SAINT HELENA, CALIFORNIA

Monthly Average 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 61.89 i 70.32 77.43 76.74 80.50 94.77 89.55 83.90 73.13 63.40 52.84 76.26
1932 55.58 59.86 70.07 c 70.50 77.65 85.00 91.83 g 91.23 89.73 79.52 75.00 a 53.25 c 73.40
1933 50.32 60.82 63.74 73.50 69.57 a 82.57 92.61 89.97 85.70 82.00 74.80 54.10 73.31
1934 58.32 59.89 73.32 74.80 81.16 82.07 89.13 89.26 88.20 75.29 64.63 58.61 74.56
1935 55.39 59.93 59.71 67.20 74.94 90.50 88.58 89.81 82.57 75.29 65.13 59.19 72.35
1936 58.94 58.24 68.10 70.07 a 76.87 82.37 89.90 91.68 88.70 81.42 72.10 58.65 74.75
1937 46.32 56.64 62.39 66.83 79.90 83.72 a 88.65 90.13 85.63 79.42 67.63 62.45 72.48
1938 54.48 56.57 58.32 67.83 79.68 85.83 90.29 90.29 88.00 74.23 69.13 60.68 72.94
1939 59.48 60.07 64.90 78.50 80.58 88.00 93.03 91.10 90.50 82.16 74.87 61.97 77.10
1940 57.87 61.10 67.84 72.43 80.48 87.70 89.61 88.19 82.23 78.61 65.37 61.65 74.42
1941 58.16 60.39 68.55 68.33 76.00 83.37 90.26 86.74 87.03 76.19 66.13 56.52 73.14
1942 56.81 60.32 66.65 67.20 73.94 87.17 90.48 88.87 85.00 78.55 65.13 55.97 73.01
1943 60.03 64.07 65.06 71.57 82.03 81.67 89.26 89.29 89.57 76.94 70.07 60.16 74.98
1944 57.55 59.24 70.06 67.00 78.26 80.57 86.74 90.94 91.50 78.32 60.67 60.81 73.47
1945 56.61 63.36 62.10 76.40 72.52 88.70 92.97 89.71 88.83 75.65 62.27 56.23 73.78
1946 58.29 57.92 b 64.13 73.47 77.10 84.07 90.32 89.19 88.07 76.10 62.67 55.77 73.09
1947 55.84 62.11 65.32 76.53 81.81 84.03 88.32 87.48 90.80 73.06 63.13 57.42 73.82
1948 63.65 58.66 61.45 62.67 73.00 82.10 87.77 87.77 86.80 76.32 66.07 51.26 71.46
1949 50.52 54.68 60.52 77.00 76.19 87.67 89.68 86.97 87.43 77.84 71.57 56.39 73.04
1950 50.42 61.43 63.55 75.60 79.74 83.47 91.55 93.26 86.53 75.45 67.73 57.06 73.82
1951 54.45 59.57 67.87 69.10 77.87 82.67 89.16 87.03 85.67 75.48 62.97 54.65 72.21
1952 51.29 58.90 61.39 71.50 81.71 78.70 90.00 90.61 89.13 78.84 65.73 54.57 c 72.70
1953 59.87 65.14 65.68 69.52 a 72.06 81.00 92.32 85.52 85.60 76.97 62.63 63.19 j 74.21
1954 55.03 62.96 60.06 72.50 79.57 c 84.54 b 92.82 i 83.03 84.40 77.16 63.37 53.39 70.55
1955 53.74 61.04 b 67.84 64.73 79.77 83.57 87.42 g 89.75 c 89.43 79.71 65.77 56.58 71.99
1956 54.29 59.17 67.42 69.97 a 75.53 a 86.39 b 88.42 g 87.16 86.40 74.74 72.50 63.61 72.47
1957 54.55 b 60.39 64.32 72.50 72.03 b 88.43 b 89.45 88.55 85.30 70.73 a 64.23 57.45 72.33
1958 58.19 60.11 59.94 72.80 78.42 81.00 86.03 91.53 a 91.60 82.90 a 71.20 67.65 75.11
1959 59.19 58.85 o 71.39 c 79.10 76.75 k 90.31 a 93.39 89.72 b 83.93 83.12 f 72.67 63.06 78.09
1960 54.90 61.92 d 65.97 70.87 76.39 88.27 91.87 90.15 d 87.29 b 75.31 e 62.00 56.19 73.43
1961 55.23 e 62.86 63.33 g 73.43 72.35 88.15 j 94.54 c 90.48 85.97 80.30 d 66.17 55.32 73.66
1962 60.13 57.50 61.90 78.10 76.19 85.40 88.94 89.23 84.20 74.39 67.57 57.32 73.41
1963 56.23 67.04 63.35 63.30 73.00 82.50 86.90 89.06 88.57 74.58 62.20 53.84 71.71
1964 55.32 67.10 65.00 73.20 74.58 81.63 90.29 90.16 86.30 82.65 60.93 58.26 73.79
1965 55.77 63.79 65.16 67.53 78.32 78.37 87.68 88.23 81.30 83.90 63.90 51.84 72.15
1966 57.97 59.00 65.74 77.77 77.94 87.50 86.35 91.84 86.07 81.77 63.60 55.68 74.27
1967 59.03 64.71 61.45 57.73 78.74 79.00 89.81 92.26 87.70 81.06 69.27 58.32 73.26
1968 56.52 64.00 67.90 75.80 76.81 87.67 89.29 85.61 86.67 76.39 62.67 53.61 73.58
1969 52.03 54.39 66.74 69.80 79.65 78.57 89.65 94.94 87.90 74.13 69.93 59.35 73.09
1970 57.61 65.64 68.71 70.57 81.81 82.97 90.23 88.00 90.37 74.39 64.37 53.35 74.00
1971 57.55 62.86 63.48 68.67 72.48 84.03 89.32 90.26 88.03 75.68 66.10 54.10 72.71
1972 54.87 61.31 70.94 70.53 79.13 86.57 90.77 88.71 82.00 70.35 59.90 51.94 72.25
1973 54.84 60.14 61.35 74.23 81.19 89.47 90.13 87.58 83.80 77.42 58.67 57.16 73.00
1974 55.65 60.43 62.19 69.40 78.81 86.40 89.35 88.29 87.33 79.42 65.83 56.52 73.30
1975 57.61 58.86 61.00 63.90 80.68 83.37 86.48 86.55 85.40 71.90 62.63 60.77 71.60
1976 63.45 61.83 66.23 69.53 83.45 87.50 89.03 84.77 83.43 81.13 70.70 65.84 75.57
1977 56.71 66.29 64.26 76.63 71.94 86.10 91.03 89.65 82.17 77.55 68.93 63.77 74.59
1978 57.97 61.07 68.19 67.10 81.71 84.70 90.55 88.48 85.37 82.23 65.73 57.68 74.23
1979 56.52 59.70 a 65.68 70.53 80.16 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 66.52
1980 ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z ----- z 69.90 62.79 c 66.34
1981 ----- z 63.00 63.33 a 75.57 81.32 ----- z 89.87 89.77 86.37 74.19 65.70 58.59 b 74.77
1982 55.00 64.18 61.84 69.93 81.35 79.87 87.65 ----- z 85.83 77.65 62.40 58.77 71.32
1983 57.19 61.46 62.52 67.43 79.87 86.37 88.42 89.74 87.80 79.90 61.43 57.68 73.32
1984 60.41 b 60.69 70.87 71.10 85.10 87.17 92.45 90.13 ----- z 72.90 ----- z ----- z 76.76
1985 55.55 67.86 62.19 76.70 ----- z ----- z 92.19 86.55 78.63 76.35 60.63 53.03 70.97
1986 ----- z 63.57 ----- z 72.50 ----- z 85.13 87.87 88.26 77.70 76.68 71.20 58.10 75.67
1987 ----- z 62.32 64.29 79.53 82.77 ----- z ----- z ----- z 87.07 ----- z ----- z ----- z 75.20
1988 ----- z ----- z ----- z 71.10 78.39 83.23 ----- z 88.71 87.27 77.90 61.10 59.68 75.92
1989 58.13 57.00 62.19 75.60 78.35 82.70 91.94 87.06 80.90 74.61 68.30 58.81 72.97
1990 57.32 57.75 66.61 76.33 ----- z 86.67 90.03 88.35 87.83 82.81 68.80 57.26 74.52
1991 60.39 68.25 58.32 69.97 76.00 82.90 ----- z 86.29 88.00 a 82.65 69.20 59.13 72.83
1992 56.00 64.31 65.39 75.77 84.58 82.73 89.71 ----- z 87.93 79.87 67.93 53.68 73.45
1993 55.42 58.39 67.77 69.76 a 75.52 86.93 89.87 91.16 87.73 77.61 67.17 56.10 73.62
1994 60.48 58.29 69.77 73.10 76.97 86.70 85.58 91.10 85.80 77.19 58.47 54.10 73.13
1995 55.65 64.07 61.84 70.70 72.77 83.20 89.81 93.45 86.77 82.58 72.27 59.61 74.39
1996 57.94 62.14 68.10 72.00 78.52 87.20 95.52 94.16 85.77 77.74 66.87 59.35 75.44
1997 57.52 65.21 71.35 74.67 86.06 87.87 90.16 88.94 89.20 76.97 65.60 59.84 76.12
1998 55.97 55.25 66.65 71.77 ----- z 77.37 ----- z 90.03 83.40 75.55 59.53 56.84 69.23
1999 57.74 58.04 60.52 69.53 75.32 82.17 85.29 84.39 84.40 79.72 b 65.27 ----- z 72.94
2000 58.35 60.28 69.16 74.83 78.55 86.47 85.90 88.68 85.90 74.19 61.37 61.68 73.78
2001 59.23 59.79 70.77 70.17 88.13 87.43 86.48 88.42 84.47 80.16 65.30 55.61 74.66
2002 56.94 65.54 67.10 71.33 77.65 85.77 88.29 87.39 87.00 77.26 68.73 57.39 74.20
2003 62.29 62.82 68.97 63.97 77.90 85.47 91.94 86.58 88.33 82.87 a 60.03 55.71 73.91
2004 56.39 60.90 h 75.74 74.47 78.74 86.78 g 85.03 88.81 87.13 72.26 63.03 57.35 73.90
2005 ----- z 62.00 67.74 70.27 75.68 80.37 90.90 88.87 82.30 76.97 67.40 58.71 74.65
2006 58.03 65.18 57.32 65.80 79.19 ----- z ----- z ----- z ----- z ----- z ----- z ----- z 65.11
Period of Record Statistics
MEAN 56.71 61.27 65.38 71.45 78.13 84.43 89.71 89.08 86.27 77.51 65.93 57.61 73.59
S.D. 2.96 3.10 3.84 4.25 3.64 3.08 2.28 2.19 2.76 3.23 4.06 3.37 1.14
SKEW -0.60 0.12 0.16 -0.42 0.08 -0.23 0.16 0.01 -0.68 0.07 0.32 0.50 0.66
MAX 63.65 68.25 75.74 79.53 88.13 90.50 95.52 94.94 91.60 83.90 75.00 67.65 77.10
MIN 46.32 54.39 57.32 57.73 69.57 77.37 85.03 83.03 77.70 70.35 58.47 51.26 71.46
NO YRS 69 71 72 75 70 68 65 70 72 71 72 70 51