 68.00 80.00 82.00 91.00 88.00 104.00 105.00 105.00 106.00 98.00 78.00 66.00 106.00
1965 65.00 74.00 82.00 91.00 90.00 93.00 100.00 98.00 95.00 101.00 78.00 61.00 101.00
1966 70.00 71.00 90.00 91.00 92.00 106.00 102.00 106.00 100.00 94.00 92.00 64.00 106.00
1967 71.00 78.00 72.00 68.00 96.00 96.00 102.00 104.00 101.00 90.00 91.00 83.00 104.00
1968 79.00 79.00 85.00 88.00 95.00 101.00 103.00 102.00 101.00 90.00 74.00 64.00 103.00
1969 61.00 63.00 83.00 83.00 96.00 93.00 102.00 108.00 103.00 90.00 85.00 68.00 108.00
1970 66.00 77.00 84.00 82.00 100.00 99.00 107.00 105.00 101.00 101.00 80.00 62.00 107.00
1971 73.00 84.00 78.00 83.00 84.00 101.00 101.00 104.00 111.00 96.00 80.00 65.00 111.00
1972 73.00 72.00 88.00 84.00 97.00 108.00 115.00 102.00 91.00 89.00 75.00 76.00 115.00
1973 68.00 73.00 71.00 88.00 100.00 107.00 107.00 98.00 96.00 89.00 68.00 66.00 107.00
1974 71.00 71.00 80.00 86.00 99.00 99.00 105.00 101.00 101.00 98.00 78.00 70.00 105.00
1975 69.00 75.00 78.00 78.00 97.00 99.00 110.00 104.00 102.00 88.00 78.00 77.00 110.00
1976 76.00 78.00 80.00 85.00 103.00 110.00 102.00 104.00 103.00 95.00 90.00 76.00 110.00
1977 70.00 80.00 76.00 88.00 95.00 106.00 109.00 104.00 101.00 90.00 80.00 75.00 109.00
1978 68.00 75.00 82.00 88.00 100.00 102.00 101.00 106.00 101.00 98.00 84.00 69.00 106.00
1979 64.00 70.00 a 79.00 79.00 94.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 94.00
1980 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 86.00 81.00 c 86.00
1981 ----- z 76.00 79.00 a 98.00 93.00 ----- z 103.00 108.00 94.00 94.00 82.00 67.00 b 108.00
1982 68.00 75.00 74.00 87.00 98.00 92.00 98.00 ----- z 101.00 91.00 77.00 65.00 101.00
1983 70.00 69.00 70.00 79.00 96.00 98.00 108.00 106.00 104.00 90.00 73.00 67.00 108.00
1984 78.00 b 69.00 83.00 88.00 104.00 101.00 107.00 104.00 ----- z 88.00 ----- z ----- z 107.00
1985 74.00 82.00 82.00 95.00 ----- z ----- z 105.00 98.00 97.00 100.00 84.00 61.00 105.00
1986 ----- z 78.00 ----- z 89.00 ----- z 99.00 100.00 98.00 92.00 90.00 83.00 70.00 100.00
1987 ----- z 75.00 80.00 91.00 102.00 ----- z ----- z ----- z 102.00 ----- z ----- z ----- z 102.00
1988 ----- z ----- z ----- z 90.00 98.00 98.00 ----- z 107.00 106.00 97.00 76.00 76.00 107.00
1989 70.00 73.00 74.00 96.00 93.00 105.00 105.00 100.00 96.00 90.00 80.00 74.00 105.00
1990 67.00 75.00 78.00 92.00 ----- z 103.00 107.00 106.00 100.00 94.00 81.00 71.00 107.00
1991 78.00 79.00 71.00 85.00 93.00 97.00 ----- z 97.00 102.00 a 103.00 83.00 72.00 103.00
1992 62.00 80.00 75.00 90.00 94.00 91.00 102.00 ----- z 99.00 98.00 77.00 63.00 102.00
1993 70.00 69.00 79.00 80.00 a 92.00 107.00 106.00 111.00 101.00 90.00 84.00 72.00 111.00
1994 73.00 66.00 80.00 86.00 92.00 103.00 99.00 104.00 100.00 89.00 82.00 63.00 104.00
1995 62.00 78.00 75.00 86.00 88.00 107.00 105.00 105.00 102.00 98.00 79.00 72.00 107.00
1996 77.00 80.00 87.00 94.00 98.00 101.00 107.00 110.00 97.00 103.00 81.00 69.00 110.00
1997 71.00 79.00 85.00 90.00 104.00 102.00 102.00 107.00 99.00 91.00 87.00 74.00 107.00
1998 64.00 66.00 79.00 91.00 ----- z 92.00 ----- z 106.00 98.00 85.00 66.00 76.00 106.00
1999 69.00 66.00 71.00 86.00 93.00 98.00 104.00 100.00 98.00 93.00 b 80.00 ----- z 104.00
2000 66.00 69.00 83.00 89.00 100.00 107.00 99.00 101.00 102.00 91.00 76.00 69.00 107.00
2001 73.00 74.00 84.00 85.00 100.00 100.00 103.00 101.00 97.00 99.00 79.00 69.00 103.00
2002 66.00 79.00 84.00 87.00 92.00 99.00 108.00 101.00 99.00 95.00 78.00 66.00 108.00
2003 74.00 69.00 80.00 76.00 94.00 101.00 101.00 98.00 102.00 94.00 a 72.00 66.00 102.00
2004 67.00 69.00 h 87.00 93.00 90.00 97.00 g 94.00 98.00 100.00 92.00 74.00 68.00 100.00
2005 ----- z 74.00 88.00 78.00 88.00 93.00 100.00 99.00 95.00 95.00 79.00 70.00 100.00
2006 68.00 79.00 67.00 85.00 95.00 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 95.00
Period of Record Statistics
MEAN 69.33 73.62 79.60 86.79 94.99 101.03 103.88 103.44 101.60 93.73 80.81 70.04 106.88
S.D. 5.41 4.65 5.14 5.52 5.06 4.63 3.97 3.83 4.68 4.71 5.71 5.32 2.79
SKEW 0.20 0.14 -0.34 -0.66 -0.36 -0.25 0.31 -0.15 0.22 -0.05 -0.18 0.38 0.36
MAX 83.00 84.00 90.00 98.00 105.00 110.00 115.00 111.00 113.00 104.00 92.00 83.00 115.00
MIN 57.00 63.00 67.00 68.00 82.00 91.00 94.00 94.00 91.00 79.00 66.00 60.00 101.00
NO YRS 69 71 72 75 70 68 65 70 72 71 72 70 49